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- Title
经济快速增长区建筑用地变化及其对生态质量的影响 -- 以福建晋江为例.
- Authors
施婷婷; 徐涵秋; 唐菲
- Abstract
Since China ' s reform and opening-up, the rapid growth of China ' s economy has greatly accelerated the expansion of built-up land, which has affected regional ecological environment to a great extent. Taking Jinjiang County of Fujian Province, one of the fastest economic-developing counties in the coastal areas of southeastern China, as a case study area, this paper focused on analyzing the rapid built-up land expansion process of the county and its impact on county ' s ecological quality using remote sensing techniques. Based on two Landsat images of 1996 and 2015 of Jinjiang, the built-up land of the county was extracted using the index-based built-up index (IBI) and its change was analyzed. In the meantime, the ecological status of Jinjiang was evaluated with a recently-proposed remote sensing based ecological index (RSEI) and the relationship between the built-up land dynamics and the ecological status changes of the county was quantitatively examined. The results showed that during the period from 1996 to 2015, the area of built-up land of Jinjiang had a net increase of 68.54 km², a growth of 45%, and the expansion intensity was 0.55. The expansion of the built-up lands has caused overall degradation of the county' s ecological quality. The mean value of RSEI of the county had declined from 0.532 in 1996 to 0.460 in 2015, a drop of 13.5%. The area proportion of high ecological-quality grades also significantly fell from 39% in 1996 to 21% in 2015. The built-up land expansion intensity was negatively correlated with the ecological quality change.
- Publication
Yingyong Shengtai Xuebao, 2017, Vol 28, Issue 4, p1317
- ISSN
1001-9332
- Publication type
Article
- DOI
10.13287/j.1001-9332.201704.014