探讨合肥市绿地景观结构特点及其降温效应

以我国中东部城市合肥市为研究对象，选取了具有代表性的景观区域为研究范围，根据城市气候调查和小气候观测，应用景观生态学的相关理论，探讨城市绿地案观结构、城市热岛的特点以及二者关系。对热岛强度和影响城市温度的温室气体CO2等的观测表明，合肥的热岛强度和热岛中心均随季节变化而变化。争季热岛中心位于市中心，夏季热岛中心分裂为3个，分别位于绿化程度低的地区。热岛强度的日变化出现两个峰值，分别为8：00、16：00。接着分析合肥市中部、东部、西部和北部等温线。最后与城市园林研究的特点相结合，研究绿地景观的降温效应，对合肥市城市绿地生态建设提出了建议。

Discussion on the Influence of Landscape Structure on the Urban Heat Island Effect of Hefei City

Taking Hefei,one of the cities in the middle and eastern regions of China as the research object,selecting representative landscape region as the research scope,with the aid of the urban climate investigation and the microclimate observation,applying the related theory of landscape ecology,the city green space landscape structure,the city heat island characteristic as well as the their relation were discussed.The observation on the heat island intensity and the greenhouse gas that affected the urban temperature showed that the heat island intensity and the heat island center of Hefei changed with the seasonal variation.The winter heat island center was located in the town center,the summer heat island center fissioned to three,which were located the area with low afforested degree separately.The heat island intensity daily variation appeared two peak values,at 8:00 and 16:00 respectively.Then the isothermal in the middle,eastern part,west and north areas of Hefei were analyzed.Finally,combining with the characteristics of city botanical garden research,the temperature decrease effect of green space landscape was studied.And some proposals were put forward for the city green space ecology construction of Hefei.