基于Landsat系列卫星的地表温度与植被覆盖度关系研究——以北京密云区为例

Study on the Relationship between Miyun Land Surface Temperature and Vegetation Coverage Based on Landsat Series Satellite

该文通过2016年的Landsat 8卫星数据,解译了北京密云区2016年的土地利用数据。通过2005、2016年的TM/TIRS的热红外波段和NDVI值反演了密云区的地表温度和植被覆盖度。结果显示:2005—2016年,密云区地表温度升高,城市热岛效应明显;植被覆盖度与地表温度呈负相关关系,植被覆盖度越低,人工表面聚集度指数与分离度指数越高,地表温度会越高,而植被覆盖度越高、人工表面分离度越高,越能够缓解热岛效应。

The article uses the 2016 Landsat 8 satellite data to interpret the land use data.The landsurface temperature and vegetation coverage of miyun region were reflected through the thermal infrared band and NDVI value of TM/ TIRS in 2005 and 2016.The results indicated that the landsurface temperature in Miyun County increased and the urban heat island effect highlight during 2005-2016.The vegetation coverage was negatively correlated with landsur- face temperature.The vegetation coverage more lower and the concentration index and the separation index of artificial surface more higher, the surface temperature will be more higher.The vegetation coverage more higher and the splitting index of artificial surface more higher, the mitigating effects of the heat island effect will be more remark- able.