Soil quality assessment in different dammed-valley farmlands in the hilly-gully mountain areas of the northern Loess Plateau, China

doi:10.1007/s40333-021-0014-4

IEECAS OpenIR > 生态环境研究室

	Soil quality assessment in different dammed-valley farmlands in the hilly-gully mountain areas of the northern Loess Plateau, China
	Chen Shumin 1,2; Jin Zhao 1,3; Zhang Jing 4; Yang Siqi 1,5
通讯作者	Jin Zhao(jinzhao@ieecas.cn)
	2021-08-01
发表期刊	JOURNAL OF ARID LAND
ISSN	1674-6767
卷号	13 期号:8 页码:777-789
摘要	There are numerous valley farmlands on the Chinese Loess Plateau (CLP), where suffers from low soil quality and high risk of soil salinization due to the shallow groundwater table and poor drainage system. Currently, research on the evolution processes and mechanisms of soil quality and salinization in these dammed-valley farmlands on the CLP is still inadequately understood. In this study, three kinds of dammed-valley farmlands in the hilly-gully areas of the northern CLP were selected, and the status of soil quality and the impact factors of soil salinization were examined. The dammed-valley farmlands include the new farmland created by the project of Gully Land Consolidation, the 60-a farmland created by sedimentation from check dam, and the 400-a farmland created by sedimentation from an ancient landslide-dammed lake. Results showed that (1) the newly created farmland had the lowest soil quality in terms of soil bulk density, porosity, soil organic carbon and total nitrogen among the three kinds of dammed-valley farmlands; (2) soil salinization occurred in the middle and upper reaches of the new and 60-a valley farmlands, whereas no soil salinization was found in the 400-a valley farmland; and (3) soil salinization and low soil nutrient were determined to be the two important factors that impacted the soil quality of the valley farmlands in the hilly-gully mountain areas of the CLP. We conclude that the dammed-valley farmlands on the CLP have a high risk of soil salinization due to the shallow groundwater table, alkalinity of the loessial soil and local landform feature, thus resulting in the low soil quality of the valley farmlands. Therefore, strengthening drainage and decreasing groundwater table are extremely important to improve the soil quality of the valley farmlands and guarantee the sustainable development of the valley agriculture on the CLP.
关键词	dammed-valley farmland soil quality soil salinization groundwater Chinese Loess Plateau
DOI	10.1007/s40333-021-0014-4
关键词[WOS]	WATER ; SALINIZATION ; SALINITY ; GROUNDWATER ; DYNAMICS ; REGION
收录类别	SCI ; SCI
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000697364900002
出版者	SPRINGER HEIDELBERG
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/17017
专题	生态环境研究室第四纪科学与全球变化卓越创新中心
通讯作者	Jin Zhao
作者单位	1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China 4.Xian Inst Earth Environm Innovat, Xian 710061, Peoples R China 5.Beijing Normal Univ, Interdisciplinary Res Ctr Earth Sci Frontier IRCE, Beijing 100875, Peoples R China
推荐引用方式 GB/T 7714	Chen Shumin,Jin Zhao,Zhang Jing,et al. Soil quality assessment in different dammed-valley farmlands in the hilly-gully mountain areas of the northern Loess Plateau, China[J]. JOURNAL OF ARID LAND,2021,13(8):777-789.
APA	Chen Shumin,Jin Zhao,Zhang Jing,&Yang Siqi.(2021).Soil quality assessment in different dammed-valley farmlands in the hilly-gully mountain areas of the northern Loess Plateau, China.JOURNAL OF ARID LAND,13(8),777-789.
MLA	Chen Shumin,et al."Soil quality assessment in different dammed-valley farmlands in the hilly-gully mountain areas of the northern Loess Plateau, China".JOURNAL OF ARID LAND 13.8(2021):777-789.