[1]王秀云,陈 晔,周厚华,等.DEM在林地资源表面积调查中的应用[J].南京师范大学学报(工程技术版),2006,06(01):086-90.
　WANG Xiuyun~.Application of DEM to Calculating the Surface Area of Forest Land[J].Journal of Nanjing Normal University(Engineering and Technology),2006,06(01):086-90.
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DEM在林地资源表面积调查中的应用
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南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

卷:
06卷
期数:
2006年01期
页码:
086-90
栏目:
出版日期:
2006-03-30

文章信息/Info

Title:
Application of DEM to Calculating the Surface Area of Forest Land
作者:
王秀云1;  2;  陈  晔1;  周厚华3;  张  强1
1. 南京师范大学地理科学学院, 江苏南京210097; 2. 宿州学院地理与环境科学系, 安徽宿州234000; 3. 临沂师范学院地理与旅游学院, 山东临沂270015
Author(s):
WANG Xiuyun~
1,2),CHEN Ye~1,ZHOU Houhua~3,ZHANG Qiang~1
关键词:
南京市;  DEM;  林地;  表面积;  正割值
Keywords:
Nanjing c ity;  DEM;  forest land;  surface area;  secant
分类号:
S757.2
摘要:
以南京市为例,借助于G IS软件,首先利用由矢量化等高线生成的DEM数据自动提取坡度信息,然后计算坡度的正割值信息再与南京市的林地栅格数据结合,完成了本区内几种林地在不同坡度级上表面积大小的统计.最后与由坡度信息和土地利用类型栅格数据结合求算的投影面积作比较分析,得出DEM的研制可为林地资源更为精确的统计提供有利的技术支持.
Abstract:
U sing Nan jing city as a case study, this paperm a inly introduces the use of DEM ob tained from contour by d ig itizing the relie fm ap, and the use of gr id them es, which has the same reso lution ( 100m ) as DEM, for the forest land o fN an jing to calcu late surface area o f d iffe rent forest land a t d ifferent slope grades based on GIS. In o rder to finish ca lculating the surface area, slope and secan t should be obta ined at first. Slope can be extracted from DEM au tom atically. Secant can be obta ined from slope inform ation. Comb ined w ith the slope, the forest land and the secant inform ation tog ether, the study w as fin ished to ca lcu la te the surface area o f d ifferen t fo rest land a t different slope g rades. Com paring the surface areaw ith the vertical pro jection area, we can draw a conc lusion that the research on DEM can prov ide the sound support o f ca lculating the fo rest land resources due to G IS.

参考文献/References:

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相似文献/References:

[1]职慧珍,顾正桂.DEM与溶剂等液液平衡数据测定及影响因素关联[J].南京师范大学学报(工程技术版),2004,04(01):067.
　Zhi Huizhen,Gu Zhenggui.Liquid-Liquid Equilibrium Data Determination for DEM and Solvent and Its Correlation with the Affecting Factors[J].Journal of Nanjing Normal University(Engineering and Technology),2004,04(01):067.

备注/Memo

备注/Memo:
作者简介: 王秀云( 1974-) , 女, 讲师, 主要从事遥感与地图制图学和自然地理学的教学与研究. E-m ail:w angxiuyun200081@ eyou. com
更新日期/Last Update: 2013-04-29