内蒙古中部草原区光伏电站对土壤水分及其脉冲响应的作用机制  

MECHANISM OF PHOTOVOLTAIC POWER STATION ON SOIL MOISTURE AND ITS IMPULSE RESPONSE IN GRASSLAND REGION OF CENTRAL INNER MONGOLIA

作　　者：翟波 高永 党晓宏 蒙仲举 徐立杰 刘子剑 Zhai Bo;Gao Yong;Dang Xiaohong;Meng Zhongju;Xu Lijie;Liu Zijian(College of Desert Science and Engineering,Inner Mongolia Agricultural University,Hohhot 010018,China;Inner Mongolia Hangjin Desert Ecological Position Research Station,Ordos 017400,China)

机构地区：[1]内蒙古农业大学沙漠治理学院,呼和浩特010018 [2]内蒙古杭锦荒漠生态系统国家定位观测研究站,鄂尔多斯017400

出　　处：《太阳能学报》2022年第6期49-56,共8页Acta Energiae Solaris Sinica

基　　金：内蒙古自治区高等学校科研项目(NJZY19052);中央引导地方科技发展专项资金:内蒙古荒漠化防治创新研究中心和内蒙古自治区第十届“草原英才”(PC201907220608)项目联合资助。

摘　　要：针对内蒙古草原地区光伏电站对降雨的再分配作用下土壤水分空间变异规律及其对降水事件的脉冲响应特征,对草原地区光伏组件下的土壤水分时空特征进行持续观测,并确定光伏组件干扰下的气象因子与土壤水分的关系,最终通过参数估计厘清光伏组件对土壤水分脉冲响应的作用机制。结果表明:光伏组件前檐下方的土壤总储水量整体高于组件下方和未架设组件区域的土壤储水量;光伏组件前檐的各土层储水量对降水的响应均较强,光伏组件下各层土壤储水量对降水无明显响应过程;光伏组件下大气湿度与0~10、10~20和20~30 cm土层储水量的相关系数分别为0.889、0.579和0.414;光伏组件前檐10、20和30 cm土层的含水量对降水量的脉冲响应方程R分别为0.875、0.938和0.957,降水量的补给对0~30 cm土层的脉冲事件均产生促进作用。未架设组件区域的20 cm土层含水量对自然降水有较好的响应过程。Aiming at the spatial variability of soil moisture under the redistribution of rainfall by photovoltaic power stations in Inner Mongolia grassland and its impulse response characteristics to precipitation events,continuously observe the temporal and spatial characteristics of soil moisture under photovoltaic panels in grassland areas were continously observed,and analyze the relationship between meteorological factors and soil moisture under photovoltaic panel interference was determinded.Finally clarify the influence mechanism of photovoltaic panels on soil moisture impulse response was clarified through parameter estimation.The results show that the total water storage capacity of the soil under the front eaves of the photovoltaic panels is higher than the soil water storage capacity under the photovoltaic panels and the areas where photovoltaic panels are not installed.The soil water storage of each layer of the front eaves of the photovoltaic panel has a strong response to precipitation.The soil water storage in each layer under the photovoltaic panel has no obvious response process to precipitation;The correlation coefficients between atmospheric humidity and 0-10 cm,10-20 cm and20-30 cm soil water storage are 0.889,0.579 and 0.414;The pulse equation R~2 of the moisture content of the 10 cm,20 cm and 30 cm soil layer of the photovoltaic panel front eaves and the natural precipitation is 0.875,0.938,0.957,the replenishment of precipitation promotes the pulse responses of the 0-30 cm soil layer moisture.The water content of the 0-20 cm soil layer in the area where photovoltaic panels are not installed has a good response process to natural precipitation.

关 键 词：光伏电站 土壤含水量 降水(气象学) 环境因子 脉冲反应 

分 类 号：S214.9[农业科学—农业机械化工程]