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2 2000-2014年西南高山亚高山区各流域总初级生产力(GPP)、蒸散(ET)、水分利用效率(WUE)平均值、WUE变化趋势

Table 2 Mean gross primary production (GPP), evapotranspiration (ET), water use efficiency (WUE), and the change rates of WUE in different watersheds of the alpine and subalpine area of southwestern China from 2000 to 2014

研究区域 Study region 总初级生产力平均值 Mean GPP (g C·m-2) 蒸散平均值 Mean ET (mm) 水分利用效率平均值 Mean WUE (g·m-2·mm-1) 水分利用效率变化趋势 Change rates of WUE (g·m-2·mm-1·a-1) 嘉陵江上游 Upstream of Jialing River 877 640 1.37 -0.001 岷江上游 Upstream of Minjiang River 833 722 1.15 0.004 大渡河 Dadu River 634 614 1.03 0.007 雅砻江上游 Upstream of Yalong River 697 544 1.28 0.013 金沙江上游 Upstream of Jinsha River 731 535 1.37 0.021* 澜沧江上游 Upstream of Lancang River 295 515 0.57 0.011 怒江上游 Upstream of Nujiang River 235 512 0.46 0.009* 雅鲁藏布江中游高山亚高山区 Alpine and subalpine area of middle-lower reaches of Yarlung Zangbo River 322 721 0.45 0.006 藏南高山亚高山区 Alpine and subalpine area of Southern Xizang 909 814 1.12 0.011*