373 lines
9.5 KiB
Plaintext
373 lines
9.5 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">1.土壤风蚀模数及其变化统计表</h2>
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<table width="90%">
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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 colspan="2">背景年~基准年</th>
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<th colspan="2">基准年~评估年</th>
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<th colspan="2">两时段平均值</th>
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</tr>
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<tr>
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<th>平均值</th>
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<th>倾斜率</th>
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<th>平均值</th>
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<th>倾斜率</th>
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<th>差值</th>
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<th>变化率</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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<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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<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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<h2 class="text-center">2.生态系统防风固沙量及其变化统计表</h2>
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<table width="90%">
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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 colspan="2">背景年~基准年</th>
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<th colspan="2">基准年~评估年</th>
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<th colspan="2">两时段平均值</th>
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</tr>
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<tr>
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<th>平均值</th>
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<th>倾斜率</th>
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<th>平均值</th>
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<th>倾斜率</th>
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<th>差值</th>
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<th>变化率</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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<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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<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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<h2 class="text-center">3.生态系统防风固沙服务功能保有率及其变化统计表</h2>
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<table width="90%">
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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 colspan="2">背景年~基准年</th>
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<th colspan="2">基准年~评估年</th>
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<th colspan="2">两时段平均值</th>
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</tr>
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<tr>
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<th>平均值</th>
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<th>倾斜率</th>
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<th>平均值</th>
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<th>倾斜率</th>
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<th>差值</th>
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<th>变化率</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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<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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<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">1.生态系统防风固沙服务功能变化评价</h2>
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<p></p>
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<p></p>
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<p></p>
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<p></p>
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<p></p>
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<p></p>
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<table width="90%">
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<tbody>
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<tr>
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<th>类别</th>
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<th colspan="9">
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<div align="center">判别等级</div>
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</th>
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</tr>
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<tr>
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<td>FSCI</td>
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<td>1</td>
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<td>2</td>
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<td>3</td>
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<td>4</td>
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<td>5</td>
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<td>6</td>
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<td>7</td>
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<td>8</td>
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<td>9</td>
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</tr>
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<tr>
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<td>评价结果</td>
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<td>显著转差</td>
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<td>明显转差</td>
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<td>较明显转差</td>
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<td>微弱转差</td>
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<td>基本不变</td>
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<td>微弱转好</td>
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<td>较明显转好</td>
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<td>明显转好</td>
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<td>显著转好</td>
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</tr>
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</tbody>
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</table>
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防风固沙服务功能变化指数(SPCI)计算方法:<p></p>
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<p></p>
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<div align="center">FSCI=0.4FSC<sub>SL</sub>+0.3FSC<sub>FS</sub>+0.3FSC<sub>FP</sub></div>
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式中:<p></p>
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<ul>
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<li>FSCI -- 防风固沙服务功能变化指数;</li>
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<li>FSC<sub>SL</sub> -- 土壤风蚀模数的归一化值;</li>
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<li>FSC<sub>FS</sub> -- 防风固沙量的归一化值;</li>
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<li>FSC<sub>FP</sub> -- 防风固沙服务功能保有率的归一化值。</li>
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</ul>
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</div>
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<div class="text_cell_render rendered_html" tabindex="-1">
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<h2 class="text-center">2.根据土壤风蚀模数的统计结果变化率,判断区域生态系统防风固沙服务功能变化</h2>
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<table width="90%">
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<tbody>
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<tr>
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<th>类别</th>
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<th colspan="9">
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<div align="center">判别等级</div>
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</th>
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</tr>
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<tr>
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<td>变化率(%)</td>
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<td>>15</td>
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<td>10~15</td>
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<td>5~10</td>
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<td>1~5</td>
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<td>-1~1</td>
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<td>-5~-1</td>
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<td>-10~-5</td>
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<td>-15~-10</td>
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<td>≤-15</td>
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</tr>
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<tr>
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<td>变化程度</td>
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<td>显著转差</td>
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<td>明显转差</td>
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<td>较明显转差</td>
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<td>微弱转差</td>
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<td>基本不变</td>
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<td>微弱转好</td>
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<td>较明显转好</td>
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<td>明显转好</td>
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<td>显著转好</td>
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</tr>
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<tr>
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<td>归一化值</td>
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<td>1</td>
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<td>2</td>
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<td>3</td>
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<td>4</td>
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<td>5</td>
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<td>6</td>
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<td>7</td>
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<td>8</td>
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<td>9</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 class="text_cell_render rendered_html" tabindex="-1">
