578 lines
15 KiB
Plaintext
578 lines
15 KiB
Plaintext
<ul class="nav nav-tabs">
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<li class="active"><a data-toggle="tab" href="#home">评估结果</a></li>
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<li><a data-toggle="tab" href="#menu1">技术规范</a></li>
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<li><a data-toggle="tab" href="#menu2">数据源</a></li>
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</ul>
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<div class="tab-content">
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<div id="home" class="tab-pane fade in active">
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<div class="text_cell_render rendered_html" tabindex="-1">
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<h2 class="text-center">表1 草地退化和恢复分类面积及比例统计表</h2>
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<table>
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<tbody>
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<tr>
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<th rowspan="2">区域</th>
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<th rowspan="2">时段</th>
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<th colspan="2">退化草地好转</th>
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<th colspan="2">无退化</th>
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<th colspan="2">轻度退化</th>
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<th colspan="2">中度退化</th>
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<th colspan="2">重度退化</th>
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<th colspan="2">退化草地总面积</th>
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</tr>
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<tr>
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<td>面积</td>
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<td>比例</td>
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<td>面积</td>
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<td>比例</td>
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<td>面积</td>
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<td>比例</td>
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<td>面积</td>
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<td>比例</td>
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<td>面积</td>
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<td>比例</td>
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<td>面积</td>
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<td>比例</td>
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</tr>
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<tr>
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<td rowspan="3">评价单元1</td>
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<td>背景年~基准年</td>
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<td>-</td>
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</tr>
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<tr>
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<td>基准年~评估年</td>
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<td>-</td>
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<td>-</td>
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<td>-</td>
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<td>-</td>
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<td>-</td>
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</tr>
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<tr>
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<td>两时段差值</td>
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<td>-</td>
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<td>-</td>
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<td>-</td>
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<td>-</td>
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</tr>
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<tr>
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<td rowspan="3">评价单元2</td>
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<td>背景年~基准年</td>
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<td>-</td>
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<td>-</td>
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<td>-</td>
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<td>-</td>
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<td>-</td>
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</tr>
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<tr>
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<td>基准年~评估年</td>
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<td>-</td>
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<td>-</td>
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</tr>
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<tr>
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<td>两时段差值</td>
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<td>-</td>
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</tr>
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</tbody>
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</table>
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<h2 class="text-center">表2 草地退化状况变化指数统计表</h2>
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<table>
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<tbody>
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<tr>
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<th>区域</th>
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<th>背景年~基准年</th>
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<th>基准年~评估年</th>
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<th>两个时段比较</th>
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</tr>
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<tr>
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<td>评价单元1</td>
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<td>-</td>
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<td>-</td>
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<td>-</td>
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</tr>
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<tr>
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<td>评价单元2</td>
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<td>-</td>
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<td>-</td>
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<td>-</td>
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</tr>
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</tbody>
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</table>
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</div>
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</div>
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<div id="menu1" class="tab-pane fade">
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<div class="text_cell_render rendered_html" tabindex="-1">
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<h2 class="text-center">表1 草地退化遥感解译分类系统和分级指标</h2>
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<table border="1">
