太行山南段火烧迹地不同恢复期草本群落多样性研究  

Diversity of the Herb Communities at Different Recovery Stage in the Burned Areas of Southern Taihang Mountains,Shanxi

作　　者：林荣木 武帅楷 金山[2] 燕树杰 郝嘉鑫 张桂萍[2] LIN Rongmu;WU Shuaikai;JIN Shan;YAN Shujie;HAO Jiaxin;ZHANG Guiping(College of Life Sciences,Shanxi Normal University,Taiyuan 030031,China;Department of Life Science,Changzhi University,Changzhi 046011,China;College of Grassland Science,Shanxi Agricultural University,Taigu 030801,China)

机构地区：[1]山西师范大学生命科学学院,山西太原030031 [2]长治学院生命科学系,山西长治046011 [3]山西农业大学草业学院,山西太谷030801

出　　处：《山西大学学报（自然科学版）》2024年第3期637-646,共10页Journal of Shanxi University(Natural Science Edition)

基　　金：山西省1331重点学科建设项目(1331KSC);山西省重点学科建设项目(FSKSC)

摘　　要：以太行山南段火烧迹地不同恢复期草本植物群落为研究对象,通过“空间代替时间法”和样方法对火烧迹地草本植物群落进行调查,分析火烧迹地草本植物群落的物种多样性、分类和排序。结果表明:(1)随着火烧迹地植被恢复期增加,草本植物群落的科、属、种数上均显示出先升高后降低的趋势,科的数量从样点S1—S5依次为27、25、27、31和18科,属的数量从S1—S5依次为70、65、67、79和38属,种的数量从S1—S5依次为79、89、85、99和50种。(2)就科、属、种组成结构来看,菊科、豆科、禾本科为优势科,蒿属、堇菜属、委陵菜属为优势属,大披针薹草、京芒草和小红菊为主要优势种。(3)随着群落演替的进行,物种丰富度、Shannon-Wiener指数和Simpson指数均呈现先上升后下降的趋势,在恢复9年期出现峰值,分别为(10.70±3.38)、(2.09±0.39)和(0.84±0.07);Pielou均匀度指数在恢复8年后出现峰值(0.91±0.05)。(4)双向指示种分析(Two-way Indicators Species Analysis,TWINSPAN)数量分类将研究地的草本植物群落分为8个群丛,即京芒草+大披针薹草+小红菊群丛、京芒草+大披针薹草+白莲蒿群丛、大披针薹草+白莲蒿+小红菊群丛、小红菊+大披针薹草+截叶铁扫帚群丛、大披针薹草+小红菊+草木樨群丛、大披针薹草+野青茅+小红菊群丛、大披针薹草+小红菊+牻牛儿苗群丛及大披针薹草+斜茎黄耆群丛。(5)除趋势对应分析(Detrended Correspondence Analysis,DCA)排序表明,坡向和坡位是影响太行山南段火烧迹地草本植物群落分布的主要环境因子。The herbaceous plant communities in different recovery periods of burned areas in the southern section of Taihang Moun-tain,Shanxi,were studied by species diversity,classification and ordination.The results showed that:(1)With the increase of vegeta-tion recovery period in the burned areas,the numbers of families from sample 1 to sample 5 were 27,25,27,31 and 18,the numbers of genera from sample 1 to sample 5 were 70,65,67,79 and 38,and the numbers of species from sample 1 to sample 5 were 79,89,85,99 and 50.(2)In terms of the composition structure of families,genera and species,Asteraceae,Fabaceae,and Poaceae are the dominant families,Artemisia,Viola,and Potentilla are the dominant genus,and Carex lanceolata,Achnatherum pekinense and Chrysanthemum Chaneti are the main dominant species.(3)With the succession of communities,species richness,Shannon-Wiener index and Simpson index showed a trend of increasing firstly and then of decreasing.Their peaks were(10.70±3.38),(2.09±0.39),(0.84±0.07)in 9 years recovery,respectively.The Pielou uniformity index peaked(0.91±0.05)after 8 years recovery.(4)The herbaceous plant communities were divided into 4 grades and 8 groups by Two-way Indications Species Analysis(TWINSPAN),including Ass.Achnatherum pekinense+Carex lanceolata+Chrysanthemum chanetiassociation,Ass.Achnatherum pekinense+Carex lanceolata+Artemisia stechmannianaassociation,Ass.Carex lanceolata+Artemisia stechmanniana+Chrysanthemum chanetiassociation,Ass.Chrysanthemum chaneti+Carex lanceolata+Lespedeza cuneataassociation,Ass.Carex lanceolata+Chrysanthemum chaneti+Melilotus officinalisassociation,Ass.Carex lanceolata+Deyeuxia pyramidalis+Chrysanthemum chaneti association,Ass.Carex lanceolata+Chrysanthemum chaneti+Erodium stephanianumassociation and Ass.Carex lanceolata+Astragalus laxmanniassociation.(5)The results of Detrended Correspondence Analysis(DCA)ordination showed that the slope aspect and slope position were the main environmental factors affecting the distribution of herbaceous plant communities in the

关 键 词：火烧迹地 物种组成 物种多样性 数量分类 DCA排序 

分 类 号：S718.5[农业科学—林学] S762.8