Evaluating the Changes in Structure and Biomass of Three Common Forest-floor Mosses in Cutovers and Primary Spruce Forest in the Eastern Tibetan Plateau

( views:, downloads: )
Author:
BAO Weikai(Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China)
LEI Bo(Chongqing Academy of Environmental Science, Chongqing, China)
Journal Title:
CHINESE JOURNAL OF APPLIED & ENVIRONMENTAL BIOLOGY
Issue:
Volume 15, Issue 01, 2009
DOI:
10.3724/SP.J.1145.2009.00008
Key Word:
bryophyte;population;coverage;biomass;forest felling;clear-cut habitat;primary spruce forest;environmentalalteration;Tibetan Plateau

Abstract: Forest felling is known to seriously affect forest-floor bryophyte population development, but few studies have done to investigate the temporal change of bryophyte population along the cutover restoration process. Selecting three preponderant forest-floor mosses distributing extensively in primary coniferous forests in the eastern Tibetan Plateau, Actinothuidium hookeri, Hylocomium splendens and Thuidium cymbifolium, we investigated their frequency, cover and biomass, as well as vascular plant cover (including herbs and shrubs) and litter, in four cutovers with similar background but with different felling time and a nearby primary spruce forest in Ramtang, Sichuan and compared their differences in population structure and biomass. We aimed to assess their changes in structure and biomass of the three moss populations following forest felling. In particular, we tried to test two hypotheses: 1) Forest-floor moss populations would decline significantly after forest felling due to environmental alteration; and 2) they would be gradually restored during the early natural restoration process of cutover vegetation. We found: 1) the three mosses all showed significant differences in cover and biomass between the cutovers and the primary spruce forest, confirming the first hypothesis; however, 2) all the three populations did not show apparent differences in population structure and biomass along the cutover restoration chronosequence, disagreeing with the second hypothesis. The large variability in cover and biomass in the cutovers, on a microhabitat scale, indicated that these three populations were more dynamic in the cutovers than in the primary spruce forest. Spearman rank correlation analysis revealed that both tree and herb covers were crucial factors impacting forest floor bryophyte population biomass. Our results suggested that the features of the three moss populations in the cutovers were indicative of their ecological adaptations and reproductive strategies and of the environmental alteration created by clear-felling, and it was difficult for recovery and restoration of two climax populations, A. hookeri and H. splendens, if only relying on natural restoration in the alpine cutovers in the eastern Tibetan Plateau. Fig 6, Tab 4, Ref44

  • [1]Huang LL(黄礼隆).Preliminary studies on water conservation functions of subalpine dark coniferous forest in western Sichuan.In:Zhou XF (周晓峰)ed.Long-term Research on China's Forest Ecosystems(中国森林生态系统长期研究).Harbin,China(哈尔滨):Northeastern Forestry University Press(东北林业大学出版社),1994.400-412
  • [2]Cap T,Gap C,Fu X.Water holding capability of bryophytes of forest ecosystems and their roles in water cycling in Mt.Changbai.For Ecosyst Res,1995,6:73~79
  • [3]Chapin FS,Oeehel WC,Van Cleve K,Lawrence W.The role of mosses in the phosphorus cycling of an Alaskan black spruce forest.Oecologia,1987,74:310~315
  • [4]Coxson DS.Nutrient release from epiphytie bryophytes in tropical montane rain forest (Guadeloupe).Can J Bot,1991,69:2122~2129
  • [5]Liu XL(刘兴良),Su YM(宿以明),Xiang CH(向成华),Zou BC(邹伯才),Xiao L(肖林).Concentration,storage and allocation ofnutrient elements in Picea balfouriana plantation ofwestern Sichuan Province.Sci Silv Sin(林业科学),2001,37(4):10~18
  • [6]Zamfir M.Effects of bryophytes and lichens on seedling emergence of alvar plants:Evidence from green-house experiments.Oikos,2000,88:603~611
