|
|
|
|
  • 软件名称:基于直方图与像元分解模型的森林覆盖度遥感估算
  • 软件大小: 0.00 B
  • 软件评级: ★★★
  • 开 发 商: 董立新
  • 软件来源: 《遥感技术与应用》
  • 解压密码:www.gissky.net

资源简介

摘要: 森林覆盖度是能够勾描出林分边界的森林覆盖率,定量化的覆盖度信息可体现其水平尺度的时空分异特性。像元分解模型在覆盖度遥感估算中得到了广泛应用,但仍然有很多问题,如很难找到一种树冠覆盖度的纯光谱端元,从而难以高精度地估算树冠覆盖度。为此,基于像元分解模型,结合使用土地利用和土壤类型数据,提出利用直方图法确定模型中不同类型植被——土壤端元参数,对区域尺度森林覆盖度进行估算,并利用三峡库区的历史野外161个样点的实测覆盖度数据进行验证,发现R2达到0.74~0.85,计算结果比较满意。该方法将为区域尺度高分辨率森林覆盖度的遥感估算提供借鉴。 关键词: 森林覆盖度;  像元分解模型;  直方图法;  三峡库区;  遥感     Abstract: Forest coverage is the percentage of forest cover for hooking out the forest stand boundary,and quantitative coverage information can be used for describing the temporal and spatial variability of vegetation in the horizontal scale.Pixel decomposition model has been widely used in remote sensing estimation of vegetation coverage.However,there are still many problems.For example,it is difficult to find a pure spectrum of tree canopy coverage to estimate the crown coverage with high accuracy in forest vegetation applications.In this paper,combining land use and soil type data,it is proposed to determine the endmember parameters of the different vegetation-soil types by using the histogram method based on pixel decomposition model for estimating the regional scale forest coverage in the Three Gorges.And the results were verified using the 161 samples of field data in the Three Gorges Reservoir area,R2 was found to be 0.742 4~0.853 6,the estimated results are satisfactory.This method will provide a reference for remote sensing estimation of high-resolution forest coverage at regional scale.

下载说明

·如果您发现该资源不能下载,请通知管理员.gissky@gmail.com

·为确保下载的资源能正常使用,请使用[WinRAR v3.8]或以上版本解压本站资源,缺省解压密码www.gissky.net ,如果是压缩文件为分卷多文件,请依次下载每一个文件,并按照顺序命名为1.rar,2.rar,3.rar...,然后鼠标右击1.rar解压.

·为了保证您快速的下载速度,我们推荐您使用[网际快车]等专业工具下载.

·站内提供的资源纯属学习交流之用,如侵犯您的版权请与我们联系.