川中丘陵区不同坡地利用方式的土壤肥力特征

[目的]为了探讨紫色土坡地典型利用方式(旱地、柑橘园、林地)对土壤肥力的影响特征。[方法]采用野外调查、取样和室内实验分析相结合的方法,对乐至县童家小流域的土壤理化性状进行了对比分析。[结果]林地受人为扰动少,土壤肥力高;柑橘园、旱地受人类耕作活动影响大,因经济产出效益不同,农户对土地的劳力与经济投入不同,使得柑橘园土壤肥力高于旱地土壤。[结论]不同坡地利用方式对土壤肥力具有较明显的影响。

Effects of Slope Land Use Types on Soil Fertility in Hill Region of Middle Sichuan

[Objective] The research aimed to study the effects of different slope land use types on soil fertility.[Method] Soil physical and chemical properties under the three main types of land use(farmland,orchard land,forest land) in Tongjia watershed in the hill region of the middle Sichuan were studied through field soil sampling and laboratory analysis.[Result]The little anthropogenic disturbance was get in forest land,where the soil fertility was high.Both orchard land and farmland usually got remarkable influences from human activities.However,the soil fertility was higher in orchard land than that in farmland,because they had some differences for land management and use,such as the economic output,labor input,economic input and so on.[Conclusion] The different slope land uses had obvious effects on soil fertility.