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<ul class="nav nav-tabs">
<li class="active"><a data-toggle="tab" href="#home">评估结果</a></li>
<li><a data-toggle="tab" href="#menu1">技术规范</a></li>
<li><a data-toggle="tab" href="#menu2">数据源</a></li>
</ul>
<div class="tab-content">
<div id="home" class="tab-pane fade in active">
<div class="text_cell_render rendered_html" tabindex="-1">
<h2 class="text-center">1.土壤侵蚀模数及其变化统计表</h2>
<table width="90%">
<tbody>
<tr>
<th rowspan="2">区域</th>
<th colspan="2">背景年~基准年</th>
<th colspan="2">基准年~评估年</th>
<th colspan="2">两时段平均值</th>
</tr>
<tr>
<th>平均值</th>
<th>倾斜率</th>
<th>平均值</th>
<th>倾斜率</th>
<th>差值</th>
<th>变化率</th>
</tr>
<tr>
<td>评价单元1</td>
<td>-</td>
<td>-</td>
<td>-</td>
<td>-</td>
<td>-</td>
<td>-</td>
</tr>
<tr>
<td>评价单元2</td>
<td>-</td>
<td>-</td>
<td>-</td>
<td>-</td>
<td>-</td>
<td>-</td>
</tr>
</tbody>
</table>
<h2 class="text-center">2.生态系统土壤保持量及其变化统计表</h2>
<table width="90%">
<tbody>
<tr>
<th rowspan="2">区域</th>
<th colspan="2">背景年~基准年</th>
<th colspan="2">基准年~评估年</th>
<th colspan="2">两时段平均值</th>
</tr>
<tr>
<th>平均值</th>
<th>倾斜率</th>
<th>平均值</th>
<th>倾斜率</th>
<th>差值</th>
<th>变化率</th>
</tr>
<tr>
<td>评价单元1</td>
<td>-</td>
<td>-</td>
<td>-</td>
<td>-</td>
<td>-</td>
<td>-</td>
</tr>
<tr>
<td>评价单元2</td>
<td>-</td>
<td>-</td>
<td>-</td>
<td>-</td>
<td>-</td>
<td>-</td>
</tr>
</tbody>
</table>
<h2 class="text-center">3.生态系统土壤保持服务功能保有率及其变化统计表</h2>
<table width="90%">
<tbody>
<tr>
<th rowspan="2">区域</th>
<th colspan="2">背景年~基准年</th>
<th colspan="2">基准年~评估年</th>
<th colspan="2">两时段平均值</th>
</tr>
<tr>
<th>平均值</th>
<th>倾斜率</th>
<th>平均值</th>
<th>倾斜率</th>
<th>差值</th>
<th>变化率</th>
</tr>
<tr>
<td>评价单元1</td>
<td>-</td>
<td>-</td>
<td>-</td>
<td>-</td>
<td>-</td>
<td>-</td>
</tr>
<tr>
<td>评价单元2</td>
<td>-</td>
<td>-</td>
<td>-</td>
<td>-</td>
<td>-</td>
<td>-</td>
</tr>
</tbody>
</table>
<h2 class="text-center">4.主要河流径流含沙量及其变化统计表</h2>
<table width="90%">
<tbody>
<tr>
<th rowspan="2">区域</th>
<th colspan="2">背景年~基准年</th>
<th colspan="2">基准年~评估年</th>
<th colspan="2">两时段平均值</th>
</tr>
<tr>
<th>平均值</th>
<th>倾斜率</th>
<th>平均值</th>
<th>倾斜率</th>
<th>差值</th>
<th>变化率</th>
</tr>
<tr>
<td>黄河流域</td>
<td>-</td>
<td>-</td>
<td>-</td>
<td>-</td>
<td>-</td>
<td>-</td>
</tr>
<tr>
<td>长江流域</td>
