新疆大学新疆维吾尔自治区绿洲生态重点实验室,干旱生态环境研究所,资源与环境科学学院
纸质出版:2012
移动端阅览
[1]师庆东,师庆三,刘曼.中国西部干旱区植被的遥感分类研究[J].新疆大学学报(自然科学版),2012,29(04):390-394+420+376.
师庆东, 师庆三, 刘曼. 中国西部干旱区植被的遥感分类研究[J]. Journal of Xinjiang University (Natural Science Edition in Chinese and English), 2012, 29(4): 390-394.
中国西部干旱区气候、土壤、水文、光热、植被等环境因子有着显著的地域差异
若只依靠单一的植被光谱信息来进行准确分类是相当困难的
需要开展基于先验知识、地理信息和遥感信息的分类方法.本文在使用了多种分类方法后
采用了分区分海拔的方法
即将植物的区系理论和植物的纬向、经向和垂直地带性分布特征通过地理信息系统给予知识化的表达
在这些先验知识的基础上叠加植被的光谱特征进行分类.按照这种分类方法
笔者对中国西部干旱区采用分区分类
将整个研究区按地理特点分为三个子研究区:北疆地区
东疆-南疆地区
柴达木盆地-阿拉善地区.每个子区按海拔又分为两个部分
实际上将研究区分为3个子区6个部分
分区的主要原则是植物的区系以及植被的垂直分布、纬向和经向空间分布特点.并在局部地区对分类结果进行了验证
取得了较好的效果
为同类研究提供了一种参考思路和方法.
There differs greartly in climate
soil
hydrology
radiation
vegetation
etc.in the western arid land of China.Because it was rather diffcult to improve the precision of vegetation classification just relying on the spectrum information of remote sensing
it must develop a new classification method based on the integration of known knowledge
geographical factors and remote sensing data.After employed many classification methods
this paper gives the sub-region/sub-elevation method
in which all knowledge have been expressed by mean of GIS on the basis of combining the floral region system with the latitudinal
longitudinal and vertical distribution characteristics of vegetation
and then overlaid the spectrum characteristics to classify vegetation.Through validated in a small area
this work obtained preferable results and could supply references to the relative research works.
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