淮河流域土地利用时空格局动态及其植被覆盖变化分析
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摘要
淮河流域是我国七大流域之一,其土地利用变化对国土资源优化布局和生态环境保护具有显著作用。以2000年、2005年及2013年3期土地利用数据为基础,分析了淮河流域土地利用动态变化特征并利用植被指数、植被覆盖度变化对研究区土地利用的合理性进行评价。结果表明:该流域土地利用类型在数量、结构上都存在明显的分异特征。2000-2013年综合土地利用动态度为0.36%,表明这期间每年每100 km2土地中有0.36 km2的利用方式发生了改变。土地利用类型间的多维向转化是引起土地利用时空分布变化的直接表现形式。2000-2013年期间植被指数(NDVI)的变化趋势表明近13年来淮河流域土地利用变化呈良好发展态势。
The Huaihe River basin is one of China's seven major river basins. Changes of land use in valleys will facilitate optimizing the land use structure and protecting the ecological environment. Based on the land use data in 2000,2005 and 2013,by Arc GIS software and other statistical methods,this paper analyzes the characteristics of land use pattern on the space-time dynamic changes in the Huaihe River Basin and conducts evaluations by the normalized difference vegetation index analysis. The results show that there are conspicuous differentiation characteristics of the land-use types in spatial scale and component. On the whole,land use comprehensive dynamic changes is 0.36 percent,and it indicates that 0.36 km2 land changes its way of use per 100 km2 land every year. The multidimensional transformation of land use types is a direct manifestation that caused the temporal and spatial distribution changes of land use from 2000 to 2013. From 2000 to 2013,the NDVI was obviously improved,and land use changes had a good development trend in the past 13 years in the Huaihe River basin.
The Huaihe River basin is one of China's seven major river basins. Changes of land use in valleys will facilitate optimizing the land use structure and protecting the ecological environment. Based on the land use data in 2000,2005 and 2013,by Arc GIS software and other statistical methods,this paper analyzes the characteristics of land use pattern on the space-time dynamic changes in the Huaihe River Basin and conducts evaluations by the normalized difference vegetation index analysis. The results show that there are conspicuous differentiation characteristics of the land-use types in spatial scale and component. On the whole,land use comprehensive dynamic changes is 0.36 percent,and it indicates that 0.36 km2 land changes its way of use per 100 km2 land every year. The multidimensional transformation of land use types is a direct manifestation that caused the temporal and spatial distribution changes of land use from 2000 to 2013. From 2000 to 2013,the NDVI was obviously improved,and land use changes had a good development trend in the past 13 years in the Huaihe River basin.
引文
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[11]张杰,赵冰,杨伟,等.基于Arc GIS的淮河流域大别山区土地利用变化与土壤侵蚀特征研究[J].水土保持通报,2009,1(1):119-122.
[12]赵时英.遥感应用分析原理与方法[M].北京:科学出版社,2003.
[2]刘纪远,张增祥.中国近期土地利用变化的空间格局分析[J].中国科学:D辑,2002,32(12):1 031-1 040.
[3]Turner I B L,Lambin E F,Reenberg A.The emergence of land change science for global environmental change and sustainability[J].PNAS,2007,104(52):20 666-20 671.
[4]Ojima D,Lavorel S,Graumieh L,et al.Terrestrial human.environment systems:the future of land research in 1GBPⅡ[Z].In:Global Change News letter Issue No,2002,50.
[5]于兴修,杨桂山.中国土地利用/覆被变化研究的现状与问题[J].地理科学进展,2002,21(1):51-57.
[6]邵景安,李阳兵,魏朝富,等.区域土地利用变化驱动力研究前景展望[J].地球科学进展,2007,22(8):798-809.
[7]许月卿,彭建.贵州猫跳河流域土地利用变化及其对土壤侵蚀的影响[J].资源科学,2008,30(8):1 218-1 225.
[8]李鹏杰,何政伟,李璇琼.基于RS和GIS的土地利用/覆被动态变化监测——以九龙县为例[J].水土保持研究,2012,12(2):39-42.
[9]张靖,同丽嘎,董建军,等.土地利用/覆盖变化研究方法[J].内蒙古大学学报(自然科学版),2013,44(3):329-336.
[10]周兆叶,储少林,王志伟,等.基于NDVI的植被覆盖度的变化分析——以甘肃省张掖市甘州区为例[J].草业科学,2008,(12):25(12):23-30.
[11]张杰,赵冰,杨伟,等.基于Arc GIS的淮河流域大别山区土地利用变化与土壤侵蚀特征研究[J].水土保持通报,2009,1(1):119-122.
[12]赵时英.遥感应用分析原理与方法[M].北京:科学出版社,2003.