<td>-</td>
<td>-</td>
<td>-</td>
<td>-</td>
<td>-</td>
<td>-</td>
</tr>
<tr>
<td>澜沧江流域</td>
<td>-</td>
<td>-</td>
<td>-</td>
<td>-</td>
<td>-</td>
<td>-</td>
</tr>
</tbody>
</table>
<h2 class="text-center">5.土壤风蚀模数及其变化统计表</h2>
<table width="90%">
<tbody>
<tr>
<th rowspan="2">区域</th>
<th colspan="2">背景年~基准年</th>
<th colspan="2">基准年~评估年</th>
<th colspan="2">两时段平均值</th>
</tr>
<tr>
<th>平均值</th>
<th>倾斜率</th>
<th>平均值</th>
<th>倾斜率</th>
<th>差值</th>
<th>变化率</th>
</tr>
<tr>
<td>评价单元1</td>
<td>-</td>
<td>-</td>
<td>-</td>
<td>-</td>
<td>-</td>
<td>-</td>
</tr>
<tr>
<td>评价单元2</td>
<td>-</td>
<td>-</td>
<td>-</td>
<td>-</td>
<td>-</td>
<td>-</td>
</tr>
</tbody>
</table>
</div>
</div>
<div id="menu1" class="tab-pane fade">
<div class="text_cell_render rendered_html" tabindex="-1">
<h2 class="text-center">生态系统土壤保持功能变化评价</h2>
<p></p>
<p></p>
<p></p>
<p></p>
<p></p>
<p></p>
<table width="90%">
<tbody>
<tr>
<th>类别</th>
<th colspan="9">
<div align="center">判别等级</div>
</th>
</tr>
<tr>
<td>SPCI</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>
<tr>
<td>评价结果</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>
</tbody>
</table>
土壤保持服务功能变化指数（SPCI）计算方法：<p></p>
<p></p>
<div align="center">SPCI=SPC<sub>A</sub>+SPC<sub>SK</sub>+SPC<sub>SP</sub>+SPC<sub>RS</sub></div>
式中:<p></p>
<ul>
<li>SPCI -- 土壤保持服务功能变化指数;</li>
<li>SPC<sub>A</sub> -- 土壤水蚀模数的归一化值;</li>
<li>SPC<sub>SK</sub> -- 土壤保持量的归一化值;</li>
<li>SPC<sub>SP</sub> -- 土壤保持服务功能保有率的归一化值;</li>
<li>SPC<sub>RS</sub> -- 河流径流含沙量的归一化值;</li>
</ul>
</div>
<div class="text_cell_render rendered_html" tabindex="-1">
<h2 class="text-center">2.根据土壤水蚀模数和河流径流含沙量统计结果的变化率，判断区域生态系统土壤保持服务功能变化程度</h2>
<table width="90%">
<tbody>
<tr>
<th>类别</th>
<th colspan="9">
<div align="center">判别等级</div>
</th>
</tr>
<tr>
<td>变化率(%)</td>
<td>&gt;15</td>
<td>10~15</td>
<td>5~10</td>
<td>1~5</td>
<td>-1~1</td>
<td>-5~-1</td>
<td>-10~-5</td>
<td>-15~-10</td>
<td>≤-15</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 class="text_cell_render rendered_html" tabindex="-1">
<h2 class="text-center">3.根据土壤保持量和土壤保持服务功能保有率统计结果的变化率，判断区域生态系统土壤保持服务功能变化程度</h2>
<table width="90%">
<tbody>
<tr>
<th>类别</th>
<th colspan="9">
<div align="center">判别等级</div>
</th>
</tr>
<tr>
<td>变化率(%)</td>
<td>&lt;-15</td>
<td>-15~-10</td>
<td>-10~-5</td>
