基于DEM的马来西亚沙巴州林地变化分析  

Analysis on Woodland Change in Sabah,Malaysia Based on DEM

作　　者：徐美荣 闫金凤[1] 张宵宵 高珊珊 XU Meirong;YAN Jinfeng;ZHANG Xiaoxiao;GAO Shanshan(College of Geomatics,Shandong University of Science and Technology,Qingdao Shandong 266590,China)

机构地区：[1]山东科技大学测绘科学与工程学院

出　　处：《北京测绘》2019年第11期1308-1311,共4页Beijing Surveying and Mapping

基　　金：中国科学院战略性先导科技专项(A类)“地球大数据科学工程”(XDA19060300)

摘　　要：为了解马来西亚沙巴州林地信息分布特点和空间布局特征,利用Landsat卫星数据以及DEM数据提取马来西亚沙巴州1990-2017年的林地分布信息,并分析主要林地在不同范围内的变化。结果显示沙巴州主要林地是天然林和人工林,天然林和红树林面积减少,人工林和次生林面积增加,红树林分布在东南部沿海地区,灌丛和草地零星分布;28年间,马来西亚沙巴州林地面积0-30 m高程范围内变化最为显著,其次是50-100 m内,天然林的破坏程度随着高程的降低而增加,人工林在不同高程范围内均有一定程度的开发,其中大于800 m时人工林开发程度最小。In order to understand the characteristics of woodland information distribution and spatial layout in Sabah,Malaysia,Landsat satellite data and DEM data were used to extract the woodland distribution information in Sabah,Malaysia from 1990 to 2017,and the changes of main woodland in different ranges were analyzed.The results show that the main woodland in Sabah is natural forest and secondary forest,the area of natural forest and mangrove decrease,the area of plantation and secondary forest increase,mangrove distributes in the southeast coastal area,shrub and grassland scattered distribution.During the 28 years,the woodland area of Sabah in Malaysia changed most significantly within the range of 0-30 m elevation,followed by 50-100 m.The natural forest increased with the decrease of elevation.The plantation is developed to a certain extent in the range of different elevation grades,among which the plantation is the least developed when it is over 800 m.

关 键 词：数字高程模型(DEM) 林地信息提取 沙巴州 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置] P237[自动化与计算机技术—控制科学与工程]