不同生境柽柳灌丛土壤线虫群落特征

干旱区研究 ›› 2011, Vol. 28 ›› Issue (6): 1057-1063.

不同生境柽柳灌丛土壤线虫群落特征

王雪峰, 苏永中, 刘文杰, 杨荣, 杨晓

收稿日期:2010-11-21 修回日期:2010-12-27 出版日期:2011-11-15 发布日期:2012-01-16
作者简介:王雪峰（1979-）,男,辽宁朝阳人,在读博士,主要从事土壤生态学研究. E-mail: wangxuefeng11@163.com
基金资助:
国家自然科学基金项目(41071199)

Characteristics of Soil Nematode Communities under the Canopy of Tamarix spp. in Different Habitats

WANG Xue-Feng, SU Yong-Zhong, LIU Wen-Jie, YANG Rong, YANG Xiao

Laboratory of Drainage Basin Ecohydrology, Linze Inland River Basin Research Station, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China

Received:2010-11-21 Revised:2010-12-27 Published:2011-11-15 Online:2012-01-16

摘要/Abstract

摘要： 对干旱区固定沙丘（SD）、河岸湿地（RW）和盐碱湿地（SW）3种不同生境柽柳灌丛冠幅内（UC）和冠幅外（IS）土壤线虫群落进行了比较研究，共鉴定分离得到土壤线虫20属1 245条。研究表明：3种生境柽柳灌丛线虫总数均表现为[WTBX]UC>IS，[WTBZ]不同生境柽柳灌丛冠幅内线虫总数表现为：SD>RW>SW，冠幅外线虫总数SD>RW>SW；对线虫营养类群和主要功能团分析结果表明，固定沙丘冠幅内外土壤线虫以食细菌线虫为主，2种湿地生境冠幅内外以植物寄生线虫为主，cp-2的食细菌线虫（Ba₂）功能团对食细菌线虫（BF）总数起决定作用，土壤中的水溶性盐分对Ba-2功能团线虫具有显著的抑制效应。而cp-3的植物寄生线虫（H₃）在植物寄生线虫（PP）中为主要功能团，H₃功能团线虫与EC相关性不显著，说明该功能团对土壤水溶性盐分具有一定的适应性。通过对土壤线虫群落结构特征的分析，能够从土壤生物学角度揭示干旱区不同生境柽柳灌丛土壤微环境的不同。

关键词: 土壤线虫, 柽柳, 灌丛, 湿地, 沙丘, 临泽县, 甘肃

Abstract: In this paper, an investigation on the soil nematode communities under the canopy of Tamarix spp. at different habitats including sand dune, riverside wetland and saline wetland was conducted in Linze town, Gansu Province. In the study 1 245 soil nematode individuals in 20 genera were captured. The results show that the total number of nematodes was significantly higher in the soil under the canopy of Tamarix spp. than that in the soil out of the canopy at all the habitats; the total number of nematodes under the canopy ofTamarix spp. was higher than that out of the canopy at all the habitats, and that under and out of the canopy was in an order of fixed dune > riverside wetland > saline wetland. The bacterivores of cp-2 guild (Ba₂) were dominant in bacterivores over fixed dune, whereas the herbivores of cp-3 guild (H₃) were dominant in plant parasites and prevalent in the both wetland soils. There was a significant restriction of soil salinity to the Ba₂ guild, but a few effect on the H₃ guild. It was found that the analysis on soil nematode communities is a useful method for interpreting the soil ecological process under the canopy of Tamarix spp. in arid area.

Key words: soil nematode, Tamarix spp., canopy, wetland, sand dune, Linze County, Gansu Province

中图分类号:

S154.38

王雪峰, 苏永中, 刘文杰, 杨荣, 杨晓. 不同生境柽柳灌丛土壤线虫群落特征[J]. 干旱区研究, 2011, 28(6): 1057-1063.

WANG Xue-Feng, SU Yong-Zhong, LIU Wen-Jie, YANG Rong, YANG Xiao. Characteristics of Soil Nematode Communities under the Canopy of Tamarix spp. in Different Habitats[J]. , 2011, 28(6): 1057-1063.

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