Response of Water Yield Function to Land Use Change in Ganjiang Basin

Chun FU, Yue-rong HUANG, Wu-han PEI

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China Rural Water and Hydropower ›› 2022 ›› (4) : 31-40.

Response of Water Yield Function to Land Use Change in Ganjiang Basin

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Abstract

In this paper, the change of land use in the Ganjiang River Basin from 1990 to 2019 is analyzed, and the effect of land use change on water production in recent 30 years is studied by using the InVEST model. According to the results, the water production in the Ganjiang River Basin presents an m-type variation year by year, with more water production in the north and east, and less water production in the west and south, the results of scenario simulation show that the transfer of arable land and forestland as well as the transfer of construction land in Ganjiang Basin will promote the increase in water production, and the transfer of water area will promote the increase in water production. Rainfall is the main factor affecting water production, but it is not controllable, so it is practical to study the controllable land use change and to explore the change and influence of land use change on water production, it is of great significance to regional land use planning and water resources management.

Key words

Ganjiang Basin / InVEST model / water yield / scenario simulation method

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Chun FU , Yue-rong HUANG , Wu-han PEI. Response of Water Yield Function to Land Use Change in Ganjiang Basin. China Rural Water and Hydropower. 2022, 0(4): 31-40

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