Vertical Distribution and Seasonal Fluctuation of Nematode Trophic Groups as Affected by Land Use
Vertical Distribution and Seasonal Fluctuation of Nematode Trophic Groups as Affected by Land Use作者机构：Key Laboratory of Terrestrial Ecological Process Institute of Applied Ecology Chinese Academy of Sciences Shenyang 110016 （China）. Graduate School of the Chinese Academy of Sciences Beijing 100039 （China）
出 版 物：《Pedosphere》 (土壤圈（英文版）)
年 卷 期：2006年第16卷第2期
页 面：169-176页
核心收录：
学科分类：0818[工学-地质资源与地质工程] 09[农学] 0903[农学-农业资源与环境] 0901[农学-作物学] 090301[农学-土壤学]
基 金：Supported by the National Natural Science Foundation of China (No. 30570337)
主 题：aquic brown soil land uses soil nematode trophic groups vertical distribution
摘 要：A field investigation was conducted at the Shenyang Experimental Station of Ecology, Chinese Academy of Sciences, in an aquic brown soil of Northeast China under three land use types (cropland, abandoned cropland, and woodland) in order to evaluate whether the vertical distribution and seasonal fluctuation for the number of total nematodes and trophic groups could reflect soil ecosystem differences and to determine the relationships between soil chemical properties and soil nematodes. The majority of soil nematodes were present in the 0-20 cm soil layers, and for these land use types plant parasites were the most abundant trophic group. In the abandoned cropland the numbers of plant parasites reached a peak on the August sampling date, whereas the cropland and woodland peaked on the October sampling date. Meanwhile, in all land use types the number of total nematodes, bacterivores, plant parasites, and omnivores-predators was negatively (P 0.05, except for bacterivores in cropland, which was not significant) correlated with bulk density, and positively (P 0.05, except for fungivores in abandoned cropland, which was not significant) correlated with total organic carbon and total nitrogen.
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