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当前位置: 首页 > 文章 > 不同林龄华北落叶松林下土壤理化性质及微生物学指标评价 水土保持通报 2013,33 (6) 88-93
Position: Home > Articles > Assesses of Soil Physicochemical Properties and Microbiology Indicators in Larix Principis-rupprechtii Plantations Bulletin of Soil and Water Conservation 2013,33 (6) 88-93

不同林龄华北落叶松林下土壤理化性质及微生物学指标评价

作  者：
刘杰;马履一;贾忠奎;王西洋;汪加魏;宋春华
单  位：
北京林业大学省部共建森林培育与保护教育部重点实验室
关键词：
华北落叶松;人工林;土壤质量
摘  要：
通过对河北省承德市塞罕坝机械林场种植年限分别为18,22和38a的华北落叶松人工林下土壤理化性质、酶活性和微生物数量等土壤质量指标的综合研究,对土壤质量的变化规律和关键指标进行了分析比较。结果表明:(1)同龄林分下各指标变化差异显著,随着土壤深度的增加,土壤容重、pH值逐渐增大,而土壤含水量、毛管持水量、毛管孔隙度等12个指标则逐渐降低;非同龄林分之间同一指标差异显著。18a林分土壤质量最优指标为过氧化氢酶和细菌数量。22a林分土壤质量最优指标为土壤含水量、毛管持水量、毛管孔隙度、有机质、脲酶活性、真菌数量。38a林分土壤质量最优指标为容重、全钾、速效磷、全氮、放线菌数量。各林分土层之间差异显著(p<0.05)。(2)主成分分析结果表明,土壤容重、毛管持水量、毛管孔隙度、有机质、放线菌和真菌数量可以作为土壤质量评价的主要指标。(3)18,22和38a林下土壤质量综合评分依次为0.122,0.253和-0.375。其中,22a林分下土壤质量的综合评分最高,说明22a华北落叶松人工林林下土壤质量相对较好。
译  名：
Assesses of Soil Physicochemical Properties and Microbiology Indicators in Larix Principis-rupprechtii Plantations
作  者：
LIU Jie;MA Lü-yi;JIA Zhong-kui;WANG Xi-yang;WANG Jia-wei;SONG Chun-hua;Province and Ministries Co-construction Key Lab.for Silviculture and Conservation of Ministry of Education,Beijing Forestry University;
关键词：
Larix principis-rupprechtii;;plantation;;soil quality
摘  要：
In 18 years old,22 years old and 38 years old Larix principis-rupprechtii plantations in Saihanba Forestry Station of Hebei Province,soil quality indicators such as physicochemical properties,enzymatic activities and microbe quantity were researched comprehensively.The key indexes and varying patterns of soil quality were understood by data analyzing.Soil indicators have significant differences in even-aged stands. With the increasing of soil depth,the soil bulk density and pH values magnify correspondingly,while the values of the other 12indicators(including soil water content,capillary water holding capacity,capillary porosity and so on)have an adverse trend.The same indicator among uneven aged stands also has significant difference.The optimal indicators in 18years old stands are the catalase activity and bacteria quantity,while SWC,capillary water holding capacity,capillary porosity,organic matter(OM),urease activity and fungi in 22years old stands,and soil bulk density,total K,rapidly-available phosphorus,total nitrogen and actinomycetes in 38years old.The results of principal components analysis(PCA)showed that the soil bulk density,capillary water holding capacity,capillary porosity,quantities of OM,actinomycetes and fungi are optimal indicators of soil quality.The comprehensive score of Larix principis-rupprechtii soils in 18,22and 38 years old plantations are 0.122,0.253and-0.375,respectively.The highest score of soil quality in 22 years old stands suggests that the soil is the best.

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