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Relationships between vegetation characteristics and soil properties at different restoration stages on slope land with purple soils in Hengyang of Hunan Province, South-central China.

YANG Ning1,2, ZOU Dong-sheng2, YANG Man-yuan3, HU Li-zhen1, ZOU Fang-ping1, SONG Guang-tao1, LIN Zhong-gui1   

  1. (1College of Landscape Architecture, Hunan EnvironmentalBiological Polytechnic College, Hengyang 421005, Hunan, China; 2College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China; 3Centre of Experiment and Practice Training, Hunan EnvironmentalBiological Polytechnic College, Hengyang 421005, Hunan, China)
  • Online:2013-01-18 Published:2013-01-18

Abstract: By using space series to replace time series, this paper studied the relationships between the vegetation characteristics and soil properties at different restoration stages on the slope land with purple soils in Hengyang of Hunnan Province South-central China. There existed obvious differences in the soil physical and chemical properties at different restoration stages. From grassplot, grass-shrub, shrub to shrub-arbor, the soil organic matter, total and available N, and moisture contents increased markedly, soil bulk density had an obvious decrease, soil total and available P contents changed little, and soil pH decreased gradually, but no significant differences were observed among different restoration stages. At different restoration stages, the biomass of plant community had effects on the quantity and composition of soil microbes. The quantities of soil bacteria and fungi had significant positive correlations with the aboveground biomass of plant community, but the quantity of soil actinomycetes had less correlation with plant community’s aboveground biomass. At different restoration stages, the activities of soil urease, protease, alkaline phosphatase, invertase, cellulase, catalase, and polyphenol oxidase decreased with increasing soil layer, and had significant positive correlations with plant community’s richness and aboveground biomass.