干旱区生态环境知识资源中心(Arid): Hydro-agro-economic optimization for irrigated farming in an arid region: The Hetao Irrigation District, Inner Mongolia

Arid

DOI	10.1016/j.agwat.2022.108095
	Hydro-agro-economic optimization for irrigated farming in an arid region: The Hetao Irrigation District, Inner Mongolia
	Cao, Zhaodan; Zhu, Tingju; Cai, Ximing
通讯作者	Zhu, TJ
来源期刊	AGRICULTURAL WATER MANAGEMENT
ISSN	0378-3774
EISSN	1873-2283
出版年	2023
卷号	277
英文摘要	Water shortage and soil salinization are the key limiting factors in agricultural production of arid and semi-arid regions. Located in western Inner Mongolia of China, the Hetao Irrigation District (HID) is one of the top three largest irrigation districts in China. Irrigation water overuse and high level of soil salinity have curbed the agricultural productivity, adversely affected farmers' revenues, and threatened long-term sustainability of irri-gated farming in the HID. Nevertheless, opportunities still exist to improve the situation. Irrigation water allo-cation, salt accumulation and leaching, crop productivity and farming decisions are intrinsically connected and thus require taking a holistic approach to investigate into the interactions among all those factors and devise appropriate technological, management and policy interventions. Towards this goal, we develop an integrated hydro-agro-economic optimization model to reconcile agricultural net revenue, irrigation practices, and envi-ronmental sustainability in the HID. Positive Mathematical Programming is used for model calibration to ensure the model can replicate the base year observations of crop acreage, making the model suitable for evaluating alternative scenarios. Scenario analyses are conducted to analyze the effects of water supply reduction, reducing winter irrigation, water-saving irrigation, and crop commodity price change on optimal agricultural water management practices. Results show that water supply reduction without complementary measures increases land fallow, exacerbates soil salinization, and reduces net benefits. Winter irrigation can conserve soil moisture and increase the net salt leaching in the root zone, and a reduction in winter irrigation will incur a benefit loss to the HID. Water-saving irrigation can stabilize planting areas under water shortage but exacerbate soil saliniza-tion. Price increase of a cash crop, if it has a large area share, tends to crowd out grain crops growing in the same season. These results provide a holistic perspective and useful insights for water management and policy in the HID.
英文关键词	Semi -arid environment Irrigation Salinity Agriculture Water management Optimization Positive Mathematical Programming
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000909748500001
WOS关键词	SHALLOW-WATER TABLE ; AGRICULTURAL WATER ; SOIL SALINIZATION ; FOOD SECURITY ; SPRING WHEAT ; RIVER-BASIN ; GROUNDWATER DYNAMICS ; MODEL ; MANAGEMENT ; PRODUCTIVITY
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/2XILL650/395032
推荐引用方式 GB/T 7714	Cao, Zhaodan,Zhu, Tingju,Cai, Ximing. Hydro-agro-economic optimization for irrigated farming in an arid region: The Hetao Irrigation District, Inner Mongolia[J],2023,277.
APA	Cao, Zhaodan,Zhu, Tingju,&Cai, Ximing.(2023).Hydro-agro-economic optimization for irrigated farming in an arid region: The Hetao Irrigation District, Inner Mongolia.AGRICULTURAL WATER MANAGEMENT,277.
MLA	Cao, Zhaodan,et al."Hydro-agro-economic optimization for irrigated farming in an arid region: The Hetao Irrigation District, Inner Mongolia".AGRICULTURAL WATER MANAGEMENT 277(2023).