Abstract
The vertical distribution of the dominant genera of plant nematodes at the depth of 0–150 cm of an aquic brown soil were studied for four land use patterns, i.e., paddy field, maize field, fallow field and woodland in the Shenyang Experimental Station of Ecology, Chinese Academy of Sciences in November of 2003. The results showed that the numbers of some dominant genera under different land uses decreased with the increase of soil depth.Helicotylenchus was most dominant genus under each land use type. Genera ofFilenchus, Psilenchus andTylenchus in paddy field occurred at the depth of 0–20 cm; whileParatylenchus in fallow field and woodland, as well asPratylenchus in maize field presented in the deeper soil layers (0–80 cm). Significant correlations between the numbers of dominant genera of plant nematodes and soil chemical properties were found in this study. The number ofHelicotylenchus under different land uses was positively correlated with C/N ratio, total C, total N, total P, alkai-N, and Olsen-P. The numbers ofFilenchus andParatylenchus in paddy field,Pratylenchus in maize field andParatylenchus in fallow field were negatively correlated with soil pH, and positively correlated with total C, total N and alkai-N. This study results showed that it is essential to sample at a certain depth according to the vertical distribution information of different genera of plant nematodes in adequately assessing the population size of plant nematodes.
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Foundation item: The project was supported by the Natural Science Foundation of Liaoning Province (No. 20042008) and the Fund of Shenyang Experimental Station of Ecology, Chinese Academy of Sciences (SYZ0301).
Biography: MENG Fan-xiang, (1967-), male, Ph.D. candidate, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, P. R. China.
Responsible editor: Song Funan
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Fan-xiang, M., Wen-ju, L., Wei, O. et al. Vertical distribution of plant nematodes in an aquic brown soil under different land uses. Journal of Forestry Research 16, 39–42 (2005). https://doi.org/10.1007/BF02856852
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DOI: https://doi.org/10.1007/BF02856852