| 云南怒江流域植被光谱特征季节变化研究 |
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| 引用本文： | 梁国军,彭明春,程方平,朱先亮.云南怒江流域植被光谱特征季节变化研究[J].安徽农业科学,2011,39(30):18644-18646,18667. |
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| 作者姓名： | 梁国军 彭明春 程方平 朱先亮 |
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| 作者单位： | 1. 重庆地质矿产研究院,重庆400042;外生成矿与矿山环境重庆市重点实验室,重庆400042
2. 云南大学生态学与地植物学研究所,云南昆明,650091 |
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| 摘 要： | 目的]分析云南怒江流域植被的季节变化规律。方法]在大量野外调查和影像分析的基础上,参照《云南植被》将云南怒江流域植被划分为19种自然植被和1种人工林。以2009年TM影像为数据源对保护区植被进行人机交互解译,利用MODIS NDVI数据提取各类型的MODIS NDVI季节变化信息,构建5个光谱特征季节变化指标来对研究区植被进行了全年分析。结果]NDVIjmax：常绿类型大于落叶,森林大于灌丛及灌草丛,草甸类型最小。NDVIjmin：森林类型大于灌丛及灌草丛,草甸类型最小。NDVIjm：常绿阔叶林类型处于较高水平,其次为针叶林类型以及落叶阔叶林、人工林和竹林,灌草丛及草甸类型相对较低,2种草甸类型最小。NDVIjr：一般是落叶大于常绿,灌丛及灌草丛类型大于其他类型,水热好的大于其他区域类型。NDVIja：基本上是森林类型大于灌丛及灌草丛,草甸类型最小。结论]构建的5个光谱特征季节变化指标较好地反映了研究区植被的季节变化规律。
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| 关 键 词： | 季节变化 光谱特征 怒江流域 |
Seasonal Variation of Vegetation Spectral Characteristics at Yunnan Nujiang River Basin |
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| LIANG Guo-jun et al.Seasonal Variation of Vegetation Spectral Characteristics at Yunnan Nujiang River Basin[J].Journal of Anhui Agricultural Sciences,2011,39(30):18644-18646,18667. |
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| Authors: | LIANG Guo-jun |
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| Institution: | LIANG Guo-jun et al(Chongqing Institute of Geology and Mineral Resources,Chongqing 400042) |
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| Abstract: | Objective]The aim was to analyze the seasonal variation law of vegetations in Yunnan Nujiang River basin.Method]Based on comprehensive field survey and image analysis,it developed a classification system for Nujiang River basin based on remote sensing,in which the basic units is reference to the subtype in Yunnan Vegetation.In total,there are 19 types of natural vegetation and plantation forest.Make use of TM images in 2009 as data source to interpret the vegetation on the protected areas by human-compute... |
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| Keywords: | Seasonal variation Spectral characteristics Nujiang River basin |
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