摘要
采用调查取样和定量分析方法对吉林省蛟河市林业实验区管理局林场的不同龄组红松阔叶混交林(中龄林、近熟林、成熟林和过熟林)土壤的理化性质进行分析。结果表明:随着林龄增加,土壤容重变化并不显著;持水量、凋落物层的厚度以及土壤呼吸速率呈现上升的趋势,土壤总孔隙度基本保持不变。不同龄组的土壤在营养元素等化学性质方面,都存在明显的差异,变化趋势复杂,总体上与有机质变化一致。随着林龄增加,土壤肥力状况变好,过熟林土壤肥力最好,并且林地土壤涵养水源和保持水土功能有所加强,对维持周围生态系统有重要作用。
The survey sampling and quantitative analysis method were used to analyze the physical ann cnennca properties of soil in korean pine and broad-leaved forests at different age groups （middle-aged forest, near-matureforest, mature forest, and over mature forest） in Forest Farm of Jiaohe Management Bureau, Jilin Province. Theresults showed that soil bulk density did not change significantly with the development of succession, water holdingcapacity, litter layer thickness and soil respiration rate showed an upward trend, and total soil porosity essentiallyunchanged. With regard to the soil chemical properties in nutrients for the forests at different age group, therewere significant differences with complex trends. In general, the trends were consistent with that of the organic mat-ter. After a comprehensive comparison of the physicochemical properties, it is concluded that with the successionmoving forward, soil fertility status was improved, and the forest soil fertility of old growth forest was the best. Inaddition, soil and water conservation function was enhanced with the increasing age, and the forest were playing an very important role in maintaining the surrounding ecosystems.
出处
《西部林业科学》
CAS
2015年第5期26-32,44,共8页
Journal of West China Forestry Science
基金
中央高校基本科研业务费专项资金资助(2572015CA01)
"十二五"国家科技支撑计划专题(2012BAC01B03-3)
国家自然科学基金项目(31400539)资助
关键词
土壤肥力
理化性质
森林土壤
龄组
soil fertility
physicochemical properties
forest soil
age groups
