Effects of planting Caragana shrubs on soil nutrients and stoichiometries in desert steppe of Northwest China

doi:10.1016/j.catena.2019.104213

IEECAS OpenIR > 生态环境研究室

	Effects of planting Caragana shrubs on soil nutrients and stoichiometries in desert steppe of Northwest China
	Yang, Yang 1,2; Liu, Bingru 3
通讯作者	Liu, Bingru(bingru.liu@163.com)
	2019-12-01
发表期刊	CATENA
ISSN	0341-8162
卷号	183 页码:10
摘要	Caragana korshinskii shrubs are widely planted in desert steppe of Northwest China to mitigate desert encroachment. Soil nutrients and stoichiometries reflect the cycling of soil organic matter in ecosystems. Thus, there is a dynamic balance between soil nutrients and stoichiometries due to the establishment of Caragana shrubs in this region. Here, soil nutrients and stoichiometries were characterized with different planting densities of Caragana shrubs (HD, high density, 4530 bundle/hm(2); MD, mid density, 3670 bundle/hm(2); LD, low density, 2560 bundle/hm(2)) to explore how the planting of Caragana shrubs affects soil nutrients and stoichiometries in desert steppe of Northwest China. The results showed that soil available phosphorus (AP) and soil total phosphorus (TP) had no significant differences between LD and control (CK) (p > 0.05). Further, soil organic carbon (SOC), soil total nitrogen (TN), and soil alkali-hydrolyzable nitrogen (AN) followed the order of HD > MD > LD > CK, indicating that the planting of Caragana shrubs had an increasing effect to soil nutrients, with the exception of AP and TP (p < 0.05), and the increasing effect gradually died down along soil profile. In addition, the planting of Caragana shrubs significantly affected soil stoichiometries. Specifically, soil N/P and C/P gradually increased with soil depth with fluctuation, while soil C/N decreased with soil depth. Besides, soil water content (SW), AP, AN, and SOC had strong positive effects on soil C/N, while they had strong negative effects on soil C/P and N/P, highlighting the importance of soil properties in determining soil stoichiometries. Overall, our results indicated that planting Caragana shrubs can improve levels of soil nutrients, and HD can be considered the optimal planting density for vegetation restoration in desert steppe. Nevertheless, the threshold of the planting density most favorable for the special climates must be identified through further study in this region.
关键词	Caragana shrubs Desert steppe Soil nutrients Soil stoichiometries
DOI	10.1016/j.catena.2019.104213
关键词[WOS]	HORQIN SANDY LAND ; N-P STOICHIOMETRY ; MICROBIOLOGICAL PROPERTIES ; MICROPHYLLA PLANTATIONS ; SEEDLING ESTABLISHMENT ; ARTHROPOD COMMUNITIES ; AGE SEQUENCE ; FERTILITY ; ISLANDS ; DESERTIFICATION
收录类别	SCI ; SCI
语种	英语
资助项目	National Natural Science Foundation of China[31660168] ; National Natural Science Foundation of China[31860158] ; First Class Discipline Construction Project in Colleges and Universities of Ningxia Hui Autonomous Region[NXYLXK2017B06] ; Foundation for Excellent Youth Scholars of Northwest Institute of Eco-Environment and Resources, CAS[Y851D01001]
WOS研究方向	Geology ; Agriculture ; Water Resources
项目资助者	National Natural Science Foundation of China ; First Class Discipline Construction Project in Colleges and Universities of Ningxia Hui Autonomous Region ; Foundation for Excellent Youth Scholars of Northwest Institute of Eco-Environment and Resources, CAS
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS记录号	WOS:000488417700020
出版者	ELSEVIER
引用统计	被引频次：31[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/361006/13287
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	Liu, Bingru
作者单位	1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Shaanxi, Peoples R China 2.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Shaanxi, Peoples R China 3.Ningxia Univ, Minist Educ, Key Lab Restorat & Reconstruct Degraded Ecosyst N, Yinchuan 750021, Peoples R China
推荐引用方式 GB/T 7714	Yang, Yang,Liu, Bingru. Effects of planting Caragana shrubs on soil nutrients and stoichiometries in desert steppe of Northwest China[J]. CATENA,2019,183:10.
APA	Yang, Yang,&Liu, Bingru.(2019).Effects of planting Caragana shrubs on soil nutrients and stoichiometries in desert steppe of Northwest China.CATENA,183,10.
MLA	Yang, Yang,et al."Effects of planting Caragana shrubs on soil nutrients and stoichiometries in desert steppe of Northwest China".CATENA 183(2019):10.