川东北丘陵地区不同土地利用方式的土壤紧实度特征

摘要

[Objective] To study the characteristics of soil compaction under different land use methods in the hilly area of Northeast Sichuan.[Method] The research object was the land use types of the China West Normal University Campus(Huafeng District) in Nanchong City.There were 25 sampling sites in total.The change of soil compaction in the hilly area was analyzed.[Result] The soil compaction index increased with increasing soil depth and decreased with increasing slope in general.While different plant methods might bring about various soil compaction value;The soil compaction value increased with higher vegetation coverage and better vertical structure of vegetation,and the land surface dry leaves would decrease the soil compaction.[Conclusion] The study of the soil compaction will provide basic data for land use,soil and water conservation research and the simulation and analysis of city greening.%[目的] 研究川东北丘陵地区不同土地利用方式的土壤紧实度特征.[方法]以西华师范大学华凤校区不同土地利用类型为研究对象,选取25个测样点,分析丘陵地区土壤紧实度的变化特征.[结果]土壤紧实度随土层深度的增加而增加,随坡度的增加而降低.但植被条件不同,也可能导致其土壤紧实度有所差异;植被覆盖率越高,其土壤紧实度越大;植被垂直结构越好,其土壤紧实度越高;枯枝落叶降低了土壤表层的紧实度.[结论]该研究对川东北丘陵地区的土地利用与水土保持研究,以及城市绿化的模拟与分析提供基础数据.