Study on the Agricultural Grey Water Footprint and Efficiency in Henan Province: A Spatiotemporal Analysis
Downloads
The Managing agricultural water pollution is crucial for mitigating the water crisis and fostering sustainable regional development. Therefore, it is essential to understand the spatiotemporal characteristics of agricultural Grey Water Footprint (GWF) and its efficiency to formulate tailored regional management strategies. Building on this, the study first calculated the agricultural GWF and efficiency for 18 prefecture-level cities in Henan Province from 2001 to 2021, and then analyzed their spatiotemporal patterns using ArcGIS software. The findings reveal: (1) In Henan Province, the majority of agricultural grey water footprint stems from crop cultivation, particularly from phosphorus fertilizers. Over time, the agricultural grey water footprint in Henan Province initially increased and then decreased, with the southern areas generally exhibiting a higher footprint compared to the north. (2) Prior to 2012, the efficiency of agricultural grey water footprint in Henan Province remained relatively stable, but has since seen a sharp rise, with the central region consistently demonstrating higher efficiency. These results offer critical decision-making insights for managing agricultural water pollution and guiding industry rest.
Zhai, X. , Xia, J. , & Zhang, Y. (2014). Water quality variation in the highly disturbed huai river basin, china from 1994 to 2005 by multi-statistical analyses. Science of the Total Environment, 496, 594-606.
Hoekstra,A.Y..(2003).Virtual Water Trade: Proceedings of the International Expert Meeting on Virtual Water Trade.
Hoekstra A Y, CHapagain A K. (2008)Globalization of water: Sharing the planet’s freshwater resources. Water Encyclopedia, 2008, 43(2):147.
Hoekstra A Y, CHapagain A K, ALdaya M M,et al.(2012).Handbook of Water Footprint Assessment.Beijing Science Press, 2012:21-22
CHapagain A K, HOekstra A Y, Savenije H H G, et al.(2006).The water footprint of cotton consumption: An assessment of the impact of worldwide consumption of cotton products on the water resources in the cotton producing countries. Ecological Economics, 2006, 60(1): 186-203.
Zhang Xin, Li Lei, Zhen Zhilei, et al.(2019) Analysis of Agricultural Grey Water Footprints in the Fen River Basin from the Perspectives of Time, Space, and Efficiency [J] Chinese Environmental Science, 2019, 39 (4): 1502-1510
Mekonnen, Mesfin M., and Arjen Y. Hoekstra.(2015)."Global gray water footprint and water pollution levels related to anthropogenic nitrogen loads to fresh water." Environmental science & technology 49.21 (2015): 12860-12868.
Song, Mengfei, et al.(2023) "Toward better agricultural grey water footprint allocation under economy-resource factors constraint." Ecological Indicators 154 (2023): 110806.
CUI S B, DONG H J, WILSON J. (2020).Grey water footprint evaluation and driving force analysis of eight economic regions in China. Environmental Science and Pollution Research, 2020, 27(16): 20380-20391
