鹫峰地区不同植被群落土壤性质及饱和导水率特征  

Soil Properties and Saturated Hydraulic Conductivity Under Different Plant Communities in Jiufeng Area

作　　者：孟晨[1] 牛健植[1] 骆紫藤 杜晓晴[1] 武晓丽[1] 

机构地区：[1]北京林业大学水土保持学院水土保持与荒漠化防治教育部重点实验室,北京100083

出　　处：《水土保持学报》2015年第3期156-160,共5页Journal of Soil and Water Conservation

基　　金：国家自然科学基金项目"林木根系对溶质优先运移影响机制研究"(41271044)

摘　　要：为了探究鹫峰国家森林公园不同植被群落土壤性质及饱和导水率的特征,对鹫峰地区6种不同植被群落林区进行土壤取样,测定土壤基本性质与养分元素含量,并用环刀分层取土进行水分穿透试验,测定土壤饱和导水率,对比分析不同植被群落土壤性质、土壤养分及饱和导水率特征。结果表明:鹫峰地区不同植被群落土壤石砾含量及土壤分形维数表现为裸地>矮型草本>矮型灌木>乔木林>混交林;土壤密度、土壤含水率、土壤孔隙度、土壤饱和导水率及表层(0—30cm)土壤全氮、速效钾、速效磷含量均表现为混交林>纯林>灌木林>草本>裸地。在今后的人工林营建中,要优先考虑适宜的混交林,因为其对土壤的改良以及水源涵养能力的提高有最优效果。In order to analyze soil properties and saturated hydraulic conductivity under different plant communities in Jiufeng area, soils under different vegetation communities in Jiufeng forest area were sampled and the basic properties of soil and soil nutrient contents were measured. Besides, water permeability experiment was conducted to determine saturated hydraulic conductivity of soil, in which soil was collected by foil samplers, using stratified sampling method. The characteristics of soil properties, soil nutrients and saturated hydraulic conductivity under different plant communities were compared. The results showed that soil gravel content and aggregate fractal dimension under different plant community listed in the following order.. Bare tand〉herb〉shrub〉pure forest〉mixed forest. Soil bulk density, moisture content, porosity, saturated hydraulic conductivity and the contents of total nitrogen, available potassium and available phosphorus of surface soil（O-30 cm） all followed the order. Mixed forest〉pure forest〉 shrub〉herb〉bare land. Therefore, mixed forest should be the priority for future afforestation, which showed the best effect on improvement of soil properties and water conservation.

关 键 词：植被群落 土壤含水率 土壤孔隙度 石砾含量 土壤饱和导水率 

分 类 号：S725.1[农业科学—林木遗传育种] S151.9[农业科学—林学]