五叶地锦叶功能性状坡向异质性研究及其气候驱动因子  

Study on the Slope Heterogeneity of Leaf Functional Traits of Parthenocissus quinquefolia(L.)Planch and Its Climatic Driving Factors

作　　者：刘彦林 曹鹤 杨新兵[3] 宋立恩 张志田 王楠 王佳欢 LIU Yanlin;CAO He;YANG Xinbing;SONG Lien;ZHANG Zhitian;WANG Nan;WANG Jiahuan(Land and Resources Exploration Center of Hebe Bureau of Geology and Mineral Resources Exploration(Hebei Mine and Geological Disaster Emergency Rescue Center),Shijiazhuang 050000,China;Hebei Geology and Mineral Resources Construction Engineering Group Co.,Ltd.,Shijiazhuang 050000,China;College of Forestry,Hebei Agricultural University,Baoding 071000,China)

机构地区：[1]河北省地质矿产勘查开发局国土资源勘查中心(河北省矿山和地质灾害应急救援中心),河北石家庄050000 [2]河北地矿建设工程集团有限责任公司,河北石家庄050000 [3]河北农业大学林学院,河北保定071000

出　　处：《山西农业科学》2023年第7期802-809,共8页Journal of Shanxi Agricultural Sciences

基　　金：河北省重点研发计划项目(20374208D)。

摘　　要：在矿山边坡植被恢复过程中,坡向对植物复绿效果具有较大的影响。以五叶地锦为研究对象,在高陡岩壁坡脚处设置朝正东、正南、正西、正北4个方向的种植槽,并在种植槽中栽植五叶地锦,通过方差分析和主成分-隶属函数评价法研究五叶地锦叶功能性状的坡向异质性和适宜性,采用偏相关分析揭示气候因子对叶功能性状变化的影响,以了解五叶地锦对坡向气候变化的适应性。结果表明,叶结构特征中,叶干物质含量(LDMC)大小依次为东坡>西坡>北坡>南坡;叶片含水量(LWC)、比叶面积(SLA)大小依次为北坡>东坡>西坡>南坡;叶厚(LT)大小依次为南坡>东坡=西坡>北坡;叶组织密度(LTD)大小依次为南坡>西坡>东坡>北坡。叶光合特征中,叶片净光合速率(Pn)、气孔导度(Gs)、蒸腾速率(Tr)和水分利用效率(WUE)大小均表现为东坡>西坡>北坡>南坡,胞间CO_(2)浓度(Ci)与之相反。叶荧光特征中,初始荧光(Fo)南坡和西坡较大,东坡和北坡较小,最大荧光(Fm)、PSⅡ量子效率(Fv/Fo)和PSⅡ最大光化学效率(Fv/Fm)大小均表现为北坡>东坡>南坡>西坡。五叶地锦坡向适宜性大小综合排序为:东坡(2.67)>北坡(1.66)>西坡(0.07)>南坡(-1.60)。气候因子中对五叶地锦叶功能性状影响程度不同,叶结构特征受环境湿度影响较大,光合辐射次之;叶光合特征受环境温度影响较大,光合辐射次之;叶荧光特征受环境湿度影响较大,环境温度、蒸发次之。综上,在高陡岩壁环境条件下,五叶地锦在东坡生长最佳,在高温、强蒸发和强光合辐射环境下,五叶地锦叶功能性状表现出抗逆性。In the process of vegetation restoration of mine slope,the slope direction has a great influence on the effect of plant regreening.In this paper,Parthenocissus quinquefolia(L.)Planch brocade was taken as the research object,planting troughs were arranged at the foot of the high and steep bedrock slope facing east,south,west,and north.Parthenocissus quinquefolia(L.)Planch was planted in the planting troughs.The slope heterogeneity and suitability of functional traits of Parthenocissus quinquefolia(L.)Planch leaves were studied by analysis of variance and principal component-membership function evaluation.Partial correlation analysis was used to reveal the effect of climatic factors on the changes of leaf functional traits to understand the adaptability of Parthenocissus quinquefolia(L.)Planch to slope climate change.The results showed that in the characteristics of leaf structure,the order of the leaf dry matter content(LDMC)was as east slope>west slope>north slope>south slope.Leaf water content(LWC)and specific leaf area(SLA)are north slope>east slope>west slope>south slope,leaf thickness(LT)is south slope>east slope=west slope>north slope,and leaf tissue density(LTD)is south slope>west slope>east slope>north slope.In the leaf photosynthetic characteristics,the order of net photosynthetic rate(Pn),stomatal conductivity(Gs),transpiration rate(Tr),and water utilization efficiency(WUE)was as east slope>west slope>north slope>south slope,intercellular CO_(2) concentration(Ci)was opposite to the order.In the leaf fluorescence characteristics,the initial fluorescence(Fo)on the south slope and est slope were large,and the value on the est slope and the north slope were small.Maximum fluorescence(Fm),PSⅡquantum efficiency(Fv/Fo),and PSⅡmaximum photochemical efficiency(Fv/Fm)were in the order of north slope>east slope>south slope>west slope.The comprehensive order of slope adaptability of Parthenocissus quinquefolia(L.)Planch was as follows:east slope(2.67)>north slope(1.66)>west slope(0.07)>south slope(-1.60).The eff

关 键 词：五叶地锦 坡向 叶功能性状 隶属函数评价法 高陡岩壁 气候因子 

分 类 号：S731.6[农业科学—林学]