中国水土保持科学2025，Vol.23Issue(2)：148-156,9.DOI:10.16843/j.sswc.2024171
沙戈荒地区光伏电站对地表温度的影响
Impact of photovoltaic power field construction on surface temperature in desert and gobi regions:
摘要
Abstract
[Background]Under the dual carbon goals framework,the demand for clean energy continues to grow significantly.China has become the world's largest photovoltaic(PV)production base and application market.However,the construction of large-scale PV power field may exert specific impacts on the thermal environment of both the immediate and surrounding areas.Land surface temperature(LST)serves as a crucial indicator for evaluating PV power fields'environmental impacts.This study therefore focuses on the"Junma Power Field",the world's largest photovoltaic power field featuring a panel array pattern,to systematically assess LST variations before and after its construction.[Methods]The study is based on the Google Earth Engine platform.Landsat 8 images with cloud cover＜5％were acquired for the study area during three periods:before construction(January-June 2017 and 2018),under construction(July-December 2018),and after construction(2019-2023).The obtained images were processed through screening,cloud removal,radiometric and atmospheric correction,clipping,and mosaicking on the platform.LST was then retrieved using the statistical mono-window.Centered on the photovoltaic power fields,buffer zones were created at 100 m intervals to delineate 10 potential impact zones within a 1 km radius around the power field.[Results]1)After the completion of the photovoltaic power field,the average LST within the field was significantly lower than that of the buffer zone,resulting in a distinct"cold island"effect,with a cooling range of 0.28℃-2.82℃.The cooling effect was notably more pronounced compared to areas outside the buffer zone.2)Before and during the construction of the photovoltaic power field,there was little difference in LST between the buffer zones.However,after the field's completion,the LST within the buffer zone became significantly lower than in areas unaffected by the photovoltaic power field,with a maximum decrease of 0.331 ℃.The closer the buffer zone was to the photovoltaic field,the more apparent the temperature difference.The influence of the photovoltaic power field on surrounding LST was primarily concentrated within a 200-meter radius of the field.3)In winter,the"cold island"effect of the photovoltaic field was most pronounced,with a cooling range of 1.91 ℃,followed by summer and autumn.The effect was least noticeable in spring.[Conclusions]The findings of this study hold significant theoretical and practical value for sand control,desertification prevention,and ecosystem restoration in photovoltaic power stations and their surrounding areas within desert and Gobi regions impacted by human activities.关键词
光伏/地表温度/单窗算法/冷岛效应/遥感影像Key words
photovoltaic/land surface temperature/statistical mono-window/cold island effect/remote sensing imagery分类
信息技术与安全科学引用本文复制引用
杨宏伟,李泽东,赵京东,刘永青,白建华,杨晓晖..沙戈荒地区光伏电站对地表温度的影响[J].中国水土保持科学,2025,23(2):148-156,9.基金项目
中国电建集团北京勘测设计研究院有限公司"沙戈荒新能源大基地防沙治沙与生态修复法规政策及典型案例、产业模式研究"(KY20240066) （KY20240066）
