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Spatial–Temporal Matching Characteristics between Agricultural Water and Land Resources in Ningxia, Northwest China

1
Key Laboratory of State Forestry Administration on Soil and Water Conservation, Beijing Engineering Research Center of Soil and Water Conservation, School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China
2
State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, China
*
Authors to whom correspondence should be addressed.
Water 2019, 11(7), 1460; https://doi.org/10.3390/w11071460
Received: 11 June 2019 / Revised: 25 June 2019 / Accepted: 13 July 2019 / Published: 14 July 2019
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Abstract

Agricultural water and land resources are key elements of human production and their unbalanced distribution has threatened the sustainable development of agriculture and regional food security. This study is aiming to investigate the spatial–temporal changes of matching characteristics between agricultural water and land resources in Ningxia during 2007 to 2017. The agricultural irrigation water (AIW), farmland area (FA) and effective irrigated area (EIA) were selected as quantity parameters for agricultural water and land resource. Results show that the gravity centers of AIW and EIA both moved in the southeast direction, while the gravity center of FA moved northwestward, which indicated a better spatial matching degree between AIW and EIA. According to the Gini coefficient and total spatial mismatch index, the spatial mismatch between AIW and FA of Ningxia was remedied and that of AIW and EIA was worse. Counties with sufficient and insufficient AIW were distributed in the north and the south of Ningxia, respectively. The sensitivity of agricultural irrigation water to land resources remarkably increased in the study period, particularly for the counties in northern area of Ningxia. The findings may provide implications for effective management of regional agricultural water and land resources. View Full-Text
Keywords: agricultural water and land resources; gravity center; Gini coefficient; spatial mismatch index; Ningxia agricultural water and land resources; gravity center; Gini coefficient; spatial mismatch index; Ningxia
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Du, J.; Yang, Z.; Wang, H.; Yang, G.; Li, S. Spatial–Temporal Matching Characteristics between Agricultural Water and Land Resources in Ningxia, Northwest China. Water 2019, 11, 1460.

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