Functional structure of soil nematode community in Changgangshan Nature Reserve of Guangzhou, southern China
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摘要: 为进一步认识植被类型通过影响土壤生物进而影响整个土壤生态系统过程,对城市森林不同林分类型下的土壤线虫群落功能结构特征进行了研究。2010年1—12月,对广州市长岗山自然保护区4种典型林分(木荷、青皮、尾叶桉和粉单竹)的凋落物层、0~10 cm和10~20 cm土层的土壤线虫群落进行逐月调查,采用Baermann漏斗法分离线虫;土壤含水量采用烘干法进行测定;应用营养类群组成、c-p类群结构及营养结构特征指数等特征值分析城市林地土壤线虫群落功能结构及其特征。4种林分样地共分离得到32 879头土壤线虫,隶属于2纲8目39科93属,土壤线虫的平均个体密度为669头/100 g干土;土壤线虫空间分布的表聚性明显。不同林分类型的土壤线虫群落营养类群组成及分布特征存在一定差异,植物寄生性线虫和食真菌性线虫是调查区域的主要营养类群。c-p类群组成结构特征结果表明:土壤线虫cp2类群为优势类群,所有类群的生活策略以r-对策为主;cp1和cp2类群在木荷林与青皮林中个体密度较高,木荷林与青皮林的线虫食物资源在4种林分中相对丰富;竹林中cp1和cp2类群的个体密度最低,但cp3~cp5类群个体密度最高。竹林PPI值最高,其受扰动的影响程度大于其他林型;通过竹林土壤线虫的MI值、PPI/MI值及cp3~cp5类群个体密度值的分析结果表明,竹林的稳定性相比其他林型高。4种林型的F/B及NCR值无显著差异,土壤有机质分解均主要依靠真菌分解途径。Abstract: To understand the functional structure of soil nematode community in urban forests of southern China, soil nematodes in four representative forest types (Schima superba,Eucalyptus urophylla,Bambusa chungii and Vatica astrotricha) located in Changgangshan Nature Reserve of Guangzhou, southern China were sampled monthly from January to December 2010. Soil nematode communities in litterfall, 0-10 cm and 10-20 cm layers of the upper soil were investigated. The soil nematodes were collected using the Baermann’s methods.The soil water content was tested by oven drying method. The trophic composition, c-p group structure and functional structure index, as well as the characteristic values between trophic groups, were analyzed to understand the effect of different types of urban forest on the functional diversity of soil nematodes. The results showed that a total of 32 879 nematodes, which belonged to 2 classes, 8 orders, 39 families and 93 genera, were collected during the investigations. The average individual density was 669 nematodes per 100 g dry soil. The results demonstrated that soil nematodes obviously appeared to aggregate in the upper soil layers. The composition and spatial distribution of tropic groups varied among different forest types. Herbivorous and fungivorous nematodes were the dominant communities in the area.An analysis of the constitution of the c-p groups showed that all cp2 groups were predominant ones in all forest types,and all c-p groups were mainly r-strategists.S. superba and V. astrotricha were the more common food sources for nematodes than others, and they had the higher nematode density of cp1 and cp2 compared with elsewhere. B. chungii had the lowest nematode density of cp1 and cp2,possibly because limited food availability limits the reproduction of cp1 and cp2 nematodes. However, soil nematode density of cp3-cp5 was the highest in B. chungii than other forest types. The analysis of the plant parasite index (PPI) indicated that the B. chungii community was easier for nematodes to populate when compared with the other three forest types, whereas the data from the maturity index (MI), PPI/MI and cp3-- cp5 demonstrated that nematode stability in the B. chungii was highest among four forest types.The fungal to bacterial feeder ratio (F/B) and nematode channel ratio (NCR) showed that fungal decomposition was the major decomposition pathway in the soil organic substance decomposition system.
