Landscape pattern changes across alpine shrub meadows gradient in warm-season pastures on the Qinghai-Tibet Plateau

	Landscape pattern changes across alpine shrub meadows gradient in warm-season pastures on the Qinghai-Tibet Plateau
	Qian, DW; Li, Q; Fan, B; Guo, XW; Du, YG; Cao, GM
刊名	ECOLOGICAL COMPLEXITY
	2022
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.
内容类型	期刊论文
源URL	[http://210.75.249.4/handle/363003/61279]
专题	西北高原生物研究所_中国科学院西北高原生物研究所
推荐引用方式 GB/T 7714	Qian, DW,Li, Q,Fan, B,et al. Landscape pattern changes across alpine shrub meadows gradient in warm-season pastures on the Qinghai-Tibet Plateau[J]. ECOLOGICAL COMPLEXITY,2022,49.
APA	Qian, DW,Li, Q,Fan, B,Guo, XW,Du, YG,&Cao, GM.(2022).Landscape pattern changes across alpine shrub meadows gradient in warm-season pastures on the Qinghai-Tibet Plateau.ECOLOGICAL COMPLEXITY,49.
MLA	Qian, DW,et al."Landscape pattern changes across alpine shrub meadows gradient in warm-season pastures on the Qinghai-Tibet Plateau".ECOLOGICAL COMPLEXITY 49(2022).