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<tbody>
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<tr>
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<td colspan="2">
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一级类型
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</td>
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<td colspan="3">二级类型</td>
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</tr>
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<tr>
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<td>编号</td>
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<td>名称</td>
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<td>编号</td>
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<td>名称</td>
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<td>含义</td>
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</tr>
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<tr>
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<td>3000</td>
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<td>无退化动态草地</td>
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<td>-</td>
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<td>-</td>
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<td>-</td>
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</tr>
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<tr>
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<td>3010</td>
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<td>破碎化退化草地</td>
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<td>-</td>
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<td>-</td>
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<td>通过两期图像比较，根据草地破碎化斑块数量或破碎化指数（（斑块数量×面积）/总面积）的相对百分数的增加幅度判定。</td>
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</tr>
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<tr>
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<td>-</td>
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<td>-</td>
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<td>3011</td>
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<td>轻度破碎化退化草地</td>
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<td>两期图像相比，草地破碎化斑块数量或破碎化指数（（斑块数量×面积）/总面积）的相对百分数增加10-20%。</td>
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</tr>
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<tr>
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<td>-</td>
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<td>-</td>
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<td>3012</td>
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<td>中度破碎化退化草地</td>
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<td>两期图像相比，草地破碎化斑块数量或破碎化指数（（斑块数量×面积）/总面积）的相对百分数增加20-50%。</td>
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</tr>
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<tr>
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<td>-</td>
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<td>-</td>
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<td>3013</td>
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<td>重度破碎化退化草地</td>
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<td>两期图像相比，草地破碎化斑块数量或破碎化指数（（斑块数量×面积）/总面积）的相对百分数增加50%以上。</td>
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</tr>
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<tr>
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<td>3020</td>
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<td>覆盖度下降退化草地</td>
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<td>-</td>
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<td>-</td>
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<td>两期图像相比，草地总覆盖度相对百分比减少。</td>
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</tr>
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<tr>
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<td>-</td>
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<td>-</td>
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<td>3021</td>
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<td>覆盖度轻度下降草地</td>
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<td>两期图像相比，总覆盖度相对百分比减少率为10-20%。</td>
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</tr>
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<tr>
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<td>-</td>
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<td>-</td>
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<td>3022</td>
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<td>覆盖度中度下降草地</td>
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<td>两期图像相比，总覆盖度相对百分比减少率为20-30%。</td>
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</tr>
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<tr>
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<td>-</td>
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<td>-</td>
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<td>3023</td>
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<td>覆盖度重度下降草地</td>
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<td>两期图像相比，总覆盖度相对百分比减少率为30%以上。</td>
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</tr>
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<tr>
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<td>-</td>
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<td>破 碎 化/覆盖度下降退化草地</td>
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<td>-</td>
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<td>-</td>
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<td>属于破碎化和覆盖度下降两个退化过程同时发生的类型。</td>
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</tr>
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<tr>
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<td>-</td>
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<td>-</td>
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<td>30111</td>
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<td>轻度破碎化、轻度覆盖度下降退化草地</td>
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<td>-</td>
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</tr>
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<tr>
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<td>-</td>
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<td>-</td>
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<td>30112</td>
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<td>轻度破碎化、中度覆盖度下降退化草地</td>
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<td>-</td>
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</tr>
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<tr>
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<td>-</td>
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<td>-</td>
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<td>30113</td>
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<td>轻度破碎化、重度覆盖度下降退化草地</td>
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<td>-</td>
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</tr>
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<tr>
