Impacts of Land-Use and Land-Cover Changes on Water Yield: A Case Study in Jing-Jin-Ji, China

Suxiao Li, Hong Yang, Martin Lacayo, Junguo Liu and Guangchun Lei
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Suxiao Li: School of Nature Conservation, Beijing Forestry University, Qinghua East Road 35, Haidian District, Beijing 100083, China
Hong Yang: Eawag, Swiss Federal Institute of Aquatic Science and Technology, Uberlandstrasse, 133, 8600 Dubendorf, Switzerland
Martin Lacayo: EnviroSPACE, Institute for Environmental Sciences, University of Geneva, Bd Carl-Vogt 66, 1205 Geneva, Switzerland
Junguo Liu: Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Xueyuan Road 1088, Nanshan District, Shenzhen 518055, China
Guangchun Lei: School of Nature Conservation, Beijing Forestry University, Qinghua East Road 35, Haidian District, Beijing 100083, China

Sustainability, 2018, vol. 10, issue 4, 1-16

Abstract: Knowing the impact of land-use and land-cover (LULC) changes on the distribution of water yield (WY) is essential for water resource management. Using the Integrated Valuation of Ecosystem Services and Tradeoffs (InVEST) model, we investigated the spatial-temporal variations of WY from 1990 to 2015 in China’s northern semi-arid region of Beijing–Tianjin–Hebei (Jing-Jin-Ji). We quantified the combined effects of LULC dynamics and climatic variation on WY. Furthermore, we identified the relative contribution of main LULC types to WY. For our study region, the built-up area increased by 35.66% (5380 km 2 ) during the study period. In the meantime, cropland, grassland, and wetland decreased continuously. The expansion of built-up area and decline of vegetated land led to an increase of 1047 million m 3 (5.1%) in total WY. The impacts of LULC changes on WY were mainly determined by the biophysical characteristics of LULC composition. Vegetated land has relatively lower WY coefficients due to higher rates of evapotranspiration and water infiltration. Built-up areas and bare land have higher WY coefficients as a result of their impermeable surface. The spatial-temporal analysis of WY with specification of WY coefficients by LULC types can facilitate integrated land-use planning and water resource management.

Keywords: water yield; land use and land cover changes; InVEST; Jing-Jin-Ji (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (18)

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