常绿阔叶林藤本植物叶片N、P、K生态化学计量学特征
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摘要
【目的】研究广西大明山国家级自然保护区常绿阔叶林中30种藤本植物叶片N、P、K生态化学计量学特征,为丰富群落生态化学计量学提供基础数据。【方法】在大明山天坪站保存完好的常绿阔叶林中设置20m×20m标准样地80块,共3.2ha,在每个标准样地左下角设置5m×5m的小样方,对藤本植物多样性进行调查,根据重要值,采集30种藤本植物叶片,进行叶片N、P、K含量测定。【结果】叶片N、P、K变化范围分别为3.52～54.71、0.21～3.36、0.48～4.23g/kg。各个化学计量因子之间存在一定的线性关系,草质藤本叶片N∶K含量均大于木质藤本,P含量差异不显著。【结论】大明山常绿阔叶林中多数藤本植物是受N或P或N∶P的影响,约30%的种类受到N元素限制,而受到P元素限制的植物相对少;草质藤本叶片比木质藤本有更强的N、K元素存储能力。
【Objective】N, P, K ecological stoichiometry characteristics of 30 kinds of liana leaves in evergreen broad-leaf forest of Daming Mountain national nature reserve of Guangxi were studied to enrich basic data for community ecological stoichiometry. 【Method】Eighty blocks of 20 m × 20 m standard sample with the total area of 3.2 ha in Tianping station well-preserved evergreen broad-leaved forest were chosen, and then a 5 m × 5 m plot from every standard sample left bottom was set to observe the diversity of liana. Leaves of 30 lianas were collected for determining the content of N, P, K in the lab based on the important value. 【Result】 The results showed that contents of N, P and K in leaves were 3.52-54.71 g/kg, 0.21-3.36 g/kg and 0.48-4.23 g/kg, respectively. The stoichiometric factors had certain linear relationship. N∶K content of grass mass vine leaf was higher than that of woody vines, and P content in leaf was not significant differenth among different liana. 【Conclusion】Most lianas were influenced by N, P or N∶P with about 30% of the species by N element, however, few plants were affected by P element. Grass mass vine leaves gathered more N, K element than woody vines.
【Objective】N, P, K ecological stoichiometry characteristics of 30 kinds of liana leaves in evergreen broad-leaf forest of Daming Mountain national nature reserve of Guangxi were studied to enrich basic data for community ecological stoichiometry. 【Method】Eighty blocks of 20 m × 20 m standard sample with the total area of 3.2 ha in Tianping station well-preserved evergreen broad-leaved forest were chosen, and then a 5 m × 5 m plot from every standard sample left bottom was set to observe the diversity of liana. Leaves of 30 lianas were collected for determining the content of N, P, K in the lab based on the important value. 【Result】 The results showed that contents of N, P and K in leaves were 3.52-54.71 g/kg, 0.21-3.36 g/kg and 0.48-4.23 g/kg, respectively. The stoichiometric factors had certain linear relationship. N∶K content of grass mass vine leaf was higher than that of woody vines, and P content in leaf was not significant differenth among different liana. 【Conclusion】Most lianas were influenced by N, P or N∶P with about 30% of the species by N element, however, few plants were affected by P element. Grass mass vine leaves gathered more N, K element than woody vines.
引文
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朱宏光,李燕群,温远光,梁宏温,林建勇,农友.2011.特大冰冻灾害后大明山常绿阔叶林结构及物种多样性动态[J].生态学报,31(19):5571-5577.Zhu H G,Li Y Q,Wen Y G,Liang H W,Lin J Y,Nong Y.2011.The dynamics of the structure and plant species di-versity of evergreen broadleaved forests in Damingshan Na-tional Nature Reserve after a severe ice storm damage in2008,China[J].Acta Ecologica Sinica,31(19):5571-5577.
Güsewell S.2004.N∶P ratios in terrestrial plants:Variation andfunctional significance[J].New Phytologist,(164):243-266.
Han W X,Fang J Y,Guo D L,Zhang Y.2005.Leaf nitrogenand phosphorus stoichiometry across753terrestrial plantspecies in China[J].New Phytologist,168:377-385.
