Study of ecosystem service functions in typical receiving areas of the South-to-North Water Diversion Central Route based on a set of long time series.

(2) Habitat quality in Hebi shows an overall trend towards better development, with water availability decreasing and then increasing; the zoning of ecosystem services in Hebi is divided into three classes: superior, good and general, with the area covered by the superior and general classes expanding year by year.

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ly small change in landscape connectivity and a moderating change in heterogeneity within the study area; the Contagion index (CONTAG), which reflects the degree of sprawl of different landscapes, decreases from 62.47 to 59.53 between 2000 and 2020, with a more pronounced downward trend, indicating a decreasing trend in landscape connectivity and an increasing degree of landscape fragmentation in the study area; the Shannon diversity index (SHDI) reflects the heterogeneity, richness and complexity of the landscape.

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The shannon diversity index in the study area continues to maintain an increasing trend, from 0.87 in 2000 to 0.96 in 2020, indicating that the heterogeneity, richness and complexity of the landscape in Hebi are in an increasing stage. 4.3 Ecosystem service function analysis Based on the land use data and other pre-processed data of Hebi city, the habitat quality module of the InVEST

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