气候变化领域集成服务门户(CCPortal): Desertification affecting the Tibetan Plateau between 1971-2015: viewed from a climate perspective

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DOI	10.1002/ldr.3575
	Desertification affecting the Tibetan Plateau between 1971-2015: viewed from a climate perspective
	Cuo, Lan; Zhang, Yongxin; Wu, Yongqiu; Hou, Mei
通讯作者	Cuo, L (通讯作者)
发表日期	2020
ISSN	1085-3278
EISSN	1099-145X
起始页码	1956
结束页码	1968
卷号	31 期号:15
英文摘要	Our understanding of desertification on the Tibetan Plateau (TP) is limited. This study aims to fill the knowledge gap by examining desertification and the underlying climatic factors between 1971-2015 on the TP using a dynamic vegetation model and observation-based gridded climate data. Four factors including precipitation, days with above the threshold wind, simulated vegetation fractional plant coverage and soil moisture (SM) in 0-40 cm depth are employed for the spatiotemporal desertification analyses. Simulated plant functional types and SM are evaluated against the observations. By referencing the existing desertification maps in 1977, 1990, 2000, 2010, and 2015, the thresholds of the four factors are determined, and the temporally continuous annual areas of four types of desertification are reconstructed. The Qaidam Basin and Ngari Desert are successfully identified by the above approach. The reduction of total desertification since 2000 is also consistent with national desertification surveys. Climate variation exerts the dominant control on desertification on the TP where population density is low, of which precipitation is the most important climate factor. Moderate but consecutive drought events correspond to the greatest desertification. During 1971-2015, the average total desertification area is 418,329 km(2); among the four types of desertification, moderate desertification occupies the largest area (253,088 km(2)), followed by light desertification (105,583 km(2)) and extremely severe desertification (30,019 km(2)); severe desertification has the least coverage (17,597 km(2)). This approach can also be applied in the other regions given sufficient meteorological and ecological data.
关键词	SOIL-MOISTURE AEOLIAN DESERTIFICATION CENTRAL-ASIA TEMPERATURE SATELLITE ECOSYSTEM DYNAMICS IMPACT CARBON BASIN
英文关键词	climate variation and long-term change; desertification; modeling; the Tibetan Plateau; underlying factors
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
WOS类目	Environmental Sciences ; Soil Science
WOS记录号	WOS:000561950400001
来源期刊	LAND DEGRADATION & DEVELOPMENT
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259907
推荐引用方式 GB/T 7714	Cuo, Lan,Zhang, Yongxin,Wu, Yongqiu,et al. Desertification affecting the Tibetan Plateau between 1971-2015: viewed from a climate perspective[J]. 中国科学院青藏高原研究所,2020,31(15).
APA	Cuo, Lan,Zhang, Yongxin,Wu, Yongqiu,&Hou, Mei.(2020).Desertification affecting the Tibetan Plateau between 1971-2015: viewed from a climate perspective.LAND DEGRADATION & DEVELOPMENT,31(15).
MLA	Cuo, Lan,et al."Desertification affecting the Tibetan Plateau between 1971-2015: viewed from a climate perspective".LAND DEGRADATION & DEVELOPMENT 31.15(2020).