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Keywords:
- soil nematode /
- trophic group /
- function structure /
- urban forest
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[1] YEATES G W,WARDLE D A,WATSON R. Responses of soil nematode populations,community structure,diversity and temporal variability to agricultural intensification over a seven-year period[J]. Soil Biology and Biochemistry,1999,31: 1721- 1733.
[1] XUE H Y,HU F,LUO D Q. Effect of plant community on soil nematode community in alpine meadows in north Tibet[J]. Acta Pedologica Sinica,2013,50(3):507- 516.
[2] ZHANG W D,GU X,L Y,et al. Soil nematode community response to coastal protection forest ecosystem restoration in Dalian [J].Chinese Journal of Soil Science,2013, 44(3): 647- 652.
[2] FU S L,ZOU X M,COLEMAN D.Highlights and perspectives of soil biology and ecology research in China [J]. Soil Biology and Biochemistry,2009,41(5): 868- 876.
[3] WU D H,ZHANG B,CHEN P. Structural characteristics of soil nematodes community under different land uses in Changchun City [J]. Chinese Journal of Applied Ecology,2006,17(3): 450- 456.
[3] YEATES G W,BONGERS T,GOEDE R G M,et al. Feeding habits in soil nematode families and genera: an outline for soil ecologists [J]. Journal of Nematology,1993,25: 315- 331.
[4] BONGERS T,BONGERS M. Functional diversity of nematodes [J]. Applied Soil Ecology,1998,10(3): 239- 251.
[4] ZHU C,SU Z Y,XIONG Y M. Guangzhou greenbelt soil nematode types and diversity characteristics [J]. Ecological Science,2012,31(2):214- 219.
[5] TONG F C,XIAO Y H. Community structure of soil nematodes in Changgangshan Natural Reserve of Guangzhou[J]. Scientia Silvea Sinicae,2014,50(2):111- 120.
[5] FERRIS H,BONGERS T,DE GOEDE R G M. A framework for soil food web diagnostics:extension of the nematode faunal analysis concept [J]. Applied Soil Ecology,2001,18(1):13- 29.
[6] YEATES G W.Nematodes as soil indicators: functional and biodiversity as pacts [J]. Biol Fert Soils,2003,37(4): 199- 210.
[6] WU Y B, FENG Z J. Rare and endangered plants and national key protected plants for ex situ conservation in South China Agricultural University Arboretum [J]. Journal of South China Agricultural University, 2006,27(3):118- 121.
[7] RAHMAN L,CHAN K Y,HEENAN D P. Impact of tillage,stubble management and crop rotation on nematode populations in a long-term field experiment[J]. Soil Tillage Research,2007,95(1- 2): 110- 119.
[7] YIN W Y. Pictorial keys to soil animal of China[M]. Beijing: Science Press, 1998.
[8] LIN Y H,ZHANG F D,ZHANG J Q,et al. Preliminary investigation on temporal and spatial variation of structure of soil fauna community in different natural vegetations of Dinghushan [J]. Acta Ecologica Sinica,2005,25(10):2616- 2622.
[8] 薛会英,胡锋,罗大庆. 藏北高寒草甸植物群落对土壤线虫群落的影响[J].土壤学报,2013,50(3):507- 516. [9] YEATES G W,BONGERS T. Nematode diversity in agroecosystems [J]. Ecosystems and Environment,1999,74(1- 3): 113- 135.
[9] TONG F C, XIE Z S, CHEN B F,et al. Influence of vegetation reclamation type on characteristics of soil nematode community in Baiyun Mountain in autumn and winter [J]. Journal of Northeast Forestry University,2010,38(3):100- 118.
[10] DE DEYN G B,RAAIJMAKERS C E,VAN RUIJVEN J,et al. Plant species identity and diversity effects on different trophic levels of nematodes in the soil food web[J]. Oikos,2004,106(3): 576- 586.
[10] XUE H Y,HU F,LUO D Q. Effects of alpine meadow plant communities on soil nematode functional structure in northern Tibet,China[J]. Acta Ecologica Sinica,2013,33(5): 1482- 1494.
