| 基于地形因子的鄱阳湖地区土地利用格局变化分析 |
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| 引用本文： | 李欣,叶长盛,吕雪.基于地形因子的鄱阳湖地区土地利用格局变化分析[J].水土保持研究,2017(4):210-218. |
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| 作者姓名： | 李欣 叶长盛 吕雪 |
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| 作者单位： | 江西省数字国土重点实验室,南昌330013;东华理工大学地球科学学院,南昌330013 |
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| 基金项目： | 江西省数字国土重点实验室开放基金(DLLJ201611)基于GIS的江西省传统村落空间分布特征及其影响因素 |
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| 摘 要： | 为研究土地利用空间格局变化地形特征,采用1990年、2000年、2010年、2013年4期鄱阳湖地区Landsat TM解译数据及DEM数据,借助地形位、分布指数、地学信息图谱方法,深入探讨了1990—2013年鄱阳湖地区不同地形下土地利用格局的变化特征。结果表明:(1)1990—2013年,鄱阳湖地区土地利用类型以耕地、林地、水域为主,三种类型面积占比均在90%以上,建设用地快速增长,由1990年的1 387.42km~2增加到2013年的2 413.98km~2,增加了1 026.56km~2,耕地、未利用土地、林地面积分别减少513.39km~2,399.04km2,123.75km~2;(2)1990—2013年,土地利用格局变化具有地形效应,低地形范围优势分布耕地、建设用地、水域,高地形范围林地优势分布,未利用土地、草地零散分布对地形变化适宜性较强;(3)1990—2013年,研究区土地利图谱以稳定型和中期型为主,面积分别为48 457.44km~2,2 014.56km~2,稳定型图谱的优势区域位于高、低地形范围,耕地、林地、建设用地变化稳定;低、中高地形范围是中期变换型的优势分布区,主要表现为未利用土地—未利用土地—水域—水域、耕地—耕地—建设用地—建设用地。
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| 关 键 词： | 土地利用 地形因子 地形位指数 土地利用变化图谱 鄱阳湖地区 |
Analysis of land Use Pattern Change in Poyang Lake Region Based on the Topographic Factor |
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| LI Xin,YE Changsheng,LYU Xue.Analysis of land Use Pattern Change in Poyang Lake Region Based on the Topographic Factor[J].Research of Soil and Water Conservation,2017(4):210-218. |
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| Authors: | LI Xin YE Changsheng LYU Xue |
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| Abstract: | In order to study the terrain gradient characteristics of land use spatial pattern change,Landsat TM interpretation data and DEM data of Poyang Lake area in 1990,2000,2010 and 2013 were used to analyze the relationship between landform,distribution index and geo-information map.Characteristics of Land Use Pattern Change's topographic effect in Poyang Lake Region from 1990 to 2013.The results showed that:(1) From 1990 to 2013,the main land use types in Poyang Lake area were cultivated land,forest land and water area,its areas of these three types accounted for more than 90％ in all 23 years,and the area of construction land increased obviously from 1 387.42 km2 (1990) to 2 413.98 km2 (2013),while cultivated land(decreased 513.39 km2),unused land(decreased 399.04 km2) and forest land (decreased 123.75 km2)decreased significantly.(2) From 1990 to 2013,the change of land use pattern had a terrain effect,and the low terrain gradient scope dominated the distribution of forest land in the range of cultivated land,construction land,water area and high terrain gradient,while unused land and grassland distributed to terrain gradient Suitability is strong.(3) From 1990 to 2013,the land use pattern of the study area was mainly stable (48 457.44 km2) and medium-term(2 014.56 km2),and the dominant area of stable map was located in the gradient of high and low terrain,and the change of cultivated land,woodland and construction land was stable;low and high terrain gradient range is the dominant distribution area of the medium-term transformation,mainly for the unused land-unused land-waters-waters,arable land-arable land-construction land-construction land. |
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| Keywords: | land use terrain factor terrain niche index land use change TUPU Poyang Lake Region |
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