Temporal and spatial distribution of vegetation in Lyuliang mountain and the influence of topographical differences

doi:10.14088/j.cnki.issn0439-8114.2021.05.010

Abstract

Abstract: Based on the MODIS NDVI data from 2000 to 2018, the average method and trend analysis method were used to reveal the characteristics of temporal and spatial changes of vegetation in Lyuliang mountain, and to explore the impact of topographical factors on vegetation changes. The results showed that the average annual normalized difference vegetation index（NDVI） of Lyuliang mountain showed an overall increasing trend from 2000 to 2018. The vegetation coverage of 99.77% of the whole area was stable and tended to be well transformed. Among them, the NDVI value of the middle section of the Lyuliang mountain was highest, and the NDVI value of western and northwestern Shanxi was lowest. Terrain differences affect the spatial distribution of NDVI to varying degrees. The elevation of 1 250~2 400 m, the NDVI increased with the elevation, and the elevation more than 2 400 m, the NDVI decreased with the elevation; The slope was bounded by 35°, When the slope was less than 35°, the mean value of NDVI increased with the increase of slope; The NDVI of shade slopes was higher than other slope directions and the difference was obvious, and the NDVI value of flat land was the smallest.

Key words: normalized difference vegetation index（NDVI）, temporal and spatial distribution of vegetation, topographic factors, Lyuliang mountain

CLC Number:

S157.2
TP79

SONG Xiao-jing, ZHOU Shu-qin, JING Yao-dong, WANG Bei-bei. Temporal and spatial distribution of vegetation in Lyuliang mountain and the influence of topographical differences[J]. HUBEI AGRICULTURAL SCIENCES, 2021, 60(5): 53-58.

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