水利学报2023，Vol.54Issue(11)：1371-1379,9.DOI:10.13243/j.cnki.slxb.20230387
双向"锅盖效应"诱发戈壁荒漠长草机制分析
Mechanism analysis of grass growing in Gobi Desert induced by two-way"pot cover effect"
摘要
Abstract
The Gobi Desert in Northwest China is a barren land with an arid climate.However,after the comple-tion of the Taratan photovoltaic power station,there is a phenomenon of grass growing in a large area.In this pa-per,we explore the possible sources of weed growth in PV power station.The induced mechanism of two-way"pot cover effect"was initially investigated from a qualitative perspective.The temperature and moisture patterns of the shallow soil at three measurement points and the atmosphere were analyzed by comparing the PV panel area with the non-PV panel area,and a simple quantitative analysis of the annual and daily cycle moisture patterns of the two-way"pot cover effect"was conducted.The results show that the combined factors of PV panels and hardened ground cover induce two-way"pot cover effect".The PV panels can significantly reduce the surface temperature of soil in summer.The positive"pot cover effect"is dominant in winter and spring,which is the main moisture sup-ply to maintain the survival of weeds in the shallow soil layer,and the annual circulating water increases by about 11％～20％.However,the reverse"pot cover effect"is dominant in summer and early autumn,which ensures that the daily moisture demand of weeds fluctuates within a small range.The relevant research in this paper can also provide reference for desert sand control.关键词
光伏电站/野草/双向"锅盖效应"/温度变化/水分变化Key words
photovoltaic power station/wild grass/two-way"pot cover effect"/temperature variation/water vari-ation分类
建筑与水利引用本文复制引用
姚仰平,孙国超,王乃东,段志刚..双向"锅盖效应"诱发戈壁荒漠长草机制分析[J].水利学报,2023,54(11):1371-1379,9.基金项目
国家自然科学基金项目(51979001,52238007) （51979001,52238007）
