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【目的】研究探讨土地利用对土壤性质影响的区域差异性。【方法】选择4类土地利用方式(天然林、人工林、灌丛和耕地),分别在山西寿阳县和四川丹棱县野外采集土壤样方进行测定,利用统计分析法研究土地利用对土壤性质影响的区域差异。【结果】不同土地利用方式对土壤性质的影响差异显著。人类活动干扰小的土地利用方式的土壤有机质、全氮含量和含盐量等普遍高于人类影响较强的土地利用方式。相同的土地利用方式对土壤性质的影响具有空间差异。即便在相同的土地利用方式下,不同的耕作制度和田间管理措施(灌溉、施肥、农药等)也会造成土壤特性的区域异质性。【结论】不同土地利用方式对土壤性质影响的区域差异揭示了人类活动对环境变化影响的区域差异,可以在一定程度上解释“人-地”的复杂性关系,研究结果可为国家在区域土地规划、作物栽培布局和水土保持政策制订等提供科学依据。
【Objective】 The purpose of this study is to investigate the regional differences in the impact of land use on soil properties. 【Method】 Four types of land use patterns (natural forests, plantations, shrubs and arable land) were selected. Soil samples were collected from the field in Shouyang County, Shanxi Province and Danling County, Sichuan Province respectively for determination. The effects of land use on soil Regional differences in the nature of influence. 【Result】 The effects of different land use types on soil properties were significantly different. Soil organic matter, total nitrogen content and salt content of land use patterns with small interference with human activities are generally higher than land use patterns with strong human impacts. The same land use pattern has a spatial difference on the soil properties. Even under the same land-use patterns, different farming systems and field management practices (irrigation, fertilization, pesticides, etc.) can also create regional heterogeneity in soil properties. 【Conclusion】 The regional differences in the impact of different land use types on soil properties reveal the regional differences in the impact of human activities on environmental change, which can explain the complexity relationship of “people-land” to a certain extent. The research results can be as follows: Regional land planning, crop cultivation and distribution and water and soil conservation policies to provide scientific basis.