Ecological restoration intensifies evapotranspiration in the Kubuqi Desert

被引：30

作者：

Chen, Peng ^{[1
,2
]}

Wang, Shuai ^{[1
,2
]}

Song, Shuang ^{[1
,2
]}

Wang, Yijia ^{[1
,2
]}

Wang, Yaping ^{[1
,2
]}

Gao, Dexin ^{[1
,2
]}

Li, Zidong ^{[1
,2
]}

机构：

[1] Beijing Normal Univ, Fac Geog Sci, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875, Peoples R China

[2] Beijing Normal Univ, Inst Land Surface Syst & Sustainabil, Fac Geog Sci, Beijing 100875, Peoples R China

来源：

ECOLOGICAL ENGINEERING | 2022年 / 175卷

基金：

中国国家自然科学基金;

关键词：

Evapotranspiration; Kubuqi desert; Driving factors; Ecological restoration; Desertification; LOESS PLATEAU; CHINA; WATER; AFFORESTATION; DESERTIFICATION; DEFORESTATION; FORESTS; DECLINE; CLIMATE; TREND;

D O I：

10.1016/j.ecoleng.2021.106504

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

Afforestation combats desertification and improves the ecological environment but leads to huge consumption of water resources. Understanding how ecological restoration affects the regional water balance is important for scientific desertification management. Using remote sensing satellite images and meteorological data, we analyzed the impacts of ecological restoration on water resources in the Kubuqi Desert during 1986-2017. Human activities accounted for 60.14% of the desertification reversal: annual average NDVI increased by 94%, the severe desertification area decreased by 30%, and the non-desertification area increased threefold. Vegeta-tion restoration accounted for 70.96% of the evapotranspiration increase of 5.17 mm.yr(-1). However, precipitation could not support the increased water demand, which relied on replenishment from groundwater and Yellow River diversion. Therefore, to ensure water security in the Kubuqi, species that use less water should be used in future ecological restoration, and decision-makers should carefully consider the huge water consumption cost of ecological restoration.

引用

页数：8

共 56 条

[1] A climatological study of evapotranspiration and moisture stress across the continental United States based on thermal remote sensing: 1. Model formulation [J].