Human activities dominant the distribution of Kobresia pygmaea community in alpine meadow grassland in the east source region of Yellow River, China

Frontiers in Ecology and Evolution

Ecology and Evolution

Shuhua Yi¹  Baoping Meng¹  Yi Sun¹  Yanyan Lv¹ 

[1] Institute of Fragile Eco-Environment, Nantong University, Nantong, Jiangsu, China;School of Geographic Science, Nantong University, Nantong, Jiangsu, China;

关键词: Kobresia pygmaea;    BIOMOD;    potential distribution;    alpine meadow;    driving factors;   

DOI  :  10.3389/fevo.2023.1127973

 received in 2022-12-20, accepted in 2023-01-16,  发布年份 2023

来源: Frontiers

【 摘 要 】

Kobresia pygmaea is the endemic and one of the most important species in the alpine meadow in the Qinghai-Tibet Plateau. It is the key stage in the management of degraded grassland, and irreversible degradation will take place after the degradation succession phases of the Kobresia pygmaea community. However, knowledge about the spatial distribution and driving factors were still unknown. In this study, the potential distribution of the Kobresia pygmaea community was determined using the BIOMOD niche model. Combine with the reality distribution based on remote sensing classification, the driving factors of climate and human activities were identified. The findings revealed that: (1) among all environmental factors, the maximum radiation, monthly temperature difference, driest period precipitation were the main climate influencing factors for the Kobresia pygmaea community distribution, and random forest model achieved the highest prediction accuracy and best stability of any niche model. (2) The potential distribution area of Kobresia pygmaea community was 653.25 km2 (account for 3.28% of the study area), and mostly located in northern and central of Zeku County, northeast of Henan County, and northeast, central, and eastern parts of Maqu County. (3) Climate factors driven 21.12% of Kobresia pygmaea community reality distribution, while human activities driven for 79.98%. Our results revealed that human activities dominant the reality distribution of Kobresia pygmaea community in alpine meadow grassland in the east source region of Yellow River, China.

【 授权许可】

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Copyright © 2023 Lv, Sun, Yi and Meng.