Biological soil crusts decrease erodibility by modifying inherent soil properties on the Loess Plateau, China

doi:10.1016/j.soilbio.2016.11.009

CORC > 水土保持研究所 > 中国科学院水利部水土保持研究所 > 水保所科研产出--SCI > 2017--SCI

	Biological soil crusts decrease erodibility by modifying inherent soil properties on the Loess Plateau, China
	Zhao, Yunge 2,3; Zhao, YG (reprint author), Northwest A&F Univ, Inst Soil & Water Conservat, 26 Xinong Rd, Yangling 712100, Shaanxi, Peoples R China.; Gao, Liqian 2,3; Bowker, Matthew A.4; Xu, Mingxiang 2,3; Sun, Hui 1; Tuo, Dengfeng 1
刊名	SOIL BIOLOGY & BIOCHEMISTRY
	2017
卷号	105 页码:49-58
关键词	Moss Cyanobacteria Soil Erosion k Value Soil Organic Matter Soil Texture
ISSN号	0038-0717
DOI	10.1016/j.soilbio.2016.11.009
文献子类	Article
英文摘要	Soil erosion and subsequent land degradation contributed to societal collapse in the past and are a leading cause of desertification in arid and semi-arid regions. Biological soil crusts (biocrusts) are ubiquitous living covers in many arid and semiarid ecosystems that have an important role in soil stabilization and erosion prevention. The "Grain for Green" ecological project improved vegetation recovery, and led to an extensive development of biocrusts across the Loess Plateau region in China, one of the most eroded regions in the world. The expansion of biocrusts was instrumental in reducing soil loss in a very large, severely eroded region of the Loess Plateau. We hypothesized that development of biocrusts would change soil organic matter (SOM) and soil particle size distribution (PSD), thereby reducing soil erodibility and soil loss. We sampled 56 sites that were passively revegetated grasslands on former croplands and 3 bare soil sites in the Loess Plateau region, and used the erosion productivity impact calculator (EPIC) model combined with simulated rainfall to test our assumption. The PSD and SOM content varied significantly among biocrust types and successional stages. The SOM content was 4 times higher in moss dominated biocrust and 1.5 times greater in cyanobacterially dominated biocrust than bare soil. More fine-particles (< 0.01 mm) and fewer coarse-particles (0.05-0.25 mm) were present in biocrusts than in bare soil. Modeled soil erodibility decreased significantly as biocrust biomass increased, mainly due to increase in SOM content, reducing the predicted soil loss by up to 90%. Finally, the prevalence of moss biocrust was a better predictor of soil erodibility than cyanobacteria in the Loess Plateau region. We conclude that biocrusts were a decisive factor for the initial reduction of soil erosion, which must be considered explicitly in models that aim to predict and manage soil loss on the Loess Plateau. (C) 2016 Elsevier Ltd. All rights reserved.
学科主题	Agriculture
URL标识	查看原文
出版地	OXFORD
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000392788600008
资助机构	National Natural Science Foundation of China [41571268, 41271298]; "Western Light" Project of the Chinese Academy of Sciences ; National Natural Science Foundation of China [41571268, 41271298]; "Western Light" Project of the Chinese Academy of Sciences ; National Natural Science Foundation of China [41571268, 41271298]; "Western Light" Project of the Chinese Academy of Sciences ; National Natural Science Foundation of China [41571268, 41271298]; "Western Light" Project of the Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.iswc.ac.cn/handle/361005/8044]
专题	水保所科研产出--SCI_2017--SCI
通讯作者	Zhao, YG (reprint author), Northwest A&F Univ, Inst Soil & Water Conservat, 26 Xinong Rd, Yangling 712100, Shaanxi, Peoples R China.
作者单位	1.Northwest A&F Univ, Inst Soil & Water Conservat, 26 Xinong Rd, Yangling 712100, Shaanxi, Peoples R China 2.Minist Water Resources, Yangling 712100, Shaanxi, Peoples R China 3.Chinese Acad Sci, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess, Yangling 712100, Shaanxi, Peoples R China 4.No Arizona Univ, Sch Forestry, 200 East Pine Knoll Dr, Flagstaff, AZ 86011 USA
推荐引用方式 GB/T 7714	Zhao, Yunge,Zhao, YG ,Gao, Liqian,et al. Biological soil crusts decrease erodibility by modifying inherent soil properties on the Loess Plateau, China[J]. SOIL BIOLOGY & BIOCHEMISTRY,2017,105:49-58.
APA	Zhao, Yunge.,Zhao, YG .,Gao, Liqian.,Bowker, Matthew A..,Xu, Mingxiang.,...&Tuo, Dengfeng.(2017).Biological soil crusts decrease erodibility by modifying inherent soil properties on the Loess Plateau, China.SOIL BIOLOGY & BIOCHEMISTRY,105,49-58.
MLA	Zhao, Yunge,et al."Biological soil crusts decrease erodibility by modifying inherent soil properties on the Loess Plateau, China".SOIL BIOLOGY & BIOCHEMISTRY 105(2017):49-58.