干旱区生态环境知识资源中心(Arid): Optimum allocation of salt discharge areas in land consolidation for irrigation districts by SahysMod

Arid

DOI	10.1016/j.agwat.2021.107060
	Optimum allocation of salt discharge areas in land consolidation for irrigation districts by SahysMod
	Huang, Yajie; Ma, Yibing; Zhang, Shiwen; Li, Zhen; Huang, Yuanfang
通讯作者	Huang, YF (corresponding author), China Agr Univ, Coll Land Sci & Technol, Minist Agr & Rural Affairs,Key Lab Agr Land Qual, Minist Nat Resources,Key Lab Arable Land Conserva, Beijing 100193, Peoples R China.
来源期刊	AGRICULTURAL WATER MANAGEMENT
ISSN	0378-3774
EISSN	1873-2283
出版年	2021
卷号	256
英文摘要	Soil salinization seriously threats the sustainability of agriculture in irrigation districts in arid and semi-arid regions. Unreasonable land consolidation aimed to increase cultivated land by developing uncultivated land makes soil salinization more serious in irrigation districts in the northwest of China. The uncultivated land serves as the salt discharge area, which is necessary for cultivated land with reasonable area, excavation depth, and spatial allocation. Therefore, this study aims to optimize the allocation of salt discharge areas based on soil water and salt movements simulated by SahysMod, choosing Yinchuan North Irrigation District as a case study in the northwest of China. Results showed that SahysMod was an effective tool to simulate soil water and salt movements between cultivated land and salt discharge areas. The parameters of optimum allocations, including excavation depths of salt discharge areas and area ratios of cultivated land to salt discharge areas, indicated the negative and positive effects of power functions on soil salinity of cultivated land, respectively. In this case study, an excavation depth of 0.3 m, the area ratio of 1.5, and salt discharge areas located in the southwest and northeast were more conducive and cost effective in terms of removing soil salinity of cultivated land. Moreover, the average soil salinity of cultivated land by optimum allocation was reduced to 1.2 dS/m compared with 2.7 dS/m by original allocation in 2027. It proved that the reasonable allocation of salt discharge areas was very important to address soil salinization of cultivated land and ensure its sustainable utilization, which provided a theoretical basis and technical guide for the allocation of salt discharge areas in land consolidation in the arid irrigation districts.
英文关键词	Soil water and salt movement Optimum allocation Land consolidation Irrigation district SahysMod
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000691196200007
WOS关键词	DRY DRAINAGE ; SOIL-SALINITY ; WATER ; MANAGEMENT ; SALINIZATION ; SODICITY ; SIMULATION ; BALANCES ; MODEL ; FIELD
WOS类目	Agronomy ; Water Resources
WOS研究方向	Agriculture ; Water Resources
来源机构	中国农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/362375
作者单位	[Huang, Yajie] Minist Ecol & Environm, Environm Dev Ctr, Beijing 100029, Peoples R China; [Huang, Yajie; Li, Zhen; Huang, Yuanfang] China Agr Univ, Coll Land Sci & Technol, Minist Agr & Rural Affairs,Key Lab Agr Land Qual, Minist Nat Resources,Key Lab Arable Land Conserva, Beijing 100193, Peoples R China; [Ma, Yibing] Macau Univ Sci & Technol, Macao Environm Res Inst, Macau 999078, Peoples R China; [Zhang, Shiwen] Anhui Univ Sci & Technol, Sch Earth & Environm, Huainan 232001, Peoples R China
推荐引用方式 GB/T 7714	Huang, Yajie,Ma, Yibing,Zhang, Shiwen,et al. Optimum allocation of salt discharge areas in land consolidation for irrigation districts by SahysMod[J]. 中国农业大学,2021,256.
APA	Huang, Yajie,Ma, Yibing,Zhang, Shiwen,Li, Zhen,&Huang, Yuanfang.(2021).Optimum allocation of salt discharge areas in land consolidation for irrigation districts by SahysMod.AGRICULTURAL WATER MANAGEMENT,256.
MLA	Huang, Yajie,et al."Optimum allocation of salt discharge areas in land consolidation for irrigation districts by SahysMod".AGRICULTURAL WATER MANAGEMENT 256(2021).