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<td>-</td>
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<td>-</td>
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<td>30121</td>
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<td>中度破碎化、轻度覆盖度下降退化草地</td>
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<td>-</td>
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</tr>
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<tr>
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<td>-</td>
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<td>-</td>
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<td>30122</td>
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<td>中度破碎化、中度覆盖度下降退化草地</td>
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<td>-</td>
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</tr>
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<tr>
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<td>-</td>
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<td>-</td>
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<td>30123</td>
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<td>中度破碎化、重度覆盖度下降退化草地</td>
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<td>-</td>
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</tr>
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<tr>
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<td>-</td>
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<td>-</td>
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<td>30131</td>
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<td>重度破碎化、轻度覆盖度下降退化草地</td>
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<td>-</td>
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</tr>
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<tr>
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<td>-</td>
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<td>-</td>
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<td>30132</td>
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<td>重度破碎化、中度覆盖度下降退化草地</td>
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<td>-</td>
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</tr>
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<tr>
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<td>-</td>
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<td>-</td>
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<td>30133</td>
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<td>重度破碎化、重度覆盖度下降退化草地</td>
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<td>-</td>
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</tr>
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<tr>
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<td>3040</td>
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<td>沼泽化草甸趋干化</td>
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<td>-</td>
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<td>-</td>
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<td>两期图像相比，图像上反映出的沼泽化草甸湿度降低幅度、或沼泽化草甸因干化而面积减少的幅度判断。</td>
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</tr>
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<tr>
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<td>-</td>
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<td>-</td>
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<td>3041</td>
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<td>轻度沼泽化草甸趋干化</td>
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<td>草地湿度降低幅度、或沼泽化草甸因干化而面积减少的幅度10-20%。</td>
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</tr>
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<tr>
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<td>-</td>
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<td>-</td>
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<td>3042</td>
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<td>中度沼泽化草甸趋干化</td>
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<td>草地湿度降低幅度、或沼泽化草甸因干化而面积减少的幅度20-40%。</td>
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</tr>
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<tr>
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<td>-</td>
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<td>-</td>
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<td>3043</td>
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<td>重度沼泽化草甸趋干化</td>
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<td>草地湿度降低幅度、或沼泽化草甸因干化而面积减少的幅度40%以上。</td>
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</tr>
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<tr>
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<td>3050</td>
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<td>沙化/盐化退化</td>
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<td>-</td>
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<td>-</td>
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<td>两期图像相比，裸沙或盐碱化面积占草地面积的百分比增加。</td>
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</tr>
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<tr>
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<td>-</td>
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<td>-</td>
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<td>3051</td>
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<td>轻度沙化/盐化退化</td>
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<td>两期图像相比，裸沙或盐碱化面积占草地面积的百分比增加10-15%。</td>
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</tr>
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<tr>
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<td>-</td>
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<td>-</td>
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<td>3052</td>
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<td>中度沙化/盐化退化</td>
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<td>两期图像相比，裸沙或盐碱化面积占草地面积的百分比增加15-40%。</td>
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</tr>
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<tr>
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<td>-</td>
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<td>-</td>
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<td>3053</td>
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<td>重度沙化/盐化退化</td>
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<td>两期图像相比，裸沙或盐碱化面积占草地面积的百分比增加40%以上。</td>
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</tr>
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<tr>
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<td>3090</td>
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<td>草地覆盖度增加、破碎化指数降低</td>
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<td>-</td>
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<td>-</td>
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<td>-</td>
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</tr>
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<tr>
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<td>6410</td>
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<td>沼泽变干</td>
