| 基于GIS的小班海拔、坡度及地貌立地因子的自动求算 |
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| 引用本文： | 叶江霞,周汝良,魏晓燕,杨建祥,邓喜庆.基于GIS的小班海拔、坡度及地貌立地因子的自动求算[J].云南地理环境研究,2006,18(3):15-18. |
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| 作者姓名： | 叶江霞 周汝良 魏晓燕 杨建祥 邓喜庆 |
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| 作者单位： | 1. 西南林学院,云南,昆明,650224
2. 云南省林业规划调查设计院,云南,昆明,650200 |
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| 摘 要： | 地形地貌立地因子的调查是基于小班的森林资源二类调查的重要内容,现行的调查方法主要依靠实地测量或室内基于地形图进行计算,这种方法工作量大,时间周期长,工作效率低.利用基础测绘资料提供的20 m等高距的DEM数据,建立地图分析模型,模拟人实地调查、测量或室内计算的方法,在GIS系统中实现森林小班的海拔、坡度及地貌立地因子的自动计算.通过实验区的应用对比,自动计算的结果符合国家林业局颁布的〈森林资源规划设计调查主要技术规定〉要求.
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| 关 键 词： | 小班 立地因子 数字高程模型 自动求算 |
| 文章编号： | 1001-7852(2006)03-0015-04 |
| 收稿时间： | 2005-10-11 |
| 修稿时间： | 2006-02-22 |
AN AUTOMATICAL COMPUTATION OF ELEVATION、 SLOPE AND TOPOGRAPHY SITE FACTORS OF GIS -BASED SUBCOMPARTMENT |
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| YIE Jiang-xia,ZHOU Ru-liang,WEI Xiao-yan,YANG Jian-xiang,DENG Xi-qing.AN AUTOMATICAL COMPUTATION OF ELEVATION、 SLOPE AND TOPOGRAPHY SITE FACTORS OF GIS -BASED SUBCOMPARTMENT[J].Yunnan Geographic Environment Research,2006,18(3):15-18. |
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| Authors: | YIE Jiang-xia ZHOU Ru-liang WEI Xiao-yan YANG Jian-xiang DENG Xi-qing |
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| Institution: | 1.Southwest Forestry College, Kunming 650224,Yunnan, China;2.The Forest Resources Investigation Institution, Kunming 650200,Yunnan, China |
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| Abstract: | The investigation of site factors is the important part of subcompartmen-based forest resources investigation.There are two methods of subcompartment-based elevation?slope and topography investigation that are field measure and indoor map-based estimation,these methods not only need great ground work,much cost,but also they lead low efficiency.It proposed a new method of using 20 m DEM data providing through basic surveying material to build a map analyze model in order to imitate man's real field work or indoor calculation and estimation,therefore,it can realize an automatical computation of elevation,slope and topography site factors of subcompartment in GIS system.The consequence can meet the need of forest resources planning and designing technical regulation. |
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| Keywords: | subcompartment site factors digital elevation model automatical computation |
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