摘要
以MOD13Q1-NDVI为数据源,计算和分析平果县2000年和2016年植被演变和空间变化特征,并通过叠加平果县岩性图比较岩溶区和非岩溶区的差异。结果表明:(1)平果县平均植被覆盖度72.49%,年均增长0.8%,以中高和高覆盖度为主,生态恢复和环境治理工程取得显著成效;(2)从2000年至2016年岩溶区和非岩溶平均植被覆盖度分别提高了9.93%和18.22%,地质背景对植被生长影响显著;(3)植被覆盖度重度增长、中度增长和轻度增长区域面积占全县71%,植被覆盖度减少较明显的区域主要是马头镇、新安镇等相对发展开发的地区。
Using MOD13Q1- NDVI as a data source,calculate and then analyse the characteristics of evolution and spatial distribution of the vegetation in Pingguo in 2000 and 2016. Also,the karst area and the non- karst area are compared by superimposing the lithology map. The results support that： 1） The average vegetation coverage of Pingguo is 72. 49% at a0. 8% annual growth. Vegetation coverage is dominated by the range of medium- high coverage and high coverage. The ecological restorations and environmental control projects in Pingguo have achieved remarkable results. 2） From 2000 to 2016,the average vegetation coverage in karst area and non- karst area have increased by 9. 93% and 18. 22% respectively. The influence of different geological background on vegetation growth is significant. 3） Moderate growth and mild growth area can account for 71%. And vegetation coverage decreased obviously in some relative development regions,such as Ma Tou Town and Xin＇an Town.
出处
《环境与可持续发展》
2017年第1期140-143,共4页
Environment and Sustainable Development
基金
国家重点研发项目专题"流域石漠化回复的关键过程机理及逆转的生态风险研究"(2016YFC0502401)
关键词
广西平果
植被覆盖度
岩性
Pingguo
Guangxi
vegetation coverage
lithology
