摘要
本文以江苏省为研究区,利用美国国家航空航天局(NASA)发布的2000-2013年MODIS NDVI数据集,研究区行政区划矢量数据集、土地利用数据集,运用最大值合成法、趋势线分析法、像元二分模型和R/S分析,研究江苏省植被覆盖状况的时空分布特征,并从像元和区域尺度上分析植被覆盖度时空变化及持续性特征空间变化格局。结果表明:1植被NDVI、植被覆盖变化趋势与持续性变化在空间上表现出较好的耦合性;2江苏省植被覆盖度总体呈波动上升趋势,多年平均植被覆盖度苏中>苏北>苏南;3苏南、苏中植被覆盖度呈波动下降趋势;苏北植被覆盖度呈波动上升趋势;4江苏省植被覆盖未来呈现出持续退化稍大于改善的态势。
Based on the MODIS NDVI data in 2000 - 2013, the vector map of study region, socio-economic statistical data and land use type data, the spatial distribution of vegetation coverage and dynamics of vegetation cover were studied with methods of maximum value synthesis, the trend line analysis, dimidiatu pixel medel, R/S Analysis Method and Hurst Index. The vegetation coverage and its sustainability in Jian- geu province from 2000 to 2013 were analyzed on regional scale. The results showed that （i）Vegetation coverage, vegetation variation trend and vegetation stability performed a good coupling character in temporal and spatial. （ii）The vegetation coverage of Jiangsu province fluctua- ted and showed an increasing trend, and the average vegetation coverages were in order of the middle of Jiangsu 〉 the north 〉 the south. （iii） The vegetation coverages of Southern and Central Jiangsu were a decreasing trend, while the vegetation coverage of Northern Jiangsu was an increasing trend. （ iv）The vegetation coverage of Jiangsu performed that the situation of sustainable decrease was slightly larger than that of the improvement in the future.
出处
《西南农业学报》
CSCD
北大核心
2016年第2期437-444,共8页
Southwest China Journal of Agricultural Sciences
基金
国家自然科学基金项目(41201166)
国家国际科技合作专项资助项目(2012DFG22140)
作者简介
徐勇（1988－），男，湖南益阳人，硕士研究生，主要从事GIS和RS研究，E-mail：xuyongjiangsu@163．com
奚砚涛（1973－），男，博士，副教授，主要从事地图学与地理信息系统研究，E-mail：xyt556@163．com。
