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题名: 基于GWR 模型的土地覆盖与地表温度的关系以京津唐城市群为例
作者: 王佳; 钱雨果; 韩立建; 周伟奇
刊名: 应用生态学报
出版日期: 2016
卷号: 27, 期号:7, 页码:2128-2136
关键词: 京津唐城市群 ; 土地覆盖 ; 地表温度 ; 地理加权回归 ; 空间非平稳性
其他题名: Relationship between land surface temperature and land cover types based on GWR model: A case of Beijing-Tianjin-Tangshan urban agglomeration,China
中文摘要: 基于Landsat TM 土地覆盖分类数据和MODIS 地表温度数据,探讨京津唐城市群不同土地覆盖的地表温度(7日),并采用常用的普通线性回归(OLS)和地理加权回归(GWR)方法分别拟合土地覆盖比例与地表温度的关系.结果表明: 研究区不同土地覆盖类型的地表温度差异明显,人工表面(40.92 3.49 ℃)和耕地(39.74 3.74 ℃)的平均温度较高,林地(34.43 4.16 ℃)和湿地(35.42 4.33 ℃)的平均温度较低; 土地覆盖比例与地表温度显著相关,且两者之间的定量关系存在空间非稳定性,地理位置以及周围环境影响的差异是空间非稳定性产生的主要原因; GWR 模型的拟合结果优于OLS 模型(R_(GWR)~2>R_(OLS)~2 ),并且GWR 模型可以量化土地覆盖比例与地表温度两者关系的空间非稳定性特征.
部门归属: 城市与区域生态国家重点实验室
英文摘要: We used land cover data derived from Landsat thematic mapper ( TM) and land surface temperature ( LST) data from moderate-resolution imaging spectro-radiometer ( MODIS) satellite images to study the variations in LST in July of different land cover types in Beijing-Tianjin-Tangshan urban agglomeration. Ordinary linear regressions ( OLS) models and geographically weighted regressions( GWR) models were used to investigate the relationships between the proportions of land cover types and LST. The results showed that great variations in LST occurred among different land cover types. The average LST ranged from high to low in the order of developed land ( 40.92 3.49 ℃) ,cultivated land ( 39.74 3.74 ℃) ,wetland ( 35.42 4.33 ℃) ,and forested land ( 34.43 4.16 ℃) . The proportions of land cover types were significantly related to LST,but with spatial non-stationarity. This might be due to inherent difference in land cover across locations,and the surrounding environments. GWR models had higher R2 values,compared to OLS,indicating better model performance. In addition,GWR models could reveal the spatial non-stationarity of the relations between LST and the proportions of different land cover types.
收录类别: CSCD
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内容类型: 期刊论文
URI标识: http://ir.rcees.ac.cn/handle/311016/36500
Appears in Collections:城市与区域生态国家重点实验室_期刊论文

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Recommended Citation:
王佳,钱雨果,韩立建,等. 基于GWR 模型的土地覆盖与地表温度的关系以京津唐城市群为例[J]. 应用生态学报,2016,27(7):2128-2136.
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