The Observed Impacts of Wind Farms on Local Vegetation Growth in Northern China
The Observed Impacts of Wind Farms on Local Vegetation Growth in Northern China
复制标题
风电场对中国北方当地植被生长的影响观察
DOI：
10.3390/rs9040332
复制
发表时间：
2017-04-01
期刊：
影响因子：
5
通讯作者：
Wei, Hong
中科院分区：
文献类型：
--
作者：
Tang, Bijian;Wu, Donghai;Wei, Hong
风电场（WFs）可以影响当地气候，而当地气候变化可能会影响下面的植被。一些研究表明，WFs影响区域气候的某些方面，如温度和降雨。然而，目前仍没有证据表明WFs是否会影响当地植被生长，这是WFs影响整体评估的重要组成部分。基于2003 - 2014年MODIS植被指数、生产力等遥感数据，分析了夏季（6 - 8月）坝上地区WFs对植被生长和生产力的影响。结果表明：(1)WFs对植被生长具有显著的抑制作用，2003-2014年夏季，WFs对植被生长的抑制作用表现为叶面积指数（LAI）、增强植被指数（EVI）和归一化植被指数（NDVI）分别降低了约14.5%、14.8%和8.9%。对夏季总初级生产量（GPP）和年净初级生产量（NPP）的抑制效应分别为8.9%和4.0%；(2)温度和土壤湿度的变化可能是主要影响因子：WFs抑制了研究区土壤湿度，加剧了水分胁迫。本研究提供了重要的观测证据，表明WFs可以抑制下伏植被的生长和生产力。
Wind farms (WFs) can affect the local climate, and local climate change may influence underlying vegetation. Some studies have shown that WFs affect certain aspects of the regional climate, such as temperature and rainfall. However, there is still no evidence to demonstrate whether WFs can affect local vegetation growth, a significant part of the overall assessment of WF effects. In this research, based on the moderate-resolution imaging spectroradiometer (MODIS) vegetation index, productivity and other remote-sensing data from 2003 to 2014, the effects of WFs in the Bashang area of Northern China on vegetation growth and productivity in the summer (June–August) were analyzed. The results showed that: (1) WFs had a significant inhibiting effect on vegetation growth, as demonstrated by decreases in the leaf area index (LAI), the enhanced vegetation index (EVI), and the normalized difference vegetation index (NDVI) of approximately 14.5%, 14.8%, and 8.9%, respectively, in the 2003–2014 summers. There was also an inhibiting effect of 8.9% on summer gross primary production (GPP) and 4.0% on annual net primary production (NPP) coupled with WFs; and (2) the major impact factors might be the changes in temperature and soil moisture: WFs suppressed soil moisture and enhanced water stress in the study area. This research provides significant observational evidence that WFs can inhibit the growth and productivity of the underlying vegetation.