植物叶功能性状对光伏组件遮阴的响应与生态策略  

Responses of Leaf Functional Traits to Partial Shading of a Photovoltaic Array and Their Different Ecological Strategies

作　　者：罗久富 罗忠新 赵世麒 吴赛男[1,2] 罗小林 隋欣 LUO Jiu-fu;LUO Zhong-xin;ZHAO Shi-qi;WU Sai-nan;LUO Xiao-lin;SUI Xin(China Institute of Water Resources and Hydropower Research,Beijing 100038,P.R.China;National Research Center for Sustainable Hydropower Development,Beijing 100038,P.R.China;SPIC Yunnan International Power Investment Co.Ltd.,Kunming Yunnan 650228,P.R.China)

机构地区：[1]中国水利水电科学研究院,北京100038 [2]国家水电可持续发展研究中心,北京100038 [3]国家电投云南国际电力投资有限公司,云南昆明650228

出　　处：《西部林业科学》2022年第4期48-53,67,共7页Journal of West China Forestry Science

基　　金：中国水利水电科学研究院成果转化资金专项(SS1003A032020);技术咨询项目(SS0203A192021);技术服务项目(SS0203A312021);中国科学院学部咨询评议项目(2021-JS01-B-011)。

摘　　要：植物生态策略是石漠化光伏场区植被恢复的关键。以石漠化光伏场区2种典型生境(光伏板间和板下)中4种植被恢复植物(鹅掌柴、红花檵木、假连翘、黄金菊)为研究对象,通过可塑性指数等综合分析其鲜质量、干质量、含水率、厚度、面积、比叶面积、体积、组织密度8个叶功能性状在2种生境下的差异及生态策略。结果显示:(1)叶功能性状可塑性大小为黄金菊>鹅掌柴>假连翘>红花檵木,叶含水率是4种植物共同的惰性响应性状;(2)光伏板遮阴后,4种植物叶片含水率和叶面积增加,叶组织密度降低;鹅掌柴和黄金菊增加叶厚、叶鲜质量和叶干质量实现物质积累;红花檵木、假连翘形成较大比叶面积和较低叶鲜质量、叶干质量等增强光资源获取但是降低物质积累的功能性状组合;(3)影响石漠化光伏场区植物功能性状的主要因素是物种、生境及二者的交互作用。可得结论,石漠化区光伏板遮阴激发植物对资源获取功能的投资,降低植物抗机械强度能力,但是在物质积累方面存在种间差异,鹅掌柴和黄金菊采取促进物质积累积极生态策略,而红花檵木和假连翘倾向采取增加资源获取和降低生长速率的积极和保守协同的策略。植物对异质性生境的功能性状组合反映其生态策略,为石漠化光伏场区植被恢复提供科技支撑。Plants ecological strategies play key roles in revegetation of photovoltaic power station in rocky desertification zone.Data from Schefflera heptaphylla,Loropetalum chinense var.rubrum,Duranta erecta,Euryops pectinatus between and under the photovoltaic panels in the rocky desertification zone were used to test whether leaf functional traits provides insight to ecological strategies.Furthermore,eight leaf functional traits including leaf fresh weight(LFW),leaf dry weight(LDW),leaf water content(LWC),leaf thickness(LT),leaf area(LA),specific leaf area(SLA),leaf volume(LV),leaf tissue density(LTD)were selected to analyze differences of leaf functional traits and ecological strategies.The results showed that:1)The leaf phenotypic plasticity were,E.pectinatus>S.heptaphylla>D.erecta>L.chinense var.rubrum;2)Across shading intensifying,LWC and LA of the four plants increased and LTD decreased inversely;E.pectinatus and S.heptaphylla raised LT,LFW and LDW to achieve matter accumulation;D.erecta and L.chinense var.rubrum developed leaf traits that enhanced light resources acquisition but weaken matter accumulation,such as larger SLA,lower LFW and LDW;3)Species,habitat and their interaction were the major factors affecting the leaf traits.Therefore,photovoltaic panels shading stimulates investment of plants resource acquisition and reduces plants mechanical strength resistance ability in rocky desertification zone.However,there are interspecies differences in matter accumulation.E.pectinatus and S.heptaphylla tend to adopt active strategies to promote material accumulation,while L.chinense var.rubrum and D.erecta increase resource acquisition but reduce growth rate by adopting active and conservative synergistic strategies.Plants functional traits combinations in heterogeneous habitats imply different ecological strategies thus seem likely to provide useful information for revegetation of photovoltaic power station in rocky desertification zone.

关 键 词：石漠化 光伏 叶功能性状 表型可塑性 生态策略 植被恢复 

分 类 号：S718[农业科学—林学]