  • [7]Vellak K,Paul J.Diversity of bryophyte vegetation in some forest types in Estonia:A comparison of old unmanaged and managed forests.Biodiv Conserv,1999,8:1595~1620
  • [8]Jalonen J,Vanhn-Majamaa I.Immediate effects of four different felling methods on mature boreal spruce forest understorey vegetation in south Finland.For Ecol Manage,2001,146:25~34
  • [9]Ross-Davis AL,Frego KA.Comparison of plantations and naturally regenerated clearcuts in the Acadian Forest:forest floor bryophyte community and habitat features.Can J Bot,2002,80:21~33
  • [10]Okland RH,Okland T.Population biology of clonal moss Hylocomium splendens in Norwegian boreal spruce forests II.Effects of density.J Ecol,1996,84:63~69
  • [11]Miller CI,Ledig FT,RiggsL A,Conservation of diversity in forest ecosystems.For Ecol Manage,1990,35:1~4
  • [12]Burton PJ,Balisky AC,Coward LP,Cumming SG,Kneeshaw DD.The value of managing for biodiversity.For Chron,1992,68:225~237
  • [13]Newmaster SG,Bell FW.The effects of silvicultural disturbances on cryptogam diversity in the boreal-mixed wood forest.Can For Res,2002,32:38~51
  • [14]Richardson SD.Forests and forestry in China:Changing patterns of resource development.Washington D.C.,U.S.A.:Island Press,1990
  • [15]Liang HC(梁罕超).A review on studies on the regeneration of cuttingblanks in western Sichuan alpine forests.In:Li CB(李承彪)ed.Ecological Study of the Sichuan Forest(四川森林生态研究).Chengdu,China(成都):Sichuan Publication House of Science and Technology(四川科技出版社),1990.513~536
  • [16]Hou GW(侯广维).Studies on nutrient variation of the cutting-blanks in western Sichuan alpine region.In:Li CB(李承彪)ed.Ecological Study of Sichuan Forest(四川森林生态研究).Chengdu,China(成都):Sichuan Publication House of Science and Technology(四川科技出版社),1990.143~152
  • [17]Deng MK.Environment after clearcutting for fir and spruce forests and its effect on forest regeneration in the Hengduan Mountainous region.J Nat Res(自然资源学报),1992,3:60~66
  • [18]Li WH.Forests of the Himalayan-Hengduan Mountains of China and Strategies for Their Sustainable Development.Katmandu,Nepal:ICIMOD Publisher,1993
  • [19]Yang YP(杨玉坡),Zhou DZ(周德彰).Change in ecological factors and management techniques on alpine forest cutting blanks in western Sichuan.In:Zhou XF(周晓峰)ed.Long-term Researches on China's Forest Ecosystems(中国森林生态系统长期研究).Harbin,China(哈尔滨):Northeastern Forestry University Press(东北林业大学出版社),1994.772~780
  • [20]Wang JX(王金锡),Xu JD(许金铎),Hou GW(侯广维),Liu JB(刘建邦),Pan JT(潘家泰),Shi LX(史立新),Liao GY(廖光瑶).Ecology and Regeneration of Cut Blank in Alpine and Plateau Region of the Upper Reach of Yangtze River(长江上游高山高原林区迹地生态与营林更新技术).Beijing,China(北京):Chinese Publication House of Forestry(中国林业出版社),1995
  • [21]Liu ZG(刘照光),Chen QH(陈庆恒).Degradation of forest ecosystems and combating measures in the subalpine region of the southwestern China.In:Chen LZ(陈灵芝),Chen WL(陈伟烈)eds.Degradation Ecosystem Research in China(中国退化生态系统研究).Beijing,China(北京):Chinese Publication House of Science and Technology(中国科学技术出版社),1995.165~185
  • [22]Liu ZG(刘照光),Zhang YC(张雨成),Wu N(吴宁).Forest ecosystems and sustainable development in the upper reaches of Yangtze River.In:Niu DS(牛德水)ed.Biological Researches and Sustainable Development of Agriculture(生物多样性研究与农业可持续发展).Beijing,China(北京):Science Press(科学出版社),1997.227~232
  • [23]Bao WK(包维楷),Zhang YL(张意锂),Wang Q(王乾),Bai WQ(摆万奇),Zheng D(郑度).Rehabilitation on subalpine coniferous forest on the upper reaches ofthe Dadu River ofeastern Tibetan Plateau.J Mount Sci(山地学报),2002,20(2):194~198
  • [24]Bai WQ(摆万奇),Zhang YL(张意锂),Bao WK(包维楷).Landscape patterns and dynamics in the upper reaches of the Dadu River.J Nat Res(自然资源学报),2003,18(1):75~80
  • [25]Bao WK.Structural features of Polytrichum yormosum Hedw.population along a habitat sequence of cutover restoration in the eastern Tibetan Plateau.Ecol Res,2005,20:701~70725 Bao WK.Structural features of Polytriehura formosum Hedw.population along a habitat sequence of cutover restoration in the eastern Tibetan Plateau.Eeol Res,2005,20:701~707
