干旱区生态环境知识资源中心(Arid): Monitoring land sensitivity to desertification in Central Asia: Convergence or divergence?

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DOI	10.1016/j.scitotenv.2018.12.152
	Monitoring land sensitivity to desertification in Central Asia: Convergence or divergence?
	Jiang, Liangliang 1,2,3,4,5; Bao, Anming1,4,5 ; Jiapaer, Guli 1,4,5; Guo, Hao 1,2,3,4,5; Zheng, Guoxiong 1,2; Gafforov, Khusen 1,2,6; Kurban, Alishir 1,4,5; De Maeyer, Philippe 3,4,5
通讯作者	Bao, Anming
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2019
卷号	658 页码:669-683
英文摘要	In Central Asia, desertification risk is one of the main environmental and socioeconomic issues; thus, monitoring land sensitivity to desertification is an extremely urgent issue. In this study, the combination of convergence patterns and desertification risk is advanced from a technical perspective. Furthermore, the environmentally sensitive area index (ESAI) method was first utilized to monitor the risk of desertification in Central Asia. In the study, the spatial and temporal patterns of desertification risk were illustrated from 1992 to 2015 using fourteen indicators, including vegetation, climate, soil and land management quality. The ESAI spatial convergence across administrative subdivisions was explored for three time intervals: 1992-2000, 2000-2008 and 2008-2015. The results indicated that nearly 13.66% of the study area fell into the critical risk of desertification from 1992 to 2008. However, the risk of desertification has improved since 2008, with critical classifications decreasing by 19.70% in 2015. According to the mutation year detection in the ESAI, 25.89% of the pixels with mutation years from 1992 to 2000 were identified, and this value was higher than that during the other time periods. The convergence analysis revealed that the desertification risk for 1992-2000 tended to diverge with a positive convergence coefficient of 0.13 and converge over the 2000-2008 and 2008-2015 time periods with negative convergence coefficients of -0.534 and -0.268, respectively. According to the spatial convergence analysis, we found that the divergence pattems in northern Central Asia from 1992 to 2000 resulted from the effects of the Soviet Union collapse: cropland abandonment in northern Kazakhstan and rangeland abandonment in Tajikistan, Kyrgyzstan and eastern Kazakhstan. In contrast, most areas from 2000 to 2008 experienced increased sensitivity to desertification with the convergence pattern caused by decreased precipitation, especially in northern Central Asia. However, convergence patterns were found in most regions for 2008-2015 with regard to augmented precipitation, which resulted in decreased sensitivity to desertification. Moreover, the low sensitivity areas were more likely to converge under increased precipitation. In this region, the findings of our study suggested that spatial convergence and divergence acted as related predictors of climate change and human activities, respectively. Thus, the ESAI convergence analysis was considered to provide an early warning of potential desertification. (C) 2018 Elsevier B.V. All rights reserved.
英文关键词	Desertification risk Environmental sensitivity area index Convergence analysis Climate change Human activities
类型	Article
语种	英语
国家	Peoples R China ; Belgium ; Uzbekistan
收录类别	SCI-E ; SSCI
WOS记录号	WOS:000456175700064
WOS关键词	CLIMATE-CHANGE ; VEGETATION GROWTH ; QUANTITATIVE ASSESSMENT ; DEGRADATION ; DYNAMICS ; SOUTHERN ; PRECIPITATION ; RESPONSES ; DROUGHT ; IMPACTS
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/218648
作者单位	1.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi 830011, Peoples R China; 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 3.Univ Ghent, Dept Geog, B-9000 Ghent, Belgium; 4.Sinobelgian Joint Lab Geoinformat, Urumqi 830011, Peoples R China; 5.Sinobelgian Joint Lab Geoinformat, B-9000 Ghent, Belgium; 6.Res Inst Irrigat & Water Problems, Tashkent 100187, Uzbekistan
推荐引用方式 GB/T 7714	Jiang, Liangliang,Bao, Anming,Jiapaer, Guli,et al. Monitoring land sensitivity to desertification in Central Asia: Convergence or divergence?[J]. 中国科学院新疆生态与地理研究所,2019,658:669-683.
APA	Jiang, Liangliang.,Bao, Anming.,Jiapaer, Guli.,Guo, Hao.,Zheng, Guoxiong.,...&De Maeyer, Philippe.(2019).Monitoring land sensitivity to desertification in Central Asia: Convergence or divergence?.SCIENCE OF THE TOTAL ENVIRONMENT,658,669-683.
MLA	Jiang, Liangliang,et al."Monitoring land sensitivity to desertification in Central Asia: Convergence or divergence?".SCIENCE OF THE TOTAL ENVIRONMENT 658(2019):669-683.