黔桂喀斯特山地与山区类型划分技术与应用

发布时间：2018-10-20 18:21

【摘要】：科学界定山地和山区类型是认识山地、因地制宜促进山区可持续发展的基础,可为山区分类开发、分类施策提供依据。本文采用均值变点法确定滑动窗口尺寸,运用空间分析工具对SRTM进行处理以获取山地坡度、起伏度,并提取了黔桂喀斯特各类山地空间范围和规模,以此对县级层面黔桂喀斯特山区类型进行了划分。主要结论如下:(1)二次使用均值变点法确定移动窗口面积与平均地形起伏度拟合的对数曲线拐点,其表征的是黔桂喀斯特山区地形起伏度最佳统计单元—移动窗口面积为6.50 km~2。(2)黔桂喀斯特山地占比大,山地与非山地面积之比约为89:11,且山地省际空间分异明显,贵州喀斯特山地以中山、中低山为主,占贵州部分的57%;而广西喀斯特山地以丘陵为主,占广西部分的59%。(3)黔桂喀斯特山地区均为山区县,其中,18个纯丘陵县、10个半山区县、15个准山区县、21个显山区县、32个整山区县。整山区县个数多,多分布于乌蒙山区和黔桂峰丛洼地山区,多数为国家扶贫开发工作重点县。
[Abstract]:The scientific definition of mountain area and its type is the basis of understanding mountain area and promoting sustainable development of mountain area according to local conditions, which can provide basis for classification development and classification strategy of mountain area. In this paper, the mean value variation point method is used to determine the size of sliding window, and the spatial analysis tool is used to process the SRTM to obtain the mountain slope and fluctuation, and the spatial range and scale of various mountain areas in Guizhou and Guangxi karst are extracted. On the basis of this, the types of karst mountain areas in Guizhou and Guangxi are classified at county level. The main conclusions are as follows: (1) the logarithmic curve inflection point of the moving window area fitting to the mean relief degree is determined by means of the mean variable point method. The best statistical unit of topographic fluctuation in Guizhou and Guangxi karst mountain areas is the moving window area of 6.50 km~2. (2) the ratio of mountainous and non-mountainous areas is about 89: 11, and the spatial differentiation of mountainous provinces is obvious. The karst mountains in Guizhou are mainly Zhongshan, middle and low mountains, accounting for 57% of the Guizhou part, while the karst mountain areas in Guangxi are mainly hilly areas, accounting for 5910% of the Guangxi part. (3) the karst mountain areas in Guizhou and Guangxi are all mountain districts and counties. Among them, 18 pure hilly counties, 10 half-mountain counties, 15 quasi-mountain counties, 21 Xianshan district counties, 32 whole mountain counties. There are many counties in the whole mountain area, most of them are located in the Wumeng Mountain area and the Guizhou and Guangxi mountain areas, and most of them are the key counties of the national poverty alleviation and development work.
【作者单位】：贵州师范大学地理与环境科学学院;中国科学院地理科学与资源研究所;
【基金】：国家重点基础研究发展计划“973”项目(2015CB452706) 国家自然科学基金项目(41361021) 贵州省科学技术基金项目(QJLKS[2013]17)
【分类号】：P208

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