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<h2 class="text-center">3.-根据防风固沙量和放风固沙服务功能保有率的统计结果变化率,判断区域生态系统防风固沙服务功能变化程度</h2>
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<table width="90%">
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<tbody>
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<tr>
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<th>类别</th>
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<th colspan="9">
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<div align="center">判别等级</div>
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</th>
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</tr>
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<tr>
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<td>变化率(%)</td>
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<td><-15</td>
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<td>-15~-10</td>
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<td>-10~-5</td>
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<td>-5~-1</td>
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<td>-1~1</td>
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<td>1~5</td>
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<td>5~10</td>
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<td>10~15</td>
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<td>≥15</td>
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</tr>
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<tr>
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<td>变化程度</td>
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<td>显著转差</td>
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<td>明显转差</td>
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<td>较明显转差</td>
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<td>微弱转差</td>
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<td>基本不变</td>
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<td>微弱转好</td>
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<td>较明显转好</td>
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<td>明显转好</td>
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<td>显著转好</td>
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</tr>
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<tr>
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<td>归一化值</td>
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<td>1</td>
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<td>2</td>
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<td>3</td>
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<td>4</td>
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<td>5</td>
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<td>6</td>
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<td>7</td>
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<td>8</td>
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<td>9</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 class="text_cell_render rendered_html" tabindex="-1">
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<h2 class="text-center">4.土壤风蚀模数估算方法</h2>
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<p>采用修正风蚀方程(RWEQ)计算:</p>
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<p></p>
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<div align="center"><img src="/images/ei/SL.PNG" alt="SL"></div>
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<p></p>
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<p></p>
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<div align="center"><img src="/images/ei/QX.PNG" alt="QX"></div>
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<p></p>
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<p></p>
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<div align="center"><img src="/images/ei/Qmax.PNG" alt="Qmax"></div>
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<p></p>
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<p></p>
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<div align="center"><img src="/images/ei/S.PNG" alt="S"></div>
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式中:<p></p>
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<ul>
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<li>SL -- 土壤风蚀模数(kg/m<sup>2</sup>);</li>
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<li>X -- 地块长度(m),取值100m;</li>
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<li>Qx -- 地块长度x处的沙通量;</li>
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<li>Qmax -- 风力的最大输沙能力(kg/m)</li>
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<li>S -- 关键地块长度(m)</li>
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<li>WF -- 气象因子(kg/m)</li>
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<li>EF -- 土壤可蚀性成分</li>
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<li>SCF -- 土壤结皮因子</li>
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<li>K' -- 土壤糙度因子(无量纲)</li>
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<li>COG -- 植被因子(无量纲)
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<div align="center">表 土壤风蚀模数估算方程参数设置及计算方法</div>
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<table>
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<tbody>
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<tr>
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<th>序号</th>
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<th>参数</th>
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<th>计算公式与参数设置</th>
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</tr>
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<tr>
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<td>1</td>
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<td>气候因子(WF)</td>
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<td>-</td>
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</tr>
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<tr>
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<td>2</td>
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<td>土壤可蚀性因子(EF)</td>
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<td>-</td>
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</tr>
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<tr>
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<td>3</td>
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<td>土壤结皮因子(SCF)</td>
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<td>-</td>
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</tr>
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<tr>
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<td>4</td>
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<td>土壤糙度因子(K<sup>'</sup>)</td>
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<td>-</td>
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</tr>
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<tr>
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<td>5</td>
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<td>植被因子(COG)</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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</li>
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</ul>
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</div>
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<div class="text_cell_render rendered_html" tabindex="-1">
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<h2 class="text-center">5.防风固沙量计算方法</h2>
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<p></p>
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<div align="center">FS=FS<sub>q</sub>-FS<sub>r</sub></div>
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<p></p>
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<p></p>
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<div align="center">FS<sub>q</sub>=SL<sub>q</sub>×M</div>
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<p></p>
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<p></p>
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<div align="center">FS<sub>r</sub>=SL<sub>r</sub>×M</div>
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式中:<p></p>
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<ul>
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<li>FS -- 计算单元上的生态系统防风固沙量(t∙a<sup>-1</sup>);</li>
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<li>FS<sub>q</sub> -- 计算单元上无植被保护下的潜在土壤风蚀量(t∙a<sup>-1</sup>);</li>
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<li>FS<sub>r</sub> -- 计算单元上现实覆被状态下的土壤风蚀量(t∙a<sup>-1</sup>);</li>
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<li>SL<sub>q</sub> -- 计算单元上无植被保护下的潜在土壤风蚀模数(t∙hm<sup>-2</sup>∙a<sup>-1</sup>);</li>
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<li>SL<sub>r</sub> -- 计算单元上现实覆被状态下的土壤风蚀模数(t∙hm<sup>-2</sup>∙a<sup>-1</sup>);</li>
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<li>M -- 计算单元面积(hm<sup>2</sup>)</li>
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</ul>
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</div>
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<div class="text_cell_render rendered_html" tabindex="-1">
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<h2 class="text-center">6.防风固沙服务功能保有率计算方法</h2>
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<p></p>
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<div align="center"><img src="/images/ei/FP.PNG" alt="FP"></div>
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式中:<p></p>
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<ul>
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<li>FP -- 评估单元的某类系统防风固沙服务功能保有率(%);</li>
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<li>FS -- 评估单元上某类生态系统的防风固沙量(t);</li>
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<li>FSg -- 三江源区同类最优生态系统的防风固沙量(t);</li>
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</ul>
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</div>
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</div>
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<div id="menu2" class="tab-pane fade">
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<h4>数据源</h4>
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</div>
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</div> |