摘要
利用2000年—2014年的MOD16数据,采用线性趋势分析的方法,分别对内蒙古灰腾梁风电场及该电厂50 km缓冲区内,风电场建设之前的2000年—2008年、风电场建设之后的2008年—2014年及2000年—2014年的草地生态系统区域年蒸散发(ET)进行了分析;同时结合2000年—2014年的风向频率数据,重点探讨了不同风向频率下ET的具体变化幅度,最终得到了如下的结论:(1)风电场会加快地表ET,风电场对ET的影响距离可达到50 km以上。(2)同其它风向区域相比,风电场上、下风区对ET的影响程度更大。(3)风电场下风区对ET的影响程度最大,在剔除ET自然变化趋势的影响后,下风处ET以141.05 mm·年^(-1)的速度上升。(4)ET持续上升可能会对局地草地资源的可持续性发展产生影响,随着风电场更大规模的建设,这是一个值得警惕和关注的问题。本研究期待为风电场的建设、探讨风电场对草业资源的可更新性,可持续性利用等方面的影响提供借鉴。
Current investigations largely focus on vegetation, soil and animal disturbance due to wind farm construction, as well as focusing on possible impacts to the surrounding land surface temperature and regional meteorology. The construction and operation of wind farms significantly reduce wind speed in the leeward direction which affects ET （regional surface evapotranspiration）. Utilizing MOD16 data from 2000 to 2014, ET change in a 50 km buffer area around the Huitengliang wind farm, Inner Mongolia, was analyzed. Combining meteorological data in this analysis, the impact of wind direction on ET was discussed. Compared with the construction phase （2000-2008）, the operation phase （2008-2014） had a more obvious impact on ET. The results are as follows. （1） Wind farm accelerated the ET process; the impacts of wind farm on ET distance could reach more than 50 km. （2） the influencing mechanisms of a wind farm on ET differed within and outside of the farm area. This paper showed that the proportion of ET rising range in the wind farm area, windward/leeward area, was much higher than in the buffer areas. （3） On the windward side, the area of greatest ET impact from the wind farm, the ET rose at 141.05 mm each year in the windward area. （4） Currently, China＇s energy policies are gradually turning to utilizing wind energy. Although there are many positive environmental benefits that wind energy provides, the rising ET may have a negative impact on sustainable development of local grassland resources. This paper will provide a reference for wind farm construction, conservation and restoration of vegetation and environmental improvement.
作者
李国庆
刘志锋
常学礼
张蒙
LI Guoqing LIU Zhifeng CHANG Xueli ZHANG Meng(School of Resources and Environmental Engineering, Ludong University, Yantai 264025, China State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing 100875, China College of Resources Science and Technology, Beijing Normal University, Beijing 100875, China)
出处
《生态科学》
CSCD
2016年第6期146-151,共6页
Ecological Science
基金
山东省高等学校科技计划(J16LH51)
国家自然科学基金青年基金项目(41601598
41501195)资助
地表过程与资源生态国家重点实验室人才培养项目(2015-RC-01)
关键词
风电场
蒸散发
灰腾梁
草地
Wind farm
evapotranspiration
Huitengliang
grassland
