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Multi-element valuation of ecosystem service value of water conservancy projects
accounting for spatial heterogeneity

1，2 1，2 1，2 3 1，2

FU Yicheng ，ZHANG Jian ，ZHAO Jinyong ，HAN Zhenjiang ，ZHANG Chunling

（1. State Key Laboratory of Water Cycle and Water Security in River Basin，China Institute of Water Resources and Hydropower Research，

Beijing 100038，China；2. Key Laboratory of Water Safety for Beijing-Tianjin-Hebei Region of Ministry of Water Resources，

Beijing 100038，China；3. Water Affairs Center of Guangyang District，Langfang City，Langfang 065000，China）

Abstract：Regional sustainable development and socio-economic progress are inherently dependent on the effective
delivery of ecological services provided by water conservancy projects. Quantifying the ecosystem service value

（ESV）of regional water conservancy projects is essential for advancing water ecosystem conservation and environ‐

mental improvement，requiring multi-element valuation approaches that incorporate rigorous methodological selec‐

tion，dynamic multi-factor coupling analysis，and the identification of regional characteristics. This study constructed

a systematic valuation framework for the ESV of water conservancy projects，conducted an assessment of project

impact，and proposes a method for quantifying the market value of water ecological products. From the perspective of

land cover-function value matching，the InVEST model was utilized to quantify regional impact extent and module

value，and the ESV of water conservancy projects was enhanced through system optimization methods. Based on a

land use conversion matrix，spatial distribution maps of water conservancy project ESV for different periods were gen‐
erated to explore their spatiotemporal variation characteristics and distribution patterns. The study results indicate

that from 2000 to 2020，Langfang City experienced an increase in urbanized land area and a slight decrease in vegeta‐

tion cover，with a dynamic index of -0.03%. Concurrently，the ESV of water conservancy projects showed an upward

trend，increasing by 58.42%. The ESV of water conservancy projects exhibited a significant positive correlation with
vegetation and water body areas，and a significant negative correlation with bare land area. Furthermore，socio-

economic indicators related to Nature-based Solutions （NbS）-oriented eco-environmental industries and ecological
restoration showed a correlation coefficient greater than 0.3 with the ESV，indicating a strong correlation. These find‐

ings can provide technical support for achieving regional water ecological security and the sustainable utilization of
water and soil resources.

Keywords：water conservancy projects；ecological service value；multi-element valuation；spatial distribution；

Langfang City
（责任编辑：李 娜）
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