Vegetation change in Shenzhen City based on NDVI change classification

TY - JOUR

T1 - Vegetation change in Shenzhen City based on NDVI change classification

AU - Li, Yijing

AU - Zeng, Hui

AU - Wei, Jianbin

PY - 2008

Y1 - 2008

N2 - Based on the TM images of 1988 and 2003 aswell as the land2use change survey data in 2004, the vegetation change in Shenzhen Citywas assessed by a NDV I ( normalized difference vegetation index) change classification method, and the impacts from natural and social constraining factors were analyzed. The results showed that as a whole, the rap id urbanization in 1988- 2003 had less impact on the vegetation cover in the City, but in its p lain areas with low altitude, the vegetation cover degraded more obviously. The main causes of the localized ecological degradation werethe invasion of built2up s to woods and orchards, land transformation from woods to orchards at the altitude of above 100 m, and low percentage of green land in some built2up s areas. In the future, the protection and construction of vegetation in Shenzhen should focus on strengthening the p rotection and restoration of remnant woods, trying to avoid the built2up s’expansion to woods and orchards where are better vegetation covered, rectifying the unreasonable orchard constructions at thealtitude of above 100 m, and consolidating the greenbelt construction inside the built2up s. It was considered that the NDVI change classification method could work well in efficiently uncovering the trend of macroscale vegetation change, and avoiding the effect of random noise in data

AB - Based on the TM images of 1988 and 2003 aswell as the land2use change survey data in 2004, the vegetation change in Shenzhen Citywas assessed by a NDV I ( normalized difference vegetation index) change classification method, and the impacts from natural and social constraining factors were analyzed. The results showed that as a whole, the rap id urbanization in 1988- 2003 had less impact on the vegetation cover in the City, but in its p lain areas with low altitude, the vegetation cover degraded more obviously. The main causes of the localized ecological degradation werethe invasion of built2up s to woods and orchards, land transformation from woods to orchards at the altitude of above 100 m, and low percentage of green land in some built2up s areas. In the future, the protection and construction of vegetation in Shenzhen should focus on strengthening the p rotection and restoration of remnant woods, trying to avoid the built2up s’expansion to woods and orchards where are better vegetation covered, rectifying the unreasonable orchard constructions at thealtitude of above 100 m, and consolidating the greenbelt construction inside the built2up s. It was considered that the NDVI change classification method could work well in efficiently uncovering the trend of macroscale vegetation change, and avoiding the effect of random noise in data

M3 - Article

VL - 19

JO - Chinese Journal of Applied Ecology

JF - Chinese Journal of Applied Ecology

IS - 5

ER -