干旱区生态环境知识资源中心(Arid): The influence of optimized allocation of agricultural water and soil resources on irrigation and drainage in the Jingdian Irrigation District, China

Arid

DOI	10.1007/s00271-019-00649-z
	The influence of optimized allocation of agricultural water and soil resources on irrigation and drainage in the Jingdian Irrigation District, China
	Li, Jingsi 1; Fei, Liangjun 1; Li, Shan 1; Shi, Zhongxing 2; Liu, Lihua 1
通讯作者	Fei, Liangjun
来源期刊	IRRIGATION SCIENCE
ISSN	0342-7188
EISSN	1432-1319
出版年	2020
卷号	38 期号:1 页码:37-47
英文摘要	Reasonable regulation of irrigation and drainage is an important way to decrease water resource waste and water pollution, and to ensure the sustainable utilization of water resources. In this study, appropriate irrigation and drainage methods are proposed by optimizing agricultural water and soil resources based on the current status of water resource utilization in irrigation district in Northwest China, and as much as possible to reduce the amount of irrigation and drainage while ensuring the necessary for salt leaching. A two-layer model was considered to maximize economic benefits and relative production through a nonlinear algorithm to optimize the crop acreage, irrigation quota and the amount of irrigation water at each crop growth stage. A support vector machine regression model for predicting drainage was constructed, including drainage and irrigation, precipitation, evaporation and groundwater depth. Additionally, the amount of drainage water was compared before and after the optimization of irrigation. The amount of irrigation water demand in a wet year (2014), normal year (2008) and dry year (2013) decreased by 23.85 million m(3), 12.85 million m(3) and 17.50 million m(3), respectively, after optimization of the crop planting structure and irrigation scheduling. Furthermore, the net economic benefit increased by 3.76 billion yuan, 1.14 billion yuan and 2.34 billion yuan, as compared with the actual output value. The amount of drainage water decreased by 8.60%, 8.93% and 5.21% compared to that with no optimization in a wet year (2014), normal year (2008) and dry year (2013), respectively. This method can scientifically allocate the amount of irrigation and drainage, feasibly improve economic benefits and prevent soil salinization, thus providing guidance for efficient water resource utilization and ecological protection in arid areas.
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000511514800003
WOS关键词	MODEL ; QUALITY ; INVESTMENTS ; POVERTY
WOS类目	Agronomy ; Water Resources
WOS研究方向	Agriculture ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314823
作者单位	1.Xian Univ Technol, State Key Lab Ecohydraul Northwest Arid Reg China, Xian 710048, Shaanxi, Peoples R China; 2.Gansu Jingtaichuan Irrigat Management Bur, Jingtai 730400, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Li, Jingsi,Fei, Liangjun,Li, Shan,et al. The influence of optimized allocation of agricultural water and soil resources on irrigation and drainage in the Jingdian Irrigation District, China[J],2020,38(1):37-47.
APA	Li, Jingsi,Fei, Liangjun,Li, Shan,Shi, Zhongxing,&Liu, Lihua.(2020).The influence of optimized allocation of agricultural water and soil resources on irrigation and drainage in the Jingdian Irrigation District, China.IRRIGATION SCIENCE,38(1),37-47.
MLA	Li, Jingsi,et al."The influence of optimized allocation of agricultural water and soil resources on irrigation and drainage in the Jingdian Irrigation District, China".IRRIGATION SCIENCE 38.1(2020):37-47.