干旱区生态环境知识资源中心(Arid): Large scale environmental drivers of biocrust distribution and development across a sandy desert in China

Arid

DOI	10.1016/j.catena.2020.105137
	Large scale environmental drivers of biocrust distribution and development across a sandy desert in China
	Ju, Meng-Chen; Zhang, Ting-Long; Li, Xin-Kai; Li, Bing-Yin; Li, Yi-Ping; Liu, Qiu-Yu; Wang, Qing-Xuan; Bu, Chong-Feng
通讯作者	Bu, CF (corresponding author), Xinong Rd 26, Yangling 712100, Shaanxi, Peoples R China.
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2021
卷号	200
英文摘要	Biological soil crusts (biocrusts) are widely distributed in arid and semiarid ecosystems and provide critical ecological functions. Understanding how biocrusts change across broad regional scales allows us to manage them more effectively under changing climates and land-use pressures. Based on field surveys, we used boosted regression trees and correlation analysis to examine the changes in cover, distribution and developmental characteristics of biocrust mosses and cyanobacteria, and environmental factors at 40 sites in the Mu Us Sandland in northwestern China. We found that higher elevation sites (similar to 1342 m) were the most suitable for biocrust distribution, and preferred sites were characterized by greater vegetation cover (>43%), values of the aridity index (>0.34), slope (>6.61, soil pH (>8.85) and soil organic carbon (>0.50%). Increasing levels of disturbance (>1.15 kg dung ha(-1)) suppressed biocrusts. Moss crust development (e.g., biomass, thickness, bulk density) was significantly positively related to vegetation cover, aridity index, and soil organic carbon, and moss crusts tended to prefer shady shrub communities at low elevations. Shady and steep (5 - 15 degrees) slopes and higher soil nutrient contents were positively correlated with cyanobacteria development. Reduced rainfall and increasing disturbance intensity would reduce the distribution and development of biocrusts. Our study provides a basis for informed decision making about how to manage moss and cyanobacterial crusts in the Mu Us Sandland as the region becomes hotter and drier.
英文关键词	Regional scale Environmental factors Biological soil crusts Cover distribution Development characteristics
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000620777400009
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/349797
作者单位	[Ju, Meng-Chen; Li, Bing-Yin; Li, Yi-Ping; Bu, Chong-Feng] Northwest Agr & Forestry Univ, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China; [Zhang, Ting-Long; Liu, Qiu-Yu] Northwest Agr & Forestry Univ, Coll Nat Resources & Environm, Yangling 712100, Shaanxi, Peoples R China; [Li, Xin-Kai; Wang, Qing-Xuan; Bu, Chong-Feng] CAS&MWR, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China; [Li, Xin-Kai; Wang, Qing-Xuan] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Ju, Meng-Chen,Zhang, Ting-Long,Li, Xin-Kai,et al. Large scale environmental drivers of biocrust distribution and development across a sandy desert in China[J]. 西北农林科技大学,2021,200.
APA	Ju, Meng-Chen.,Zhang, Ting-Long.,Li, Xin-Kai.,Li, Bing-Yin.,Li, Yi-Ping.,...&Bu, Chong-Feng.(2021).Large scale environmental drivers of biocrust distribution and development across a sandy desert in China.CATENA,200.
MLA	Ju, Meng-Chen,et al."Large scale environmental drivers of biocrust distribution and development across a sandy desert in China".CATENA 200(2021).