生态学杂志2013，Vol.32Issue(2)：452-458,7.
2000-2011年黄土高原植被景观格局变化
Landscape pattern changes of vegetation coverage in Loess Plateau of Northwest China in 2000-2011
摘要
Abstract
With the help of RS and GIS, and based on the remote sensing data of MODIS NDVI, this paper analyzed the landscape pattern changes of vegetation coverage in Loess Plateau in the time intervals 2000-2003 , 2004-2007, and 2008-2011 and in the each period of summer (ear-ly summer, mid summer and late summer). In the past twelve years, the vegetation coverage in the Plateau at landscape level had a great change. The fragmentation and complexity decreased after an initial increase in early summer, but tended to be complicated in mid summer and late summer, i. e. , the landscape dominance and the aggregation of the largest patch decreased, the diversity decreased after an initial increase, whereas the landscape connectivity had less change. At coverage type level, the inter-annual change was mainly manifested in the conversion from me-dium-low and medium coverage types to medium-high and high coverage types, while the low coverage type had a trend of increased first and decreased then, with a small change range of about 3% to 5%. In terms of intra-seasonal variability, the low coverage type continued to decrease, the medium and high coverage types increased obviously, with the maximum increment being 9. 76% , the medium-low coverage type had the largest decrement (13. 77% ) in midsum-mer, while the other coverage types had no clear variation trend. The results revealed the land-scape pattern changes of vegetation coverage in the Loess Plateau of Northwest China, which could provide references for the construction of local vegetation and the protection of local ecologi-cal environment.关键词
黄土高原/植被覆盖度/景观格局/MODIS NDVI/遥感Key words
Loess Plateau/vegetation coverage/landscape pattern/MODIS NDVI/remote sensing分类
生物科学引用本文复制引用
张建香,张勃,尹海霞,王媛媛,赵一飞..2000-2011年黄土高原植被景观格局变化[J].生态学杂志,2013,32(2):452-458,7.基金项目
国家自然科学基金项目(40961038)、生态经济学省级重点学科项目(5002-021)和西北师范大学知识与科技创新工程项目(NWNU-KJCXGC-03-66)资助. （40961038）
