Climate response of NDVI index on Qinling Mountains in 25 years

doi:10.13474/j.cnki.11-2246.2019.0087

Abstract

Abstract: Using vegetation index and four meteorological stations'air temperature,precipitation data of the research area in 1982 to 2006,the paper researches vegetation index,the temperature and precipitation change tendency of qinling region in shaanxi,analyzes the correlation between vegetation index and the temperature or precipitation.Using the vegetation type data analysize the related degree between different vegetation types of NDVI and different climate factors.The results show that from 1982 to 2006,the research area average annual temperature is an obvious rise,rise up to 2.1℃,the annual total rainfall of every 10 years down about 72 mm,NDVI in qinling region increases slightly.Overall,the correlation between the changes of vegetation index and temperature in the middle region is the largest,decreasing on both sides and the correlation between rainfall is minimum in the middle,increment on both sides.Temperature has the greatest influence on orchard and economic forest,precipitation has the greatest impact on broad-leaved forests.The temperature is the main factors influencing the changes of vegetation index in the region.

Key words: Qinling Mountains, NDVI, climate factor, correlation

CLC Number:

P237

CHEN Xiaoning, JIANG Haochen. Climate response of NDVI index on Qinling Mountains in 25 years[J]. 测绘通报, 2019, 0(3): 103-107.

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