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[1]DAI Renli,ZHONG Jiusheng,HE Zhiyuan,et al.Synergistic Effects of Climate Factors on Vegetation Coverage in Guizhou Province[J].Research of Soil and Water Conservation,2022,29(03):262-268.

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Synergistic Effects of Climate Factors on Vegetation Coverage in Guizhou Province

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 29 Number of periods: 2022 03 Page number: 262-268 Column: Public date: 2022-04-20

Title:: Synergistic Effects of Climate Factors on Vegetation Coverage in Guizhou Province

Author(s):: DAI Renli, ZHONG Jiusheng, HE Zhiyuan, HE Xin, LIN Shuangshuang; (School of Geography and Environmental Science, Guizhou Normal University, Guiyang 550001, China)

Keywords:: normalized difference vegetation index(NDVI); trend analysis; synergistic impact; Guizhou Province

CLC:: Q948

DOI:: -

Abstract:: Exploring the synergistic effects of climate factors on vegetation coverage can further understand the growth state and evolution patter of vegetation, and provide a certain basis for scientific estimation of vegetation change and ecological protection. Based on MODIS NDVI data and meteorological station data from 2001 to 2018, the spatial distribution characteristics of climate factors(precipitation, air temperature)and NDVI during vegetation growth period in Guizhou Province were studied. Partial correlation analysis and multiple regression analysis were used to explore the correlation between NDVI of vegetation growth period and climate factors and its synergistic response to climate factors in Guizhou Province pixel by pixel. At the same time, the sensitivity of NDVI of vegetation of different geomorphic types to precipitation and air temperature was analyzed based on geomorphic types. The results show that annual mean precipitation and temperature presented obvious spatial differences between in Guizhou Province, and the spatial distribution of precipitation increased in a zonal pattern from northwest to southeast; the average NDVI in vegetation growth period showed a fluctuating increasing trend on the whole, with the rate of 0.042 per year, and the area with an increasing trend was about 160 836.69 km²; both air temperature and precipitation had significant effects on vegetation growth in Guizhou Province, and the effect of air temperature was greater than that of precipitation; vegetation NDVI of different geomorphic types had different sensitivities to precipitation and air temperature; for the same geomorphic type, the sensitivity of NDVI of vegetation to air temperature was higher than that of precipitation. On the whole, the NDVI of vegetation growth period in Guizhou Province showed an increasing trend, and the vegetation coverage increased continuously. The synergistic effects of precipitation and air temperature on vegetation were different in different geographical environment regions.

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Last Update: 2022-04-20