全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
湖泊科学  2012 

太湖流域上游西苕溪源头溪流中毛竹、石栎和山胡椒落叶分解比较

DOI: 10.18307/2012.0307

Keywords: 落叶分解,大型底栖动物,毛竹,石栎,山胡椒,西苕溪,太湖流域

Full-Text   Cite this paper   Add to My Lib

Abstract:

比较了毛竹、石栎和山胡椒叶片的理化属性,采用粗网叶袋法研究了三种落叶在太湖流域上游西苕溪中的分解过程,探讨了毛竹叶成为溪流优势外来能源后对溪流生态过程和底栖动物群落结构的影响.三种落叶的氮、磷含量及叶片厚度都存在显著差异,毛竹叶的氮含量(30.23g/kg)远高于石栎(20.98g/kg)和山胡椒(9.69g/kg),其中毛竹叶的分解速率最快(k=0.00592d-1),山胡椒(0.00297d-1)和石栎叶(0.00212d-1)较慢.三种落叶叶袋间的大型底栖无脊椎动物包括各取食功能团的多度和生物量无显著差异,而4次采样间的差异很显著.大型底栖动物的取食功能团中,撕食者的数量比例最高(40.3%),生物量比例为41.6%,是落叶分解的重要功能类群.撕食者中,利用阔叶筑巢的鳞石蛾Lepidostoma数量最多,占全部底栖动物的14%,是该溪流中主要的撕食者类群.因此,由于毛竹叶具有氮、磷含量较高、叶形较窄,以及两年进行一次换叶的特点,当毛竹叶替代其他阔叶秋季落叶的树种成为源头溪流优势外来能源后,可能会改变源头溪流中的氮磷含量、溪流外来能源的量和滞留时间以及底栖动物群落结构.

References

[1]  Webster JR,Meyer JL. Stream organic matter budgets. Journal of the North American Benthological Society,1997,16(1):3-161.
[2]  Hill BH,Webster JR. Aquatic macrophyte contribution to the New River organic matter budget. In:Fontaine T,Bartell S eds. Dynamics of lotic ecosystems. Michigan:Ann Arbor Science,1983:273-282.
[3]  Gessner MO,Chauvet E. A case for using litter breakdown to assess functional stream integrity. Ecological Applications, 2002,12(2):498-510.
[4]  Webster JR,Benfield EF. Vascular plant breakdown in fresh-water ecosystems. Annual Review of Ecology and Systematics, 1986,17:567-594.
[5]  Gessner MO,Chauvet E,Dobson M. A perspective on leaf litter breakdown in streams. Oikos,1999,85(2):377-384.
[6]  Petersen RC,Cummins KW. Leaf processing in a woodland stream. Freshwater Biology,1974,4:343-368.
[7]  Kominoski JS,Pringle CM,Ball BA et al. Nonadditive effects of leaf-litter species diversity on breakdown dynamics in a detritus-based stream. Ecology,2007,88(5):1167-1176.
[8]  Scherer-Lorenzen M,Bonilla JL,Potvin C. Tree species richness affects litter production and decomposition rates in a tropical biodiversity experiment. Oikos,2007,116(12):2108-2124.
[9]  李文朝,陈开宁,吴庆龙等. 东太湖水生植物生物质腐烂分解研究. 湖泊科学,2001,13(4):331-336.
[10]  中国土壤学会农业化学专业委员会. 土壤农业化学常规分析方法. 北京:科学出版社,1983.
[11]  Leroy CJ,Marks JC. Litter quality,stream characteristics and litter diversity influence decomposition rates and macroinvertebrates. Freshwater Biology,2006,51(4):605-617.
[12]  Pennings SC,Carefoot TH,Zimmer M et al. Feeding preferences of supralittoral isopods and amphipods. Canadian Journal of Zoology,2000,78:1918-1929.
[13]  Arsuffi TL,Suberkropp K. Leaf processing capabilities of aquatic hyphomycetes:interspecific differences and influence on shredder feeding preferences. Oikos,1984,42:144-154.
[14]  Vannote RL,Minshall GW,Cummins KW et al. The river continuum concept. Canadian Journal of Fisheries and Aquatic Sciences,1980,37:130-137.
[15]  Moore JC,Berlow EL,Coleman DC et al. Detritus,trophic dynamics and biodiversity. Ecology Letters,2004,7:584-600.
[16]  Hieber M,Gessner MO. Contribution of stream detrivores,fungi,and bacteria to leaf breakdown based on biomass estimates. Ecology,2002,83(4):1026-1038.
[17]  Duarte S,Pascoal C,Cassio F et al. Aquatic hyphomycete diversity and identity affect leaf litter decomposition in microcosms. Oecologia,2006,147(4):658-666.
[18]  Wardle DA,Bonner KI,Nicholson KS. Biodiversity and plant litter:experimental evidence which does not support the view that enhanced species richness improves ecosystem function. Oikos,1997,79:247-258.
[19]  Swan CM,Palmer MA. Leaf diversity alters litter breakdown in a piedmont stream. Journal of the North America Benthological Society,2004,23(1):15-28.
[20]  国家环境保护总局《水和废水监测分析方法》编委会. 水和废水监测分析方法. 北京:中国环境科学出版社,2002.
[21]  Olson JS. Energy storage and the balance of producers and decomposers in ecological systems. Ecology,1963,44(2):322-330.
[22]  Merritt RW,Cummins KW. An Introduction to the Aquatic Insects of North America:2nd. Dubuque:Kendall/Hunt Publishing Company,1984.
[23]  更多...
[24]  Irons JG,Oswood MW,Stout RJ et al. Latitudinal patterns in leaf litter breakdown:is temperature really important? Freshwater Biology,1994,32(2):401-411.
[25]  迟国梁,童晓立. 亚热带地区树叶凋落物在流水和静水环境中的淋溶规律. 生态科学,2010,29(1):50-55.
[26]  Robinson CT,Gessner MO. Nutrient addition accelerates leaf breakdown in an alpine springbrook. Oecologia,2000,122(2):258-263.
[27]  Royer TV,Minshall GW. Effects of nutrient enrichment and leaf quality on the breakdown of leaves in a hardwater stream. Freshwater Biology,2001,46(5):603-610.
[28]  Salusso MM. Biodegradation of subtropical forest woods from north-west Argentina by Pleurotus laciniatocrenatus. New Zealand Journal of Botany,2000,38:721-724.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133