Impact of variability in the hydrological cycle components on vegetation growth in an alpine basin of the southeastern Tibet Plateau, China

被引：2

作者：

Ban, Chunguang ^{[1
,2
]}

Xu, Zongxue ^{[1
,2
]}

Zuo, Depeng ^{[1
,2
]}

Zhang, Rui ^{[1
,2
]}

Chen, Hao ^{[1
,2
]}

Ye, Chenlei ^{[1
,2
]}

Wang, Jing ^{[3
]}

Waciren, Da ^{[3
]}

机构：

[1] Beijing Normal Univ, Coll Water Sci, Beijing 100875, Peoples R China

[2] Beijing Key Lab Urban Hydrol Cycle & Sponge City, Beijing 100875, Peoples R China

[3] Hydrol Survey Bur Tibet Autonomous Reg, Lhasa 850000, Peoples R China

来源：

HYDROLOGY RESEARCH | 2022年 / 53卷 / 01期

基金：

中国国家自然科学基金;

关键词：

hydrological cycle components; terrestrial water storage; Tibet Plateau; vegetation; Yarlung Zangbo River Basin; ZANGBO RIVER-BASIN; 3-RIVER SOURCE REGION; CLIMATE-CHANGE; SATELLITE-OBSERVATIONS; DRIVING FORCES; SNOW COVER; LAND-USE; RUNOFF; GRASSLANDS; DYNAMICS;

D O I：

10.2166/nh.2021.086

中图分类号：

TV21 [水资源调查与水利规划];

学科分类号：

081501 ;

摘要：

Vegetation is affected by hydrological cycle components that have altered under the influence of climate change. Therefore, it is necessary to investigate the impact of hydrological cycle components on regional vegetation growth, especially in alpine regions. In this study, we employed multiple satellite observations to comprehensively investigate the spatial heterogeneity of hydrological cycle components in the Yarlung Zangbo River (YZR) basin for the period 1982-2014 and to determine the underlying mechanisms driving regional vegetation growth. Results showed that the normalized difference vegetation index (NDVI) values during May-October were high, and the NDVI values increased from the upper reaches of the YZR to its lower reaches, reflecting the enhancement of vegetation growth. Annual precipitation, precipitation-actual evapotranspiration (AET), and snow water equivalent (SWE) all affect terrestrial water storage in the YZR basin through changes in soil moisture (SM), i.e., SM is the intermediate variable. Seasonal variability of vegetation is controlled mainly by precipitation, temperature, AET, SM anomaly, and SWE. Groundwater storage anomalies (GWA) and terrestrial water storage anomalies (TWSA) were not reliable indicators of vegetation growth in the YZR basin and the midstream and downstream regions. The effects of GWA and TWSA on vegetation occurred in the upstream region.

引用

页码：124 / 140

页数：17

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