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China's progress towards sustainable land degradation control: Insights from the northwest arid regions
Jiang, Chong1,2,3; Liu, Junguo1,2; Zhang, Haiyan4; Zhang, Zhidong1,2; Wang, Dewang5
2019-02-01
Source PublicationECOLOGICAL ENGINEERING
ISSN0925-8574
Volume127Pages:75-87
Corresponding AuthorLiu, Junguo(junguo.liu@gmail.com)
AbstractSoil erosion is a widespread environmental problem, which threatens the environmental sustainability. The northwest arid region (NAR) in China is known as one of the most severe soil loss in the world that suffering from wind erosion. Based on the Revised Wind Erosion Equation (RWEQ), the spatio-temporal change of wind erosion was identified, and the underlying drivers and influencing factors of soil erosion process were investigated. In addition, the implications of constraint effects in soil erosion control were discussed. The results showed that the wind erosion from 1990 to 2013 was substantially lessened, and the government-aided desertification prevention and control programs, as well as increasing precipitation and decreasing wind speed might have contributed to these trends. The constraint line analyses indicated that the vegetation cover had nonlinear and threshold effects on soil erosion through constraining the water condition (precipitation). Specifically, when the precipitation is below the threshold (approximately 50-100 mm yr(-1) in the NAR), the precipitation (water condition) is not sufficient to maintain a good vegetation cover (about 20-40%), therefore the vegetation cannot efficiently prevent wind erosion. However, once the precipitation exceeds this threshold, the vegetation's sand retention function will enhance and thereby reducing soil loss substantially. Vegetation cover has a lower and an upper threshold for controlling wind erosion. A plant cover lower than 10% does little to reduce wind velocity at the soil surface. The effect of vegetation on reducing wind erosion basically reaches the maximum when plant cover is 40% or above. The constraint effects of precipitation on vegetation cover in the arid region should be considered to improve the efficiency of afforestation and reforestation efforts aiming at mitigating and preventing soil loss.
KeywordWind erosion Soil loss Climate change Ecological restoration Constraint effect
DOI10.1016/j.ecoleng.2018.11.014
WOS KeywordINNER MONGOLIA REACH ; WIND-EROSION RISK ; SOIL-EROSION ; YELLOW-RIVER ; LOESS PLATEAU ; CLIMATE VARIABILITY ; ECOSYSTEM SERVICES ; MODEL ; CONSERVATION ; TRANSPORT
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China (NSFC)[41625001] ; National Natural Science Foundation of China (NSFC)[4157A22] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA 20060402] ; Southern University of Science and Technology (SUSTech)[G01296001] ; Presidential Postdoctoral Fellowship
Funding OrganizationNational Natural Science Foundation of China (NSFC) ; Strategic Priority Research Program of Chinese Academy of Sciences ; Southern University of Science and Technology (SUSTech) ; Presidential Postdoctoral Fellowship
WOS Research AreaEnvironmental Sciences & Ecology ; Engineering
WOS SubjectEcology ; Engineering, Environmental ; Environmental Sciences
WOS IDWOS:000455632500008
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/50572
Collection中国科学院地理科学与资源研究所
Corresponding AuthorLiu, Junguo
Affiliation1.Southern Univ Sci & Technol, Sch Environm Sci & Engn, Guangdong Prov Key Lab Soil & Groundwater Pollut, Shenzhen 518055, Peoples R China
2.Southern Univ Sci & Technol, Sch Environm Sci & Engn, State Environm Protect Key Lab Integrated Surface, Shenzhen 518055, Peoples R China
3.Wuhan Univ, Sch Water Resources & Hydropower Engn, Wuhan 430072, Hubei, Peoples R China
4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
5.Chinese Res Inst Environm Sci, Beijing 100012, Peoples R China
Recommended Citation
GB/T 7714
Jiang, Chong,Liu, Junguo,Zhang, Haiyan,et al. China's progress towards sustainable land degradation control: Insights from the northwest arid regions[J]. ECOLOGICAL ENGINEERING,2019,127:75-87.
APA Jiang, Chong,Liu, Junguo,Zhang, Haiyan,Zhang, Zhidong,&Wang, Dewang.(2019).China's progress towards sustainable land degradation control: Insights from the northwest arid regions.ECOLOGICAL ENGINEERING,127,75-87.
MLA Jiang, Chong,et al."China's progress towards sustainable land degradation control: Insights from the northwest arid regions".ECOLOGICAL ENGINEERING 127(2019):75-87.
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