黄河中下游典型地区农业景观格局的热环境效应——以中牟县为例

利用1988年和2007年的遥感数据,借助于地理信息系统技术,分析黄河中下游地区中牟县农业景观格局动态,采用单窗算法定量反演研究区的地表温度,尝试对农业景观格局的热环境效应进行探讨.结果发现,研究区近20年景观格局变化显著,地表温度对此动态有明显响应.不同景观类型的地表温度差异较大,1988年旱地景观和2007年未利用地景观的地表温度均比河渠高出10℃以上,而本研究区建设用地景观对地表温度影响作用偏小.距河渠景观较近的廊道缓冲区平均地表温度较低,而趋向道路中心线时其缓冲区的地表温度升高.研究表明,相比前人在城市景观热环境效应研究所得结论,农业景观格局对区域热环境有自己独特而重要的影响.

Agricultural Landscape Pattern Effect Linked with Thermal Environment in Typical Area of the Middle and Lower Reach of the Yellow River:A Case Study of Zhongmou County

Based on 1988 and 2007 remote sensing data,geographic information system technology was used to carry out the agricultural landscape pattern changes detection in Zhongmou county and retrieve out the land surface temperature by using single Landsat TM 6 thermal infrared data.The thermal environment effect of typical agricultural region landscape pattern was discussed in the Middle-Lower Yellow River Basin.The results found that landscape pattern changed significantly in the study area during nearly twenty years and the land surface temperature responded to this dynamic obviously.The land surface temperature in different landscape types was rather different.The average land surface temperature of the hottest landscape types in 1988 and in 2007 were above 10 ℃ higher than the river,but the construction land was not the most important favors of the temperature changes in this research area.The buffer zones of river corridor had lower temperature at shorter range,and with approaching to the road centerline the land surface temperature increased slightly.Research showed that compared with thermal environment effect of the urban landscape conclusion,agricultural landscape pattern had a unique and important influence on regional thermal environment.