Responses of nematode communities to different land uses in an aquic brown soil |
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Authors: | Qi Li Wenju Liang and Wei Ou |
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Institution: | (1) Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China;(2) Graduate University of Chinese Academy of Sciences, Beijing, 100049, China |
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Abstract: | An analysis of the seasonal and vertical distribution of soil nematode communities under three contrasting land uses, i.e.,
cropland, abandoned cropland and woodland was conducted in an aquic brown soil. The results showed that different land-use
types affected the spatiotemporal distribution of soil nematodes and their dominant genera, and different dominant genera
showed different responses to land use. In the abandoned cropland and woodland, most dominant genera were present in the 0–20
cm layers and Chiloplacus was mainly distributed in the 5–30 cm layers, while in the cropland, Pratylenchus exhibited an even distribution from the 0–5 cm to the 40–50 cm depth. Soil environmental parameters under different land
use could influence soil nematodes; soil porosity, total organic C, total N and the C/N ratio could positively influence the
abundance of some dominant genera. Faunal profiles revealed that environmental stability and the homeostasis in the abandoned
cropland and woodland lead to higher levels of community structure, and the soil food web tends to succeed to maturity. Nematode
faunal analyses are a useful indicator for interpreting the stress and/or nutrient conditions under different land uses.
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Translated from Biodiversity Science, 2007, 15(2): 172–179 译自:生物多样性] |
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Keywords: | soil nematodes dominant genera faunal analysis land use aquic brown soil |
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