风电场对不同草地类型地表温度和蒸散发的影响研究

风电场强烈改变着地表温度（LST）及蒸散发（ET）过程。利用遥感手段探讨风电场对LST、ET的影响距离及多年变化趋势已成为国际上的研究热点，而针对我国风电场进行的类似研究明显不足，尤其缺少在不同地表类型中风电场的对比研究。针对这一问题，本研究拟分别在内蒙古典型草原、荒漠草原、科尔沁沙地建立实验区，以多源遥感数据集成为支撑，以样地实验与观测为手段，以LST及ET的遥感模拟为核心，评价风电场对不同草地类型LST及ET的影响。主要研究内容：（1）判定在不同风速、风向及季节条件下，风电场对不同草地类型LST及ET的影响距离；（2）分析影响距离内草地LST及ET的多年变化趋势，对比该变化趋势的季节性差异；（3）结合草地类型、植被覆盖、地形条件等因素，探讨影响距离区间划分及多年变化趋势的主要因素。本研究为准确理解风电场对草原气候影响提供前期基础，同时为探讨风电场对草业资源可持续的影响具有重要意义。

Land surface temperature (LST) and the process of evapotranspiration (ET) are strongly influenced by wind farms. Researching the influential distance of wind farms on LST, ET and its years of change trend based on remote sensing method has become an international research hotspot. However, the similar research conducted on China’s wind farms is obviously insufficient, especially for the lack of the comparative study of wind farms in the different land surface types. To solve this problem, this project intends to establish experimental zones in typical steppe, Horqin sandy land, and desert steppe of Inner Mongolia. In addition, supported by data integration platform, it takes experimental plots as means and the simulation of LST and ET as the core based on remote sensing. The main contents of the project are: (1) to judge the distances of LST and ET of different grassland types in different wind speed, wind direction and seasonal conditions;(2) to analyze the change trend of LST and ET in different grassland types, and to compare the seasonal differences of the trends;(3) to discuss the main factors which may affect the interval division of distances and the trends by considering the grassland types, vegetation cover, terrain conditions. The research result of this project has important theoretical significance and application in understanding the impact of wind farms on steppe climate and correctly understanding sustainable development of pratacultural resources.