桂林理工大学学报2015，Vol.35Issue(3)：482-489,8.DOI:10.3969/j.issn.1674-9057.2015.03.008
遥感和GIS技术支持下的乐山城市"绿心"地温特征
Ground temperature feature inL eshan"Green Heart"based on remote sensing and GIS
摘要
Abstract
Because of large area, high terrain, near river, and good vegetation coverage, Leshan "Green Heart" becomes important landscape in adjusting urban ecological environment. Multi-temporal Landsat-5 TM remote sensed data and GIS technology are used to extract ground temperature.The results show that ground temperature of maximum, minimum, average, and standard deviation rises from low to high, then falls in the four seasons.The four indicators show the basic law of the Green Heart<the built-up area<the Leshan area. The relative low temperature characteristic of Green Heart is most stable . The average ground temperature of Green Heart is 11.16-29.71 ℃, from lowest winter to highest summer.The cooling effect of Green Heart be-comes significant when the ground temperature rises.Green Heart average ground temperature is 1.29 ℃ lower than the built-up area, 0.13 ℃ lower than the Leshan area.Green island effect is very obvious.The standard deviation of Green Heart ground temperature is 1.54 ℃, 3.30 ℃ lower than the built-up area, and 1.46 ℃lower than the Leshan area.Ground temperature distribution of the Green heart is concentrated.The ground temperature of Green Heart is 2.00 ℃ lower than the small green-land in built-up area, its magnitude effects of cooling is significant.In the relationship of ground temperature, vegetation, humidity, temperature, Green Heart multi-ecological study is significant.关键词
TM遥感数据/植被覆盖度/比辐射率/地温/绿岛效应/乐山Key words
TM remote sensed data/vegetation coverage/specific radiance/ground temperature/green island effect/Leshan分类
资源环境引用本文复制引用
赵银兵,倪忠云,郭善云,刘洋,魏云,周宇航..遥感和GIS技术支持下的乐山城市"绿心"地温特征[J].桂林理工大学学报,2015,35(3):482-489,8.基金项目
教育部新教师基金项目 (20105122120014) （20105122120014）
四川省教育厅重点项目 (11ZA048) （11ZA048）
成都理工大学中青年骨干教师培养计划、 成都理工大学城乡规划教学创新团队计划项目 (KYTD201403) （KYTD201403）
