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基于GIMMS NDVI数据的四川植被覆盖度时空变化特征
Alternative TitleDynamic Change of Vegetation Coverage in Sichuan Region Based on GIMMS AVHRR NDVI
管磊1,2,3; 王华军1; 王玉宽2
Corresponding Author王华军
Source Publication科技通报
Other Abstract利用四川地区1982-2006年的GIMMS NDVI数据集、植被类型数据集,运用MVC法、一元线性回归法、分维分析、时间序列分析等方法,对该区域植被覆盖度的空间异质性及其季节、年际动态变化过程进行了研究,初步揭示了研究区植被覆盖的时空变化特征。结果表明四川地区植被覆盖度以2%/10a的速率呈下降趋势(P<0.05)。1982-2006年间,四川地区植被覆盖度在空间上呈现北高南低、东高西低的分布特征;在春季,四川地区植被生长季在提前,其植被覆盖度以0.6%/10a(P>0.05)的速率在增长,针叶林、栽培植被、阔叶林、灌丛、草丛、草甸和沼泽植被等生长季提前的植被对全球变化的响应比其他类型的植被更加迅速;在植物生长旺盛的夏季,只有沼泽植被的植被覆盖度增加。; Paper revealed the spatial and temporal variation of vegetation cover in Sichuan region by using MVC, a linear regression, fractal analysis and time series analysis method to study the spatial heterogeneity, seasonal and annual dynamic changes of vegetation coverage. The results showed that the vegetation coverage decline (P<0.05) with a mean rate of 2%/ 10a from 1982 to 2006. The vegetation coverage reduced from north to south and east to the west. In the spring, vegetation coverage increased (P> 0.05) with a rate of 0.6% / 10a. And it was found that these vegetation, which were coniferous forest,
planting vegetation, broad- leaved forests, shrubs, grass, meadow and marsh vegetation, more quickly respond to climate change by advance of growing season than other types of vegetation. In summer, only marsh vegetation coverage increased
Keyword地球探测 Ndvi 空间异质性 季节变化
Subject AreaQ948
Indexed By北大中文核心
Funding Organization环保部国际合作项目(编号:Y2B2010010) ; 国家自然科学基金资助项目(编号:41461029)
Citation statistics
Document Type期刊论文
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
管磊,王华军,王玉宽. 基于GIMMS NDVI数据的四川植被覆盖度时空变化特征[J]. 科技通报,2006,32(6):31-36+41.
APA 管磊,王华军,&王玉宽.(2006).基于GIMMS NDVI数据的四川植被覆盖度时空变化特征.科技通报,32(6),31-36+41.
MLA 管磊,et al."基于GIMMS NDVI数据的四川植被覆盖度时空变化特征".科技通报 32.6(2006):31-36+41.
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