气候变化领域集成服务门户(CCPortal): Grassland-type ecosystem stability in China differs under the influence of drought and wet events

CCPortal

DOI	10.1007/s40333-024-0098-8
	Grassland-type ecosystem stability in China differs under the influence of drought and wet events
	Cao, Wenyu; Bai, Jianjun; Yu, Leshan
发表日期	2024
ISSN	1674-6767
EISSN	2194-7783
起始页码	16
结束页码	5
卷号	16 期号:5
英文摘要	Ecological stability is a core issue in ecological research and holds significant implications for humanity. The increased frequency and intensity of drought and wet climate events resulting from climate change pose a major threat to global ecological stability. Variations in stability among different ecosystems have been confirmed, but it remains unclear whether there are differences in stability within the same terrestrial vegetation ecosystem under the influence of climate events in different directions and intensities. China's grassland ecosystem includes most grassland types and is a good choice for studying this issue. This study used the Standardized Precipitation Evapotranspiration Index-12 (SPEI-12) to identify the directions and intensities of different types of climate events, and based on Normalized Difference Vegetation Index (NDVI), calculated the resistance and resilience of different grassland types for 30 consecutive years from 1990 to 2019 (resistance and resilience are important indicators to measure stability). Based on a traditional regression model, standardized methods were integrated to analyze the impacts of the intensity and duration of drought and wet events on vegetation stability. The results showed that meadow steppe exhibited the highest stability, while alpine steppe and desert steppe had the lowest overall stability. The stability of typical steppe, alpine meadow, temperate meadow was at an intermediate level. Regarding the impact of the duration and intensity of climate events on vegetation ecosystem stability for the same grassland type, the resilience of desert steppe during drought was mainly affected by the duration. In contrast, the impact of intensity was not significant. However, alpine steppe was mainly affected by intensity in wet environments, and duration had no significant impact. Our conclusions can provide decision support for the future grassland ecosystem governance.
英文关键词	grassland ecosystem; stability; resistance; resilience; different climate types; drought climate event; wet climate event
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:001227833700002
来源期刊	JOURNAL OF ARID LAND
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/299272
作者单位	Shaanxi Normal University; Shaanxi Normal University
推荐引用方式 GB/T 7714	Cao, Wenyu,Bai, Jianjun,Yu, Leshan. Grassland-type ecosystem stability in China differs under the influence of drought and wet events[J],2024,16(5).
APA	Cao, Wenyu,Bai, Jianjun,&Yu, Leshan.(2024).Grassland-type ecosystem stability in China differs under the influence of drought and wet events.JOURNAL OF ARID LAND,16(5).
MLA	Cao, Wenyu,et al."Grassland-type ecosystem stability in China differs under the influence of drought and wet events".JOURNAL OF ARID LAND 16.5(2024).