[11] WANG J,LIAO Q S,DING W M,et al. Invertebrate biodiversity in litter layers of natural forest and Eucalyptus plantation in eastern Guangdong,China[J]. Chinese Journal of Applied Ecology,2008,19(1): 25- 31.
[11] YEATES G W. Abundance,diversity,and resilience of nematode assemblage in forest soils [J]. Canadian Journal of Forest Research,2007,37: 216- 225.
[12] LIU Y J. Structure characteristics of soil nematode community in greenhouse[M]. Harbin: Heilongjiang University Press,2010: 66- 67.
[12] TONG F C,XIAO Y H,WANG Q L. Soil nematode community structure on the northern slope of Changbai Mountain,northeast China [J]. Journal of Forestry Research,2010,21(1): 93- 98.
[13] 张伟东,谷旭,吕莹,等. 大连滨海防护林不同植被类型对土壤线虫群落的影响[J]. 土壤通报,2013,44(3): 647- 652. [14] BONGERS T,FERRIS H. Nematode community structure as a bioindicator in environmental monitoring [J]. Trends in Ecology Evolution,1999,14(6): 224- 228.
[15] ALVEY A A. Promoting and preserving biodiversity in the urban forest [J]. Urban Forestry Urban Greening,2006,5: 195- 201.
[16] 吴东辉,张柏,陈鹏. 长春市不同土地利用生境的土壤线虫群落结构特征[J]. 应用生态学报,2006,17(3): 450- 456. [17] 朱纯,苏志尧,熊咏梅. 广州绿地土壤线虫种类和多样性特征[J]. 生态科学,2012,31(2): 214- 219. [18] 佟富春,肖以华. 广州长岗山森林土壤线虫的群落结构特征[J]. 林业科学,2014,50(2):111- 120. [19] 吴永彬,冯志坚. 华南农业大学树木园稀有濒危植物和国家重点保护植物的迁地保护[J]. 华南农业大学学报,2006,27(3):118- 121. [20] 尹文英. 中国土壤动物检索图鉴[M]. 北京: 科学出版社,1998. [21] 林英华,张夫道,张俊清,等. 鼎湖山不同自然植被土壤动物群落结构时空变化[J]. 生态学报,2005,25(10):2616- 2622. [22] 佟富春,谢正生,陈步峰,等. 广州白云山不同林分修复模式秋冬季土壤线虫群落结构特点[J]. 东北林业大学学报,2010,38(3):100- 118. [23] PANESAR T S,MARSHALL V G,BARCLAY H J. Abundance and diversity of soil nematodes in chronosequences of coastal Douglas-fir forests on Vancouver Island,British Columbia[J]. Pedobiogia,2001,45: 193- 212.
[24] POLIS G A,STRONG D R. Food web complexity and community dynamics [J]. American Naturalist,1996,147: 813- 846.
[25] YEATES G W. Variation in soil nematode diversity under pasture with soil and year [J]. Soil Biology Biochemistry,1984,16: 95- 102.
[26] 薛会英,胡锋,罗大庆. 藏北高寒草甸植物群落对土壤线虫群落功能结构的影响[J].生态学报,2013,33(5):1482- 1494. [27] GRFFTHS B S,RITZ K,WHEATLEY R E. Nematodes as indicators of enhanced microbiological activity in a Scottish organic farming[J].Soil Use Management,1994,10: 20- 24.
[28] 王军,廖庆生,丁伟民,等. 粤东地区速生桉树林与天然林枯枝落叶层无脊椎动物多样性比较[J].应用生态学报,2008,19(1):25- 31. [29] BONGERS T. The maturity index: an ecological measure of environmental disturbance based on nematode species composition [J]. Oecologia,1990,83(1):14- 19.
[30] 刘艳军. 温室土壤线虫群落结构特征[M]. 哈尔滨:黑龙江大学出版社,2010: 66- 67. -
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