| 桂林市NDVI、地表温度的地物特征及相关性研究 |
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| 引用本文： | 梁保平,李艺,陈可宙.桂林市NDVI、地表温度的地物特征及相关性研究[J].遥感技术与应用,2012,27(3):429-435. |
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| 作者姓名： | 梁保平 李艺 陈可宙 |
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| 作者单位： | (广西师范大学环境与资源学院 广西环境工程与保护评价重点实验室,广西 桂林 541004) |
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| 基金项目： | 国家自然科学基金项目，广西环境工程与保护评价重点实验室基金 |
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| 摘 要： | 以桂林市作为研究区域,利用2006年的TM影像数据提取了区域归一化植被指数(NDVI)和地表温度(LST)信息,分析了不同地物类型两参数的统计学特征,进一步探讨了植被指数与地表温度和海拔高度之间的线性关系。结果表明:NDVI均值最大的地物类别为林地,最小的为水体;地表温度均值最高的为建设用地,最小的为林地;从整个区域上看,NDVI与地表温度之间存在明显的负相关关系,NDVI与海拔高度h的相关性呈现分段式特征,在低海拔区域(160 m以下),两者之间相关性不明显,海拔高度超过160 m时,NDVI与海拔高度之间则呈现显著的正相关关系。
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| 关 键 词： | TM影像 桂林市 归一化植被指数 地表温度 |
A Research on Land Features and Correlation between NDVI and Land Surface Temperature in Guilin City |
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| Liang Baoping,Li Yi,Chen Kezhou.A Research on Land Features and Correlation between NDVI and Land Surface Temperature in Guilin City[J].Remote Sensing Technology and Application,2012,27(3):429-435. |
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| Authors: | Liang Baoping Li Yi Chen Kezhou |
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| Affiliation: | (Guangxi Key Laboratory of Environmental Engineering,Protection and Assessment,Guangxi Normal University,Guilin 541004,China) |
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| Abstract: | The information of NDVI and Land Surface Temperature(LST) were extracted based on TM images in 2006 taking Guilin city as an example.Through the contrastive analysis of the two indices statistical characteristics in different landcover types,the paper discusses the linear relationship between NDVI and LST,regional altitude.The results show that the forest have the largest average value of NDVI,water is the minimum;the construction have the highest average value of LST,forest is the minimum.From the whole of the regional perspective,NDVI and LST have a significant negative correlation.The correlation between NDVI and altitude is segmented characteristics,whichis not apparent in low altitude area(160 m),when the altitude of more than 160 m,the correlation of both presents a significantly positive correlation. |
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| Keywords: | TM images Guilin city NDVI LST |
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