环境保护科学2025，Vol.51Issue(1)：145-153,9.DOI:10.16803/j.cnki.issn.1004-6216.2023110018
基于InVEST模型的雅鲁藏布江流域土壤保持及影响因素研究
Soil conservation and impacting factors in the Yarlung Zangbo River Basin based on the InVEST model
摘要
Abstract
Based on the InVEST sediment delivery ratio module and the method of geographical detector,the spatio-temporal evolution characteristics and influencing factors of soil conservation in Yarlung Zangbo River Basin during 2000 to 2020 were evaluated.The results showed that the soil conservation per unit area of the Yajiang River Basin in 2000,2010 and 2020 were 80312.6,90194.5 and 84717.5 t/km2,respectively,mostly concentrated in the vicinity of the Grand Canyon of the lower reaches of the Yajiang River,and the inter-annual changes of soil conservation in the upper and middle reaches of the river were not obvious.The soil conservation core area was mainly forest land,and the soil conservation function of bare land was the weakest.With the increase of elevation and slope,soil conservation in the basin showed an inverted U-shaped trend of first increasing and then decreasing.Vegetation coverage and annual rainfall were the main factors affecting the soil conservation function of the basin,and the annual average q value was 0.46 and 0.43,indicating that vegetation construction should be implemented according to local conditions and agricultural land should be strictly controlled in the work of water and soil management in the basin.关键词
土壤保持/InVEST/泥沙输移比/地理探测器/雅鲁藏布江流域Key words
soil conservation/InVEST/sediment delivery ratio/geographical detector/Yarlung Zangbo River Basin分类
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格桑卓玛,王菲,朱晓东..基于InVEST模型的雅鲁藏布江流域土壤保持及影响因素研究[J].环境保护科学,2025,51(1):145-153,9.