<td>-5~-1</td>
<td>-1~1</td>
<td>1~5</td>
<td>5~10</td>
<td>10~15</td>
<td>≥15</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 class="text_cell_render rendered_html" tabindex="-1">
<h2 class="text-center">4.土壤水蚀模数估算方法</h2>
<p>可利用水土流失地面监测数据、水文站径流含沙量观测数据计算。也可根据修正的通用土壤流失方程（RUSLE）计算，公式如下:</p>
<p></p>
<div align="center">A=R×K×L×S×C×P</div>
式中：<p></p>
<ul>
<li>A -- 土壤水蚀模数(t∙hm<sup>-2</sup>∙a<sup>-1</sup>);</li>
<li>R -- 降雨侵蚀力因子(),见表“土壤水蚀模数估算方程参数设置及计算方法”;</li>
<li>K -- 土壤可蚀性因子(),见表“土壤水蚀模数估算方程参数设置及计算方法”</li>
<li>L -- 坡长因子(无量纲);</li>
<li>S -- 坡度因子(无量纲);</li>
<li>C -- 覆盖和管理因子(无量纲),取值范围为0~1,见表“土壤水蚀模数估算方程参数设置及计算方法”;</li>
<li>P -- 水土保持措施因子(无量纲),取值范围为0~1,取值为0.95;
<div align="center">表 土壤水蚀模数估算方程参数设置及计算方法</div>
<table width="90%">
<tbody>
<tr>
<th>序号</th>
<th>参数</th>
<th width="75%">计算公式与参数设置</th>
</tr>
<tr>
<td>1</td>
<td>降雨侵蚀力因子(R)</td>
<td>-</td>
</tr>
<tr>
<td>2</td>
<td>土壤可蚀性因子(K)</td>
<td>-</td>
</tr>
<tr>
<td>3</td>
<td>坡长坡度因子(LS)</td>
<td>-</td>
</tr>
<tr>
<td>4</td>
<td>植被覆盖因子(C)</td>
<td>-</td>
</tr>
</tbody>
</table>
</li>
</ul>
</div>
<div class="text_cell_render rendered_html" tabindex="-1">
<h2 class="text-center">5.生态系统土壤保持量估算方法</h2>
<p></p>
<div align="center">SK=SK<sub>q</sub>-SK<sub>r</sub></div>
<p></p>
<p></p>
<div align="center">SK<sub>q</sub>=A<sub>q</sub>×M</div>
<p></p>
<p></p>
<div align="center">SK<sub>r</sub>=A<sub>r</sub>×M</div>
式中:<p></p>
<ul>
<li>SK -- 计算单元上的生态系统土壤保持量(t∙a<sup>-1</sup>)</li>
<li>SK<sub>q</sub> -- 计算单元上无植被保护下的潜在土壤侵蚀量(t∙a<sup>-1</sup>);</li>
<li>SK<sub>r</sub> -- 计算单元上现实覆被状态下的土壤侵蚀量(t∙a<sup>-1</sup>);</li>
<li>A<sub>q</sub> -- 计算单元上无植被保护下的潜在土壤侵蚀模数(t∙hm<sup>-2</sup>∙a<sup>-1</sup>);</li>
<li>A<sub>r</sub> -- 计算单元上现实覆被状态下的土壤侵蚀模数(t∙hm<sup>-2</sup>∙a<sup>-1</sup>);</li>
<li>M -- 计算单元的面积(hm<sup>2</sup>)</li>
</ul>
</div>
<div class="text_cell_render rendered_html" tabindex="-1">
<h2 class="text-center">6.生态系统土壤保持服务功能保有率计算方法</h2>
<p></p>
<div align="center"><img src="/images/ei/SP.PNG" alt=""></div>
式中:<p></p>
<ul>
<li>SP -- 评估单元的某类生态系统土壤保持服务功能保有率(%);</li>
<li>SK -- 评估单元上某类生态系统的土壤保持量(t);</li>
<li>SK<sub>g</sub> -- 三江源区同类最优生态系统的土壤保持量(t).</li>
</ul>
</div>
</div>
<div id="menu2" class="tab-pane fade">
<h4>数据源</h4>
</div>
</div>
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