Reich P B,Oleksyn J.2004.Global patterns of plant leaf N andP in relation to temperature and latitude[J].Proceedings ofthe National Academy of Sciences of the United States ofAmerica,101(30):11001-11006.
任书杰,于贵瑞,陶波,王绍强.2007.中国东部南北样带654种植物叶片氮和磷的化学计量学特征研究[J].环境科学,28(12):2665-3573.Ren S J,Yu G R,Tao B,Wang S Q.2007.Leaf nitrogen andphosphorus stoichiometry across654terrestrial plant speciesin NSTEC[J].Chinese Journal of Environmental Science,28(12):2665-3573.
宋彦涛,周道玮,李强,王平,黄迎新.2012.松嫩草地80种草本植物叶片氮磷化学计量特征[J].植物生态学报,36(3):222-230.Song Y T,Zhou D W,Li Q,Wang P,Huang Y X.2012.Leafnitrogen and phosphorus stoichiometry in80herbaceousplant species of Songnen grassland in Northeast China[J].Chinese Journal of Plant Ecology,36(3):222-230.
温远光,元昌安,李信贤,和太平,赖家业,黄棉.1988.大明山中山植被恢复过程植物物种多样性的变化[J].植物生态学报,22(1):33-40.Wen Y G,Yuan C A,Li X X,He T P,Lai J Y,Huang M.1988.Development of species diversity in vegetation restoring pro-cess in mid-mountain region of Daming Mount,Guangx[iJ].Acta Phytoecologica Sinica,22(1):33-40.
叶铎,温远光,邓荣艳,梁红温,朱宏光,黄棉.2009.大明山常绿阔叶林演替序列种群生态位动态特征[J].生态学杂志,28(3):417-423.Ye D,Wen Y G,Deng R Y,Liang H W,Zhu H G,Huang M.2009.Dynamic changes of plant population niche in suc-cession series of evergreen broad-leaved forest in DamingMountain of Guangxi[J].Chinese Journal of Ecology,28(3):417-423.
张继光,傅声雷,温达志,张玲玲.2009.南亚热带人工林16种木本植物重要叶特征参数的相互关系[J].热带亚热带植物学报,17(4):395-400.Zhang J G,Fu S L,Wen D Z,Zhang L L.2009.Relationshipsof key leaf traits of16woody plant species in low subtropi-cal China[J].Journal of Tropical and Subtropical Botany,17(4):395-400.
张业,任一星,姚婧,李颖,杨松,侯继华.2012.华北地区油松林主要乔木物种叶片氮磷化学计量特征[J].安徽农业大学学报,39(2):247-251.Zhang Y,Ren Y X,Yao J,Li Y,Yang S,Hou J H.2012.Leaf nitrogen and phosphorous stoichiometry of trees in Pi-nus tabulaeformis Carr stands,North China[J].Journal ofAnhui Agricultural University,39(2):247-251.
朱宏光,李燕群,温远光,梁宏温,林建勇,农友.2011.特大冰冻灾害后大明山常绿阔叶林结构及物种多样性动态[J].生态学报,31(19):5571-5577.Zhu H G,Li Y Q,Wen Y G,Liang H W,Lin J Y,Nong Y.2011.The dynamics of the structure and plant species di-versity of evergreen broadleaved forests in Damingshan Na-tional Nature Reserve after a severe ice storm damage in2008,China[J].Acta Ecologica Sinica,31(19):5571-5577.
Güsewell S.2004.N∶P ratios in terrestrial plants:Variation andfunctional significance[J].New Phytologist,(164):243-266.
Han W X,Fang J Y,Guo D L,Zhang Y.2005.Leaf nitrogenand phosphorus stoichiometry across753terrestrial plantspecies in China[J].New Phytologist,168:377-385.
Reich P B,Oleksyn J.2004.Global patterns of plant leaf N andP in relation to temperature and latitude[J].Proceedings ofthe National Academy of Sciences of the United States ofAmerica,101(30):11001-11006.