文献类型：期刊文献

中文题名：荒漠光伏电站人工植被恢复对土壤有机碳组分的影响

英文题名：Impact of artificial vegetation restoration on soil organic carbon component in desert photovoltaic power stations

作者：翟波[1] 党晓宏[2] 刘湘杰[3] 暴向平[1] 樊才睿[1]

第一作者：翟波

机构：[1]集宁师范学院地理科学与规划学院,内蒙古乌兰察布012000;[2]内蒙古农业大学沙漠治理学院,呼和浩特010018;[3]中国林业科学研究院沙漠林业实验中心,内蒙古巴彦淖尔015200

年份：2026

卷号：31

期号：1

起止页码：180-192

中文期刊名：中国农业大学学报

外文期刊名：Journal of China Agricultural University

收录：;北大核心:【北大核心2023】；

基金：内蒙古自治区高等学校加强我国北方重要生态安全屏障建设研究专项;内蒙古自然科学基金项目(2024QN04023);集宁师范学院博士创新科研基金项目(jsbsjj2412);内蒙古自然科学基金项目(2024MS05053)。

语种：中文

中文关键词：荒漠光伏电站;植被恢复;土壤有机碳组分;土壤含水量体积浓度;通径分析

外文关键词：desert photovoltaic power station;vegetation restoration;soil organic carbon components;soil water content volume concentration;path analysis

分类号：S152.7

摘要：为厘清荒漠地区光伏电站人工植被恢复对土壤有机碳系统所产生的影响和扰动机理,以库布齐沙漠光伏电站为研究区域。采用野外观测法对光伏阵列内不同位置(光伏板前、板间、板后)的杂花苜蓿和糜子种群特征(盖度、密度、高度、生物量)进行量化,对植被调查样点及板下和对照处的不同土层土壤含水量体积浓度和有机碳组分(有机碳、易氧化有机碳、可溶性有机碳、热水溶性有机碳、水溶解性有机碳、微生物量碳)进行室内测定,并通过相关性分析和通径分析得出土壤水分环境和种群特征对土壤有机碳组分再分配的贡献率。结果表明:1)光伏阵列内不同位置的杂花苜蓿和糜子的种群特征产生显著差异。板间与板前的各指标均具有显著性差异(P<0.05),板间杂花苜蓿生物量较板前和板后分别增加了154.20%和79.77%。2)土壤有机碳组分对光伏阵列内不同位置的反馈呈现出一定规律性,各位置表层土壤有机碳组分含量整体大于深层土壤。板间0—5 cm土层有机碳含量相比板前、板后、板下和CK分别增加了24.30%、44.74%、59.15%和35.37%。深层土壤有机碳组分在板间和板后2个位置含量较高,其中板间土壤有机碳组分含量最高。3)光伏阵列内板间和板后的土壤含水量体积浓度相比其他位置优势明显。土壤含水量体积浓度的变化对土壤有机碳组分产生了促进作用,其与土壤微生物量碳的相关系数为0.928。4)土壤有机碳和人工植被种群特征的通径分析结果表明,糜子的密度和杂花苜蓿的高度是影响板前土壤有机碳的关键因素;糜子生物量是影响板间土壤有机碳的重要因子;杂花苜蓿的生物量对板后土壤有机碳含量增加的贡献率最高。综上,光伏阵列通过对杂花苜蓿+糜子人工植被生长进行调控,促进了板间和板后的种群生物量,提升了土壤含水量的同时显著增加了电站内土壤有机碳组分含量。
To clarify the impact and disturbance mechanisms of artificial vegetation restoration on the soil organic carbon system in photovoltaic power stations in desert areas,the Kubuqi desert photovoltaic power station was selected as the study area.Field observation methods were utilized to quantify the population characteristics,e.g.,coverage,density,height,and biomass,of Medicago rivularis and Panicum miliaceum at various locations within the photovoltaic array(in front of,between,and behind the photovoltaic panel).Indoor measurements of soil water content volume concentration and organic carbon components(organic carbon,readily oxidizable carbon,dissolved organic carbon,hot-water extractable organic carbon,water extractable organic carbon and microbial biomass carbon)in various soil layers at vegetation survey sample points were conducted.By using correlation analysis and path analysis,the contribution rates of soil moisture environment and population characteristics to the redistribution of soil organic carbon components were then determined.The results indicate that:1)The population characteristics of M.rivularis and P.miliaceum exhibited significant differences at various locations within the photovoltaic array.All indicators between and in front of photovoltaic panels showed significant differences(P<0.05).Compared to that in front of and behind the panels,the biomass of M.rivularis between the panels increased by 154.20%and 79.77%,respectively.2)The feedback of soil organic carbon components at different positions within the photovoltaic array exhibits a certain regularity.The content of organic carbon components in surface soil at various locations is generally greater than that in deep soil.Compared to that in front of the panel,behind the panel,under the panel,and CK,the organic carbon content in the 0 to 5 cm soil layer between photovoltaic panels increased by 24.30%,44.74%,59.15%and 35.37%,respectively.The organic carbon component content in deep soil was relatively high between and behind the photovoltaic panels,and the highest level was found between the photovoltaic panels.3)The soil water content volume concentration between and behind the photovoltaic panels showed a significant advantage compared to that in other positions.The variation in soil water content volume concentration had a promoting effect on soil organic carbon components,with a correlation coefficient of 0.928 with soil microbial biomass carbon.4)The results of path analysis on soil organic carbon and artificial vegetation population characteristics indicate that the density of P.miliaceum and the height of M.rivularis are the key factors affecting the soil organic carbon in front of the photovoltaic panel;The biomass of P.miliaceum is a significant factor influencing the soil organic carbon between photovoltaic panels;The biomass of M.rivularis contributes the most to the increase in soil organic carbon content behind the photovoltaic panels.In conclusion,t he photovoltaic array enhances the biomass of the population both between and behind the panels by regulating the growth of the artificial vegetation of M.rivularis and P.miliaceum,while enhancing soil volumetric water content and significantly increasing the content of soil organic carbon components within the power station.