贵阳市白云岩地区不同土地利用方式对土壤物理性质的影响

不同的土地利用方式影响着土壤的理化性质及土壤质量。用空间代替时间序列的研究方法,对贵阳市白云岩地区4种主要土地利用方式的土壤物理性质进行了样地调查与土样分析。结果表明不同土地利用方式条件下的土壤物理性质指标(土壤水分及持水性、土壤容重、土壤比重)存在较大差异,变化规律亦不一致。在较大区域内土地利用方式对土壤物理性质的影响没有小区域内土地利用方式对土壤物理性质的影响显著。良好的植被条件与合理的土地利用能有效地保持水土,改善土壤质量,有效防止土壤退化,植被恢复特别是灌草丛的恢复对改善土壤质量有重要作用。

Effects of land use on soil physical properties in dolomite area of Guiyang

The different land use patterns affect soil physical property and soil fertility quality. By means of the method of space instead of time, we research and analyze soil physical property in 4 main land use patterns in the dolomite areas in Guiyang. The results reveal that the soil physical property indexes are different, and so are the change rules. The effect of land use pattern on soil physical property in a small area is much more markble than that in a wider area. The favorable vegetation and reasonable land use pattern are important for soil and water conservation to improve soil fertility quality, and avoid soil degeneration. Vegetation recovery, especially shrub grassland, are very important.