西南高山亚高山区植被水分利用效率时空特征及其与气候因子的关系

周雄, 孙鹏森, 张明芳, 刘世荣

Spatio-temporal characteristics of vegetation water use efficiency and their relationships with climatic factors in alpine and subalpine area of southwestern China

ZHOU Xiong, SUN Peng-Sen, ZHANG Ming-Fang, LIU Shi-Rong

表1 西南高山亚高山区不同植被类型的面积比例、平均海拔、年平均气温和年降水量

Table 1 The area ratio, mean altitude, mean annual air temperature and precipitation of different vegetation types in the alpine and subalpine area of southwestern China

植被类型 Vegetation type 面积比例 Area ratio (%) 平均海拔 Mean altitude (m) 年平均气温 Mean annual air temperature (℃) 年降水量 Mean annual precipitation (mm) 常绿针叶林 Evergreen needleleaf forest 7.22 3 243 7.97 846 常绿阔叶林 Evergreen broadleaf forest 1.52 1 581 16.92 665 落叶阔叶林 Deciduous broadleaf forest 1.59 2 706 8.48 897 混交林 Mixed forest 8.51 1 941 7.75 576 郁闭灌丛 Closed shrublands 0.02 3 328 9.33 817 有林草原 Woody savannas 12.71 3 320 6.74 867 稀树草原 Savannas 3.71 2 765 10.20 899 草地 Grassland 63.64 4 434 1.15 733 农田 Cropland 1.08 2 016 12.83 834