基于Landsat影像的北京植被覆盖度变化趋势分析

王曦,张怡雯

An Analysis of Change Trend of Fractional Vegetation Cover in Beijing based on Landsat Imagery

Xi Wang,Yiwen Zhang

表2 植被覆盖度窗口标准差呈显著（p-value＜0.05）上升/下降趋势的面积比重

Table 2 Proportion of significant （p-value＜0.05） increasing / decreasing trends of moving window standard deviation of FVC

7×7窗口 11×11窗口 21×21窗口 31×31窗口 41×41窗口 北京全市 8.6%/14.6% 11.2%/14.5% 16.2%/12.6% 20.1%/10.8% 23.2%/9.5% 东城区 53.43%/0.86% 62.79%/0.77% 70.78%/0.65% 75.54%/0.32% 77.30%/0.21% 西城区 55.44%/0.13% 67.88%/0.04% 80.27%/0.02% 85.73%/0.00% 88.55%/0.00% 朝阳区 18.24%/1.68% 21.97%/1.63% 29.91%/1.24% 36.44%/0.92% 41.86%/0.82% 丰台区 14.34%/1.83% 17.94%/1.38% 26.05%/1.18% 32.78%/1.18% 36.55%/1.09% 石景山区 11.69%/6.17% 13.65%/4.29% 18.17%/1.84% 20.31%/0.85% 21.38%/0.86% 海淀区 19.60%/3.74% 24.38%/2.81% 34.29%/1.83% 41.16%/1.48% 46.46%/1.31% 门头沟区 1.88%/16.16% 2.50%/14.81% 3.75%/11.06% 4.62%/8.09% 5.23%/6.05% 房山区 9.14%/8.22% 12.24%/6.19% 18.67%/3.13% 23.32%/1.66% 26.68%/0.86% 通州区 16.42%/1.11% 20.19%/0.73% 29.16%/0.36% 37.82%/0.32% 44.76%/0.31% 顺义区 17.08%/2.71% 22.93%/2.40% 35.65%/1.90% 46.35%/1.64% 55.07%/1.50% 昌平区 8.23%/13.35% 11.24%/12.22% 18.09%/8.85% 23.74%/6.41% 28.04%/4.94% 大兴区 17.50%/1.18% 21.51%/0.89% 29.37%/0.49% 35.28%/0.25% 39.99%/0.13% 怀柔区 3.67%/27.72% 4.98%/29.66% 7.45%/28.58% 9.13%/26.09% 10.48%/23.77% 平谷区 9.75%/16.10% 13.54%/15.71% 20.89%/11.88% 26.05%/8.10% 30.44%/5.46% 密云区 4.67%/21.87% 6.00%/21.84% 8.08%/18.61% 9.27%/15.59% 10.14%/13.34% 延庆区 2.57%/25.15% 3.24%/27.08% 4.34%/27.40% 5.10%/26.02% 5.55%/24.77%