[1]TONG Limian,ZENG Biao,WANG Xin.Spatiotemporal Variation of NDVI and Its Influence Factors in Different Ecological Districts, Shanxi Province[J].Research of Soil and Water Conservation,2016,23(03):71-76.
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Spatiotemporal Variation of NDVI and Its Influence Factors in Different Ecological Districts, Shanxi Province
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
23
Number of periods:
2016 03
Page number:
71-76
Column:
Public date:
2016-06-28
- Title:
- Spatiotemporal Variation of NDVI and Its Influence Factors in Different Ecological Districts, Shanxi Province
- CLC:
- Q948.1
- DOI:
- -
- Abstract:
- Spatiotemporal variation of growing-season average NDVI in Shanxi Province was analyzed based on MODIS-NDVI during the period from 2000 to 2012, and the influence of climate change and human activities impacting on vegetation growth were discussed. The result showed that: (1) the growing-season average NDVI of three ecological districts in Shanxi Province which were the Mountain Deciduous Broad-leaved Forest Ecological District, the Agriculture and Grassland Ecological District and the Fen River Valley Agricultural Ecological District showed a significant increase trend; the growth rates of three ecological districts were 0.052/decade, 0.079/decade and 0.049/decade, respcectively; (2) there were obvious spatial differences about vegetation change in Shanxi Province, the greening area accounted for 73.76% of the total area that was mainly distributed in Taihang Mountain, Taiyue Mountain, Lüliang Mountain, Zhongtiao Mountain, the degraded area accounted for 3.29% of the total area that was mainly distributed in the edge of Taiyuan Basin and Linfen Basin; (3) both climate change and human activities were important factors on vegetation variation. Different districts had different responses to climate change. Increasing precipitation from November to May probably was the main reason for average NDVI increase in the Mountain Deciduous Broad-leaved Forest District. Decreasing temperature from December to January and increasing precipitation from February to May probably were the main reasons for average NDVI increase in the Agriculture and Grassland District. Decreasing temperature from May to September and increasing precipitation from November to August probably were the main reasons for average NDVI increase in the Fen River Valley Agricultural District. In addition, the impacts of human activities on the NDVI changes mainly were observed in forestland shifted from the cropland, shelter forest construction, mining, urban expansion.
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