气候变化领域集成服务门户(CCPortal): Landscape pattern changes across alpine shrub meadows gradient in warm-season pastures on the Qinghai-Tibet Plateau

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DOI	10.1016/j.ecocom.2022.100979
	Landscape pattern changes across alpine shrub meadows gradient in warm-season pastures on the Qinghai-Tibet Plateau
	Qian, Dawen; Li, Qian; Fan, Bo; Guo, Xiaowei; Du, Yangong; Cao, Guangmin
通讯作者	Qian, DW (通讯作者)，Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Cold Reg Restorat Ecol, Xining, Qinghai, Peoples R China. ; Qian, DW (通讯作者)，23 Xinning Rd, Xining 810008, Qinghai, Peoples R China.
发表日期	2022
ISSN	1476-945X
EISSN	1476-9840
卷号	49
英文摘要	Grassland degradation has been one of the major ecological concerns on the Qinghai-Tibet Plateau (QTP) in recent years, but the degradation of alpine shrub meadows, and in particular the changes in its surface landscape pattern, has been less well assessed. This study selected a warm-season pasture on the QTP as a study area, and used an unmanned aerial vehicle (UAV) to collect aerial photographs along the degradation gradient from late June to early July 2018. We then classified the surface landscape as alpine shrub, alpine meadow, bare soil and plateau pika hole and analyzed the landscape pattern changes at different degradation levels. The results showed that the alpine shrub and alpine meadow dominated landscape degraded to a pattern of alpine meadow and bare soil dominance and pika hole pervasiveness, during which vegetation cover declined and the overall landscape pattern tended to fragment. Landscape pattern characteristics related to the area, density, connectivity and boundaries respond more clearly to the shrub degradation, with moderate degradation being the key stage at which the surface landscape pattern changes dramatically. Our study demonstrates a potential application of UAV technology in the study of grassland degradation. Future research should focus on the status, mechanisms and ecological effects of alpine shrub meadows degradation and the quantitative relationships between surface landscape patterns and ecological functions.
关键词	SOIL ORGANIC-CARBON GRASSLAND DEGRADATION ECOSYSTEM CARBON RANGELAND DEGRADATION ENCROACHMENT PATCHINESS CONSEQUENCES CONNECTIVITY PRODUCTIVITY BIODIVERSITY
英文关键词	Alpine shrub meadows; Landscape pattern; UAV; degradation gradient; Qinghai-Tibet Plateau
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Ecology
WOS记录号	WOS:000777817500002
来源期刊	ECOLOGICAL COMPLEXITY
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/253933
作者单位	[Qian, Dawen; Li, Qian; Fan, Bo; Guo, Xiaowei; Du, Yangong; Cao, Guangmin] Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Cold Reg Restorat Ecol, Xining, Qinghai, Peoples R China; [Qian, Dawen; Li, Qian; Fan, Bo; Guo, Xiaowei; Du, Yangong; Cao, Guangmin] 23 Xinning Rd, Xining 810008, Qinghai, Peoples R China
推荐引用方式 GB/T 7714	Qian, Dawen,Li, Qian,Fan, Bo,et al. Landscape pattern changes across alpine shrub meadows gradient in warm-season pastures on the Qinghai-Tibet Plateau[J]. 中国科学院西北生态环境资源研究院,2022,49.
APA	Qian, Dawen,Li, Qian,Fan, Bo,Guo, Xiaowei,Du, Yangong,&Cao, Guangmin.(2022).Landscape pattern changes across alpine shrub meadows gradient in warm-season pastures on the Qinghai-Tibet Plateau.ECOLOGICAL COMPLEXITY,49.
MLA	Qian, Dawen,et al."Landscape pattern changes across alpine shrub meadows gradient in warm-season pastures on the Qinghai-Tibet Plateau".ECOLOGICAL COMPLEXITY 49(2022).