  • [25]Bao WK.Structural features of Polytrichum yormosum Hedw.population along a habitat sequence of cutover restoration in the eastern Tibetan Plateau.Ecol Res,2005,20:701~70725 Bao WK.Structural features of Polytriehura formosum Hedw.population along a habitat sequence of cutover restoration in the eastern Tibetan Plateau.Eeol Res,2005,20:701~707
  • [26]Collaborative Group for Sichuan Vegetation (四川植被协作组).Vegetation in Sichuan(四川植被).Chengdu,China(成都):Sichuan People's Publishing House(四川人民出版社),1980
  • [27]Editorial Board of Forests in Sichuan(四川森林编写组).Forests in Sichuan.Beijing,China(北京):Chinese Publication House of Forestry(中国林业出版社),1992
  • [28]Wu PC(吴鹏程).Bryoflora of Henduan Mts.(Southwest China).Beijing,China(北京):Science Press(科学出版社),2000.558~576,662~668
  • [29]Persson H.Viereck LA.Collections and discussions of some bryophytes from Alaska.Lindbergia,1983,9:5~20
  • [30]Bao WK(包维楷),Wang CM(王春明),Wu N(吴宁).Change of water holding and conservation capacity of eight species of bryophytes under the subalpine coniferous forests in Eastern Tibetan Plateau.J Nat Res(自然资源学报),2004,19(2):1990~194
  • [31]Lei B(雷波),Bao WK(包维楷),Jia Y(贾渝).Ground bryophyte composition and synusia structures under young Pinus tabuliformis forests in the upper Minjiang River.Biodiver Sci(生物多样性),2004,12(4):410~418
  • [32]During H J,Lloret F.Permanent grid studies in bryophyte communities 1.Pattern and dynamics of individual species.J Hatt Bot Lab,1996,79:1~41
  • [33]Okland RH.Changes in the occurrence and abundance of plant species in a Norwegian boreal coniferous forest,1988~1993.Nordic J Bot,1995,15:415~438
  • [34]Duliere JF,Bruyu RD,Malaisse F.Changes in moss layer after liming in a Norway spruce[Picea abies (L.) Karst.] stand of Eastern Belgium.For Ecol Manage,2000,136:97~105
  • [35]Bergamini A,Pauli D,Peintinger M,Schmid B.Relationships between productivity,number of shoots and number of species in bryophytes and vascular plants,J Ecol,2001,89:920~929
  • [36]Okland RH.Population biology of clonal moss Hylocomium splendens in Norwegian boreal spruce forests V.Vertical dynamics of individual shoot segments.Oikos,2000,88:449~469
  • [37]Okland T,Rydgren K,Okland RH,Storaunet KO,Rolstad J.Variation in environmental conditions,understorey species number,abundance and composition among natural and managed Picea abies forest stands.For Ecol Manage,2003,177:17~37
  • [38]Herben T.The role of reproduction for persistence of bryophyte populations in transient and stable habitats.J Hatt Bot Lab,1994,76:115~126
  • [39]Busby JR,Bliss LC & Hamilton CD.Microclimate control of growth rates and habitats of the boreal forest mosses,Tomenthypnum nitens and Hylocomium splendens.Ecol Monogr,1978,48 (2):95~110
  • [40]Soderstrom L.Scope and significance of studies on reproductive biology of bryophytes.J Hatt Bot Lab,1994,76:97~103
  • [41]Guidot A,Gryta H,Gourbiere F,Debaud JC,Armeisse RL.Forest habitat characteristics affect balance sexual reproduction and clonal propagation of the ectomycorrhizal mushroom Hebeloma cylindrosporum.Oikos,2002,99:25~36
  • [42]Eriksson O.Dynamics of genets in clonal plants.Trends Ecol Evol,1993,8:313~316
  • [43]Kudol H,Shibaike H Takasu H,Whigham DF,Kawano S.Genet structure and determinants of clonal structure in a temperate deciduous woodland herb,Urularia perfoliata.J Ecol,1999,87:244~257
  • [44]Mandujano MDC,Montana C,Mendez I,Golubov J.The relative contribution of sexual reproduction and clonal propagation in Opuntia rastrera from two habitats in the Chihuahua desert.J Ecol,1998,86:911~921
WanfangData CO.,Ltd All Rights Reserved
About WanfangData | Contact US
Healthcare Department, Fuxing Road NO.15, Haidian District Beijing, 100038 P.R.China
Tel:+86-010-58882616 Fax:+86-010-58882615 Email:yiyao@wanfangdata.com.cn