摘要
采用遥感和地理信息系统相结合的方法,研究了上海市城区绿地和温度场分布现状,以及绿地对周边温度场的影响,指出了中巴资源一号卫星热红外通道的热场等值线图能精确细致地反映热场的分布状况。通过选取相对独立的绿地缓冲分析区域,研究温度场中低温百分比和绿地面积的关系,建立和给出绿地对温度场影响距离的拟合公式,从而初步得出绿地对温度场的影响规律。
In the past several years, Shanghai highly extends its greenbelt. In urban planning, governors urgently wonder how much green area is reasonable. The suitable green area can not only reduce the peripheral temperature, but also have moderate bound to decrease the fee of demolishing residential districts. In this paper, the method combining the remote sensing and geographic information system is used to analyzing the current urban greenbeh and thermal distribution. Thermal isoline shaped with China- Brazil Resources satellite No. 1 infrared band reflects detailed thermal distribution. Relatively isolated greenbelts are buffered to do pretreatment with Arc/info soft for cutting overlapping area, then these regions become the analysis area. There is good relation between low temperature and green area by analyzing separate green buffer area, which gives fitting formula to calculate the distance of thermal influence around the greenbelt. Therefore, urban greenbelt is the main factor influencing temperature. But in some special conditions, the temperature around the greenbelt fluctuates with strong thermal source, dense high building, ground character.
出处
《遥感技术与应用》
CSCD
2005年第5期496-500,共5页
Remote Sensing Technology and Application
