Yang Ning, Zou Dong-Sheng, Yang Man-Yuan, Hu Li-Zhen, Zou Fang-Ping, Song Guang-Tao, Lin Zhong-Gui
College of Landscape Architecture, Hunan Environmental-Biological Polytechnic College, Hengyang 421005, Hunan, China.
Ying Yong Sheng Tai Xue Bao. 2013 Jan;24(1):90-6.
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.
本文采用空间序列代替时间序列，研究了中国中南部湖南省衡阳市紫色土坡地不同恢复阶段植被特征与土壤性质之间的关系。不同恢复阶段土壤理化性质存在明显差异。从草地、灌草、灌木到乔灌，土壤有机质、全氮和有效氮以及含水量显著增加，土壤容重明显降低，土壤全磷和有效磷含量变化不大，土壤pH值逐渐降低，但不同恢复阶段之间未观察到显著差异。在不同恢复阶段，植物群落生物量对土壤微生物数量和组成有影响。土壤细菌和真菌数量与植物群落地上生物量呈显著正相关，但土壤放线菌数量与植物群落地上生物量相关性较小。在不同恢复阶段，土壤脲酶、蛋白酶、碱性磷酸酶、转化酶、纤维素酶、过氧化氢酶和多酚氧化酶的活性随土层加深而降低，与植物群落丰富度和地上生物量呈显著正相关。
