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量化政策驱动的大规模植被恢复对中国干旱地区蒸发的效应

Yayong Xue¹, Haibin Liang², Haozhe Zhang¹

¹College of Geographical and Remote Sensing Science, Xinjiang University, Urumqi, 830046, China.

Journal of environmental management

|August 3, 2023

概括

由于植被恢复,中国的干旱地区的蒸发转化显著增加. 降水是主要的驱动因素,叶面积指数也对绿化地区至关重要,影响了水循环的动态.

科学领域:

环境科学环境科学
水文学的水文学
气候科学气候科学

背景情况:

蒸发转化 (ET) 对水循环和气候反至关重要.
关于ET对干旱地区植被恢复和气候变化的反应的定量研究很少.

研究的目的:

从2000年至2018年恢复后,检查中国干旱地区的ET变化.
研究环境因素 (TEM,PRE,RAD,VPD,SM,LAI) 对ET的影响.
开发一种新方法来检测土地使用和土地覆盖变化 (LUCC) 的ET变化.

主要方法:

对ET趋势和影响因素的定量分析.
对环境变量进行统计调查 (TEM,PRE,RAD,VPD,SM,LAI).
检测ET变化的新方法归因于LUCC.

主要成果:

ET显示出显著的增长趋势 (3.54 mm yr-1).
降雨 (PRE) 是主要的驱动因素 (>50%的贡献),特别是在绿化最小的情况下.
叶面积指数 (LAI) 在绿化区域显著影响了ET (约40%的贡献).
植被恢复扩大了高透气率区域,增加了来自LUCC的ET.

结论:

植被恢复在中国的干旱地区显著增加了ET.
PRE和LAI是影响ET的关键因素,基于植被绿化发挥着不同的作用.
LUCC,特别是从耕地/草地到森林,大大改变了ET.

关键词:

中国北部的干旱地区 (DNC)蒸发透气 (ET) 是一种土地使用和土地覆盖的变化 (LUCC)植物恢复项目植物恢复项目

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