山西省不同地貌形态类型区土地覆被变化的GIS分析

发布时间：2018-01-04 20:10

本文关键词：山西省不同地貌形态类型区土地覆被变化的GIS分析　出处：《地球信息科学学报》2016年02期 　论文类型：期刊论文

【摘要】：基于全国1:100万数字地貌数据库,全国2000、2005、2010年土地覆被数据和山西省行政区边界数据,采用土地覆被动态度、转移概率矩阵和地貌面积频度方法,分析了2000-2010年山西省基本地貌形态类型下的土地覆被变化。结果表明:(1)山西省的土地覆被类型以耕地、林地和草地为主,面积总和占省域面积的95%以上。面积变化的总体趋势是耕地和草地缩减,林地和建设用地持续增加。通过分析转移概率矩阵,表明2000-2005年和2005-2010年2个时段内,土地利用的主要转化趋势相似,即林地与草地之间大面积的相互转化,耕地、草地分别与建设用地之间的相互转化。(2)耕地和建设用地的分布,随着起伏度的增大而逐渐减小。林地分布随着起伏度的增加而逐步增大。从面积变化来看,耕地、林地和草地变化主要位于中起伏山地;水域变化主要集中在大起伏山地;建设用地变化主要分布于平原和台地;未利用地变化主要在小起伏山地。从动态度来看,耕地、草地和水域动态度,在大起伏山地地区最大;林地动态度在平原区最大;建设用地的动态度最大位于丘陵;未利用地在小起伏山地地区最大。(3)土地覆被类型之间的主要转化在地貌上也存着差异。平原地区林地的增加主要来自草地转化。台地和丘陵地区3个主要转化类型相似,2000-2005年主要是林地向草地退化,2005-2010年主要是林地和草地的相互转化。在小起伏山地地区,主要是草地和林地之间的相互转化,但草地转化为林地的面积较林地向草地的转化多。中起伏和大起伏山地地区主要以草地和耕地向林地的转化为主,也有较高比例的建设用地转化为林地。封山育林和退耕还林主要是在起伏较大的山地地区,毁林主要发生在地形平缓地区。
[Abstract]:The database 1:100 million digital geomorphology based on 200020052010 years of national land cover data in Shanxi province and the administrative region boundary data, using land cover dynamic degree, transtion-probablity matrix and area frequency method, analyzed the 2000-2010 basic landform of Shanxi Province under the land cover change. The results showed that: (1) in Shanxi province land cover types in farmland, forest and grassland, the total area accounted for more than 95% of the provincial area. The overall trend is the area change of cultivated land and grassland reduced, woodland and construction land increased continuously. Through the analysis of the transfer probability matrix shows that 2000-2005 and 2005-2010 in the 2 periods, the main trend of land conversion the use of similar, namely mutual transformation, a large area between woodland and grassland of cultivated land, mutual transformation between grassland and construction land respectively. (2) the distribution of cultivated land and construction land, with the ups and downs of Decreases with the increase of waviness. The distribution of woodland and cultivated land area increased gradually. From the point of view changes, and changes in woodland and grassland are mainly located in the mountainous region; the change of water area mainly concentrated in the mountainous region; the change of construction land is mainly distributed in plain and tableland; unused land mainly in small undulating mountain farmland. From the dynamic point of view, grassland and water, dynamic degree, maximum in the mountainous region area; woodland dynamic degree in the plain area; land use dynamic degree maximum is located in the hilly building; unused land in the area. The small undulating mountain (3) land cover transformation between types there are also differences in the the topography of plain forest. Increased mainly from grassland conversion. 3 main types of transformation platform and hilly area is similar, 2000-2005 is mainly woodland to grassland degradation, 2005-2010 is mainly between woodland and grassland The transformation. In the small undulating mountain area, mainly is the mutual transformation between grassland and woodland, but the grassland into forest land area of woodland to grassland conversion. In mountainous areas and large fluctuation fluctuation mainly in the grassland and farmland to Forestland conversion, also have a higher proportion of construction land into forest land. Afforestation and reforestation is mainly in the undulating mountain area, deforestation occurred mainly in the flat terrain area.

【作者单位】：太原理工大学矿业工程学院测绘科学与技术系;中国科学院地理科学与资源研究所资源与环境信息系统国家重点实验室;江苏省地理信息资源开发与利用协同创新中心;
【基金】：全球变化研究国家重大科学研究计划(2015CB954101) 科技基础性专项(2011FY110400-2) 测绘地理信息公益性行业科研专项(201512033) 国家自然科学基金面上项目(41301469、41171332)
【分类号】：P931;P208
【正文快照】： 何维灿1,2,赵尚民1*,程维明2,31.太原理工大学矿业工程学院测绘科学与技术系,太原030024;2.中国科学院地理科学与资源研究所资源与环境信息系统国家重点实验室,北京100101;3.江苏省地理信息资源开发与利用协同创新中心,南京2100231引言土地覆被格局及其时空变化是人类与自然界

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