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<td>-</td>
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<td>-</td>
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<td>-</td>
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</tr>
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<tr>
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<td>-</td>
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<td>-</td>
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<td>6411</td>
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<td>沼泽轻度变干</td>
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<td>沼泽面积或沼泽干旱化程度（影像上反映的湿度饱和程度）减少10-20%。</td>
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</tr>
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<tr>
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<td>-</td>
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<td>-</td>
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<td>6412</td>
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<td>沼泽中度变干</td>
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<td>沼泽面积或沼泽干旱化程度（影像上反映的湿度饱和程度）减少20-50%。</td>
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</tr>
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<tr>
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<td>-</td>
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<td>-</td>
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<td>6413</td>
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<td>沼泽重度变干</td>
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<td>沼泽面积或沼泽干旱化程度（影像上反映的湿度饱和程度）减少50%以上。</td>
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</tr>
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<tr>
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<td>6420</td>
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<td>沼泽变好</td>
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<td>-</td>
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<td>-</td>
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<td>沼泽面积或沼泽化程度（影像上反映的湿度饱和程度）增加。</td>
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</tr>
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</tbody>
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</table>
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<h2 class="text-center">表2 退化草地变化态势分类体系</h2>
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<table border="1">
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<tbody>
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<tr>
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<td>编号</td>
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<td>名称</td>
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<td>含义</td>
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</tr>
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<tr>
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<td>1</td>
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<td>退化发生</td>
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<td>原健康草地发生新的退化，退化类型包括本底评估报告中草地退化分类系统中的任何一种，如草地退化、覆盖度下降、破碎化/覆盖度下降双重退化、沼泽化草甸趋干化、沙化/盐化退化、沼泽变干。</td>
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</tr>
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<tr>
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<td>2</td>
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<td>退化加剧</td>
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<td>原退化草地进一步发生退化，退化类型包括本底评估报告中草地退化分类系统中的任何一种，如草地退化、覆盖度下降、破碎化/覆盖度下降双重退化、沼泽化草甸趋干化、沙化/盐化退化、沼泽变干。</td>
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</tr>
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<tr>
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<td>3</td>
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<td>退化状态不变</td>
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<td>原退化草地没有发生新的退化，草地状况维持原状。</td>
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</tr>
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<tr>
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<td>4</td>
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<td>轻微好转</td>
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<td>原退化草地没有发生新的退化，草地状况有所好转，表现为覆盖度有所增加、破碎化减轻或沼泽化草甸变湿。</td>
|
||
</tr>
|
||
<tr>
|
||
<td>5</td>
|
||
<td>明显好转</td>
|
||
<td>原退化草地没有发生新的退化，草地状况明显好转，表现为草地覆盖度明显增高、破碎化明显减轻或沼泽化草甸明显变湿。</td>
|
||
</tr>
|
||
<tr>
|
||
<td>6</td>
|
||
<td>沼泽好转</td>
|
||
<td>沼泽没有发生新的退化，沼泽状况明显好转，表现为沼泽水分条件好转，植被覆盖度明显增高、破碎化减轻等。</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<h2 class="text-center">表3 草地退化状况变化指数计算方法</h2>
|
||
<p><img src="/images/ei/GDCI.PNG" alt="GDCI">
|
||
式中:</p>
|
||
<ul>
|
||
<li>GDCI--草地退化状况变化指数（无量纲）,大于0表示草地恢复，小于0表示退化;</li>
|
||
<li>k--草地退化类型;</li>
|
||
<li>A<sub>k</sub>--第k类草地退化类型的专类面积（km<sup>2</sup>）</li>
|
||
<li>A--被评价区总面积;</li>
|
||
<li>D<sub>a</sub>--转类前的草地退化级别(无量纲)</li>
|
||
<li>D<sub>b</sub>--转类后的草地退化级别(无量纲)</li>
|
||
</ul>
|
||
<h2 class="text-center">表4 草地退化类型与级别</h2>
|
||
<table border="1">
|
||
<tbody>
|
||
<tr>
|
||
<th>草地退化类型</th>
|
||
<th>好转</th>
|
||
<th>未退化</th>
|
||
<th>轻度退化</th>
|
||
<th>中度退化</th>
|
||
<th>重度退化</th>
|
||
</tr>
|
||
<tr>
|
||
<td>退化级别(D)</td>
|
||
<td>1</td>
|
||
<td>2</td>
|
||
<td>3</td>
|
||
<td>4</td>
|
||
<td>5</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<h2 class="text-center">表5 草地退化和恢复状况评价表</h2>
|
||
<table>
|
||
<tbody>
|
||
<tr>
|
||
<th>类别</th>
|
||
<th colspan="6">
|
||
<div align="center">判别等级</div>
|
||
</th>
|
||
</tr>
|
||
<tr>
|
||
<td>草地退化和恢复状况</td>
|
||
<td>好转面积变化比例</td>
|
||
<td>无退化面积变化比例</td>
|
||
<td>轻度退化面积变化比例</td>
|
||
<td>中度退化面积变化比例</td>
|
||
<td>重度退化面积变化比例</td>
|
||
<td>退化草地总面积变化比例</td>
|
||
</tr>
|
||
<tr>
|
||
<td>退化趋势没有得到遏制</td>
|
||
<td>不变或减少</td>
|
||
<td>不变或减少</td>
|
||
<td>不变或增加</td>
|
||
<td>不变或增加</td>
|
||
<td>不变或增加</td>
|
||
<td>增加</td>
|
||
</tr>
|
||
<tr>
|
||
<td>退化趋势得到初步遏制，局部好转</td>
|
||
<td>不变或增加</td>
|
||
<td>不变或增加</td>
|
||
<td>不变或减少</td>
|
||
<td>不变或减少</td>
|
||
<td>不变或减少</td>
|
||
<td>减少</td>
|
||
</tr>
|
||
<tr>
|
||
<td>退化趋势明显遏制，初步好转</td>
|
||
<td>增加</td>
|
||
<td>增加</td>
|
||
<td>减少</td>
|
||
<td>减少</td>
|
||
<td>减少</td>
|
||
<td>明显减少</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
<h2 class="text-center">表6 基于草地退化状况变化的生态系统质量变化评价</h2>
|
||
<table>
|
||
<tbody>
|
||
<tr>
|
||
<th>类别</th>
|
||
<th colspan="9">
|
||
<div align="center">判别等级</div>
|
||
</th>
|
||
</tr>
|
||
<tr>
|
||
<td>GDCI</td>
|
||
<td>< -5</td>
|
||
<td>-5~-2.5</td>
|
||
<td>-2.5~-1</td>
|
||
<td>-1~-0.01</td>
|
||
<td>-0.01~0.01</td>
|
||
<td>0.01~1</td>
|
||
<td>1~2.5</td>
|
||
<td>2.5~5</td>
|
||
<td>≥5</td>
|
||
</tr>
|
||
<tr>
|
||
<td>变化程度</td>
|
||
<td>显著转差</td>
|
||
<td>明显转差</td>
|
||
<td>较明显转差</td>
|
||
<td>微弱转差</td>
|
||
<td>基本不变</td>
|
||
<td>微弱转好</td>
|
||
<td>较明显转好</td>
|
||
<td>明显转好</td>
|
||
<td>显著转好</td>
|
||
</tr>
|
||
<tr>
|
||
<td>归一化值</td>
|
||
<td>1</td>
|
||
<td>2</td>
|
||
<td>3</td>
|
||
<td>4</td>
|
||
<td>5</td>
|
||
<td>6</td>
|
||
<td>7</td>
|
||
<td>8</td>
|
||
<td>9</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
</div>
|
||
</div>
|
||
<div id="menu2" class="tab-pane fade">
|
||
<h4>数据源</h4>
|
||
</div>
|
||
</div> |