干旱区生态环境知识资源中心(Arid): Using soil minerals to investigate desert expansion in northern Shaanxi Province, China

Arid

DOI	10.1016/j.aeolia.2020.100577
	Using soil minerals to investigate desert expansion in northern Shaanxi Province, China
	Qi, Yanbing 1; Chen, Tao 1; Shukla, Manoj K.2; Chang, Qingrui 1
通讯作者	Qi, Yanbing ; Chang, Qingrui
来源期刊	AEOLIAN RESEARCH
ISSN	1875-9637
EISSN	2212-1684
出版年	2020
卷号	43
英文摘要	The transformation of fixed dunes into shifting dunes and the diverse feedback loop that drives the transformation process has been observed in various dune systems around the world. However, the precise details of how environmental controls influence the dune transformation and stabilisation remain poorly understood. Comprehensive understanding of processes and mechanisms behind newly formed shifting dunes is essential to identify niche targeting measures for desert expansion control. On the basis of measured soil minerals from expanded desert land in northern Shaanxi province, China, desert expansion mechanisms identified were associated with dune sand migration, loess decline, and stabilized dune reactivation. The dune sand migration-associated desertification occurred when a horizon of shifting sand dunes was deposited on top of the loess soil of degraded farmland due to the prevailing windy conditions in this region, and it can be identified by the significant difference in soil minerals (SiO2, Al2O3, Fe2O3, CaO, MgO, TiO2, MnO, K2O, and P2O5) between the sand dune and the loess soil. Loess decline-associated desertification mainly occurred in farmlands in the southern part of the desert area by wind erosion, and it can be identified by the nonsignificant difference in soil minerals between the sand dune and the loess soil. Stabilized dune reactivation-associated desertification occurred due to damage to the soil biological crusts by human activities, and it can be identified by the nonsignificant difference in soil minerals between the sand dune and the stabilized dune. The dominant causes of desert expansion identified were heavy winds and intensive human activities.
英文关键词	Soil minerals Desert expansion Dune sand migration Loess decline Stabilized dune reactivation
类型	Article
语种	英语
国家	Peoples R China ; USA
收录类别	SCI-E
WOS记录号	WOS:000526121300007
WOS关键词	LAND-USE ; DESERTIFICATION PROCESSES ; AEOLIAN DESERTIFICATION ; PARABOLIC DUNES ; ATACAMA DESERT ; CLIMATE-CHANGE ; WIND EROSION ; BARCHAN ; CRUSTS ; GEOCHEMISTRY
WOS类目	Geography, Physical
WOS研究方向	Physical Geography
来源机构	西北农林科技大学 ; New Mexico State University
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/313906
作者单位	1.Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Shaanxi, Peoples R China; 2.New Mexico State Univ, Coll Agr Consumer & Environm Sci, Dept Plant & Environm Sci, Las Cruces, NM 88003 USA
推荐引用方式 GB/T 7714	Qi, Yanbing,Chen, Tao,Shukla, Manoj K.,et al. Using soil minerals to investigate desert expansion in northern Shaanxi Province, China[J]. 西北农林科技大学, New Mexico State University,2020,43.
APA	Qi, Yanbing,Chen, Tao,Shukla, Manoj K.,&Chang, Qingrui.(2020).Using soil minerals to investigate desert expansion in northern Shaanxi Province, China.AEOLIAN RESEARCH,43.
MLA	Qi, Yanbing,et al."Using soil minerals to investigate desert expansion in northern Shaanxi Province, China".AEOLIAN RESEARCH 43(2020).