内蒙古植被稳定性及其影响因素分析

植被是生态系统的主要组成部分,在调节全球气候变化和生态平衡方面有重要作用,是气候变化的指示器.因此,研究植被弹性和抗性及影响因素对区域植被稳定性现状和生态可持续发展具有重要意义.基于2000—2019年MOD13A2 NDVI数据、气象数据和植被类型数据,通过自回归模型、趋势分析及地理空间分析方法,对内蒙古植被稳定性及...

Vegetation Stability and Its Influencing Factors in Inner Mongolia

As a major component of ecosystem, vegetation plays a vital role in regulating global climate change and ecological balance. It is an indicator of climate change. The study of vegetation elasticity, vegetation resistance and their influencing factors is of great significance to regional vegetation stability and ecological sustainable development. Based on the MOD13A2 normalized difference vegetation index (NDVI) data, meteorological data and vegetation type data from 2000 to 2019, we discussed the vegetation stability and its influencing factors in Inner Mongolia through autoregressive model, trend analysis and geospatial analysis. Results illustrated that the NDVI of forest, meadow grassland and desert grassland in Inner Mongolia increased from 2000 to 2019, and vegetation coverage tended to improve as a whole. The fitting degree between vegetation elastic index and average NDVI of forest and meadow steppe is low, and the fitting degree between vegetation elastic index and NDVI of desert steppe is higher, which indicates that the vegetation elasticity of forest and meadow steppe is high, and that of desert steppe is low. Desert steppe is more resistant to precipitation and temperature, while forest and meadow steppe are less resistant to temperature. The results suggest that the elasticity of different types of vegetation in Inner Mongolia varies with climate factors, and precipitation is the major limiting factor of vegetation change in Inner Mongolia.