干旱区生态环境知识资源中心(Arid): Effects of planting Caragana shrubs on soil nutrients and stoichiometries in desert steppe of Northwest China

Arid

DOI	10.1016/j.catena.2019.104213
	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
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2019
卷号	183
英文摘要	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.
英文关键词	Caragana shrubs Desert steppe Soil nutrients Soil stoichiometries
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000488417700020
WOS关键词	HORQIN SANDY LAND ; N-P STOICHIOMETRY ; MICROBIOLOGICAL PROPERTIES ; MICROPHYLLA PLANTATIONS ; SEEDLING ESTABLISHMENT ; ARTHROPOD COMMUNITIES ; AGE SEQUENCE ; FERTILITY ; ISLANDS ; DESERTIFICATION
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
EI主题词	2019-12-01
来源机构	中国科学院地球环境研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/311453
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]. 中国科学院地球环境研究所,2019,183.
APA	Yang, Yang,&Liu, Bingru.(2019).Effects of planting Caragana shrubs on soil nutrients and stoichiometries in desert steppe of Northwest China.CATENA,183.
MLA	Yang, Yang,et al."Effects of planting Caragana shrubs on soil nutrients and stoichiometries in desert steppe of Northwest China".CATENA 183(2019).