Effects of shrubs on soil nutrients and enzymatic activities over a 0-100 cm soil profile in the desert-loess transition zone

doi:10.1016/j.catena.2018.11.031

	Effects of shrubs on soil nutrients and enzymatic activities over a 0-100 cm soil profile in the desert-loess transition zone
	Yao, Yufei 1,2,3,6; Shao, Mingan 1,2,3,4; Fu, Xiaoli 4; Wang, Xiang 5; Wei, Xiaorong 1,2,3
刊名	CATENA
	2019-03-01
卷号	174 页码:362-370
关键词	Shrub Fertile islands Plant species Soil depth
ISSN号	0341-8162
DOI	10.1016/j.catena.2018.11.031
通讯作者	Wei, Xiaorong(xrwei78@163.com)
英文摘要	The creation of "fertile islands" beneath shrubs in dryland ecosystems has been widely reported worldwide and is the major factor influencing ecosystem structure and function. However, studies investigating whether and how shrubs affect soil biogeochemical cycles in deep soil layers are relatively limited. In this study, we examined the vertical distribution of the soil nutrient contents and enzymatic activities at the 0-100 cm soil profiles beneath three common xerophytic shrubs (Artemisia ordosica, Caragana korshinskii and Salix psammophila) and in interspace bare soils in a transition zone from desert to loess in the north of China. The soil metrics included the contents of organic carbon, total nitrogen, total phosphorus, nitrate and ammonium nitrogen, available phosphorus and potassium, and the activities of saccharase, urease, alkaline phosphatase and amylase. We found that the contents of organic carbon, total nitrogen and available potassium, and the activities of saccharase, urease and alkaline phosphatase were higher in the soils beneath shrubs than in the interspace bare areas, but these differences only occurred in the 0-10 cm soil profile but not in the soils below the depth of 10 cm. The soil quality index was consistently improved among the three shrub species in the topsoil. In addition, the soil nutrients were positively correlated with enzymatic activities, and the organic carbon content explained approximately 50% of the variations in the enzymatic activities. Collectively, our results demonstrated that the establishment of xerophytic shrubs improved the soil chemical and biological conditions in the desert-loess transition region, and the effect was restricted to the 0-10 cm soil layer.
资助项目	National Natural Science Foundation of China[41571130082] ; National Natural Science Foundation of China[41571296] ; National Natural Science Foundation of China[41622105] ; Chinese Academy of Sciences[QYZDB-SSW-DQC039] ; Northwest AF University[2452017028] ; Special-Funds of Scientific Research Programs of State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau[A314021403-Q5]
WOS关键词	ORGANIC-CARBON ; SPATIAL-PATTERNS ; MICROBIAL COMMUNITIES ; FUNCTIONAL TRAITS ; FERTILE ISLAND ; FINE-ROOT ; LAND-USE ; NITROGEN ; DECOMPOSITION ; DESERTIFICATION
WOS研究方向	Geology ; Agriculture ; Water Resources
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000456754600034
资助机构	National Natural Science Foundation of China ; Chinese Academy of Sciences ; Northwest AF University ; Special-Funds of Scientific Research Programs of State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/50597]
专题	中国科学院地理科学与资源研究所
通讯作者	Wei, Xiaorong
作者单位	1.Chinese Acad Sci, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 2.Minist Water Resources, Yangling 712100, Shaanxi, Peoples R China 3.Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 5.Univ Minnesota, Dept Soil Water & Climate, St Paul, MN 55108 USA 6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Yao, Yufei,Shao, Mingan,Fu, Xiaoli,et al. Effects of shrubs on soil nutrients and enzymatic activities over a 0-100 cm soil profile in the desert-loess transition zone[J]. CATENA,2019,174:362-370.
APA	Yao, Yufei,Shao, Mingan,Fu, Xiaoli,Wang, Xiang,&Wei, Xiaorong.(2019).Effects of shrubs on soil nutrients and enzymatic activities over a 0-100 cm soil profile in the desert-loess transition zone.CATENA,174,362-370.
MLA	Yao, Yufei,et al."Effects of shrubs on soil nutrients and enzymatic activities over a 0-100 cm soil profile in the desert-loess transition zone".CATENA 174(2019):362-370.