生态与农村环境学报2018，Vol.34Issue(1)：37-45,9.DOI:10.11934/j.issn.1673-4831.2018.01.005
2004-2014年太湖流域植被覆盖时空变化特征
Spatio-Temporal Variations of Vegetation Coverage in Taihu Lake Basin From 2004 to 2014
摘要
Abstract
As is well known, the Taihu Lake Basin is always one of the regions relatively well-developed in economy in China. With the region developing rapidly in economy, growing in population and rising in urbanization level, the forest e-cosystem therein has been deteriorating seriously. Therefore, it is very important for us to study changes in spatial pattern of its vegetation cover and their influencing factors, so as to lay down certain basis for formulating scientific sustainable de-velopment programs for the basin. Relevant MODSI-NDVI data available were analyzed using the dimidiate pixel model, variation coefficient, linear trend analysis, principal component analysis and some other analysis methods to characterize changes in spatio-temporal pattern of the vegetation cover of the basin, and trends and influential factors of the changes from 2004 to 2014. Results show:( 1) In the past 11 years from 2004 to 2014, the vegetation cover, on the whole, was on a significant declining trend, with a rate being 2. 6％·( 10 a)-1 . Its mean dropped from 0. 6065 in 2004 to 0. 5942 in 2014, or by 2. 03％;( 2) The spatial distribution of the vegetation cover in the basin exhibited a downward trend from the southwest to the east, and varied the most drastically in the east, less in the north and west, and the least in the south-west;( 3) The areas with vegetation cover seriously degraded accounted for 35. 08％ of the total of the basin in area, while those with vegetation cover obviously improved accounted for 40. 00％ and were mostly distributed in the southwest and east and rarely in northwest;and ( 4) The decrease in the vegetation cover of the basin was attributed mainly to the joint effect of the increases in precipitation, population and economic development. And human activities had dual effects on vegetation cover. It is, therefore, essential for the Taihu Lake Basin to control the population growth, optimize the employ-ment structure, and accelerate the construction of ecological civilization and vegetation restoration, for the purpose of miti-gating the detrimental effect of population and industrial development on the vegetation, enhancing citizens′environmental protection consciousness, and reducing destruction of the ecological environment.关键词
太湖流域/植被覆盖/时空变化/趋势分析/影响因素Key words
Taihu Lake Basin/vegetation cover/spatio-temporal variation/trend analysis/influencing factor分类
农业科技引用本文复制引用
潘颖,林杰,佟光臣,唐鹏,张金池,顾哲衍..2004-2014年太湖流域植被覆盖时空变化特征[J].生态与农村环境学报,2018,34(1):37-45,9.基金项目
国家重点研发计划(2017YFC0505500) （2017YFC0505500）
国家自然科学基金(31200534) （31200534）
江苏高校优势学科建设工程资助项目 （）
2014年江苏省普通高校学术学位研究生科研创新计划 （）
