摘要
从土壤理化性质、土壤入渗、地表径流、土壤侵蚀和土壤水分动态等几个方面比较系统地研究了山西省吉县人工油松林水土保持效益。结果表明,油松林具有明显的水土保持效益;水土保持效益受林龄和林分结构的影响,林龄越大,水土保持效益越显著;混交林的水保效益高于纯林。本文还对影响地表径流及土壤侵蚀的各因子作了逐步回归分析,并用谐波分析方法和Spearman秩相关方法建立了土壤水分含量拟合方程,找出了影响水分含量的主要因子。
The purpose of this study is to systematically investigate soil and water conservation benefits of artificial Pinus tabulaeformis forests in Jixian County of Shanxi Province. The study includes an examination of the physical and chemical properties of soil, soil permeability, overland flow, soil loss and soil moisture dynamics. The results helped confirm the projected benefits of artificial Pinus tabulaeformis forests. Such benefits were found to be subjected to the variables of age and forest structure. Older forests tend to benefit from the Pinus tabulaeformis more than younger ones. The same is true of mixed forests over pure forests. Using the step by step regression method, the investigators found the variables affeeting the study's runoff and soil loss. Further benefits of this study include the establishment of a simulation equation for the determination of soil moisture content using spectrum analysis and the Spearman RANKCORR method,and the main factors which influence soil miosture content.
出处
《北京林业大学学报》
CAS
CSCD
北大核心
1991年第4期17-25,共9页
Journal of Beijing Forestry University
关键词
油松林
人工林
水土保持
土壤侵蚀
artificial Pinus tabulaeformis forest, soil and water conservation benefits, soil permeability, soil loss
