气候变化领域集成服务门户(CCPortal): Characteristics and controlling factors of alpine grassland vegetation patch patterns on the central Qinghai-Tibetan plateau

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DOI	10.1016/j.ecolind.2021.107570
	Characteristics and controlling factors of alpine grassland vegetation patch patterns on the central Qinghai-Tibetan plateau
	Zhang, Wei; Yi, Shuhua; Chen, Jianjun; Qin, Yu; Chang, Li; Sun, Yi; Donghui Shangguan
通讯作者	Yi, SH (通讯作者)，Nantong Univ, Inst Fragile Ecoenvironm, Sch Geog Sci, 999 Tongjing Rd, Nantong 226007, Jiangsu, Peoples R China.
发表日期	2021
ISSN	1470-160X
EISSN	1872-7034
卷号	125
英文摘要	Vegetation patch patterns, which are used as indicators of state, functionality, and catastrophic changes in the arid ecosystem, have received much attention. However, little is known about the controlling factors and indicators that underlie vegetation patch patterns in the alpine grassland ecosystem. Here, we firstly studied characteristics of vegetation patch patterns with aerial photography by using an unmanned aerial vehicle and evaluated the vegetation patch-size distribution with power law (PL) and truncated power law (TPL) models on the central part of the Qinghai-Tibetan Plateau (QTP). We then investigated the effects of environmental factors and biotic disturbances on vegetation patch patterns. The results showed that (1) there were four typical vegetation patch patterns, i.e. spot, stripe, sheet, and uniform patterns; (2) soil water content and air temperature were major environmental factors affecting vegetation patch patterns; (3) biotic disturbance of plateau pika (Ochotona curzoniae) affected vegetation patch patterns by changing the number, area, and connectivity of vegetation patches; and (4) vegetation patch-size distribution parameters were significantly related to soil hydrothermal variables (P < 0.01). We concluded that the development of alpine vegetation patch patterns was controlled by soil hydrothermal conditions and plateau pika's disturbance. We also proposed that gamma (TPL-PL) (difference between absolute values of slopes of TPL and PL curve fits) could serve as an effective indicator for monitoring alpine grassland conditions, and preventing patchiness was a critical task for the alpine ecosystem management and restoration.
关键词	ECOSYSTEM CARBON NORTHERN TIBET SEMIARID BASIN SOIL-MOISTURE DESERTIFICATION RESPONSES MEADOW PIKA DYNAMICS STEPPE
英文关键词	Unmanned aerial vehicle; Landscape indices; Vegetation patch patterns; Plateau pika's disturbance; Soil water content; Soil temperature
语种	英语
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
WOS类目	Biodiversity Conservation ; Environmental Sciences
WOS记录号	WOS:000637787000005
来源期刊	ECOLOGICAL INDICATORS
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/254913
作者单位	[Zhang, Wei; Qin, Yu; Chang, Li; Donghui Shangguan] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, 320 Donggang West Rd, Lanzhou 730000, Peoples R China; [Zhang, Wei] Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China; [Yi, Shuhua; Sun, Yi] Nantong Univ, Inst Fragile Ecoenvironm, Sch Geog Sci, 999 Tongjing Rd, Nantong 226007, Jiangsu, Peoples R China; [Chen, Jianjun] Guilin Univ Technol, Coll Geomat & Geoinformat, 12 Jiangan Rd, Guilin 541004, Peoples R China; [Chang, Li] Lanzhou City Univ, Coll Geog & Environm Engn, Lanzhou 730070, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Wei,Yi, Shuhua,Chen, Jianjun,et al. Characteristics and controlling factors of alpine grassland vegetation patch patterns on the central Qinghai-Tibetan plateau[J]. 中国科学院西北生态环境资源研究院,2021,125.
APA	Zhang, Wei.,Yi, Shuhua.,Chen, Jianjun.,Qin, Yu.,Chang, Li.,...&Donghui Shangguan.(2021).Characteristics and controlling factors of alpine grassland vegetation patch patterns on the central Qinghai-Tibetan plateau.ECOLOGICAL INDICATORS,125.
MLA	Zhang, Wei,et al."Characteristics and controlling factors of alpine grassland vegetation patch patterns on the central Qinghai-Tibetan plateau".ECOLOGICAL INDICATORS 125(2021).