鲁中山区华山林场典型林分的土壤养分和微生物生物量特征  

Characteristics of Soil Nutrients and Microbial Biomass of Typical Stands in Huashan Forest Farm in Central Mountainous Area of Shandong Province

作　　者：付德刚 高赞东 韩敬 汪晓红 郑惠中 赵文太 戴风龙 亓军霞 许景伟[5] 囤兴建[5] 李辉 FU Degang;GAO Zandong;HAN Jing;WANG Xiaohong;ZHENG Huizhong;ZHAO Wentai;DANG Fenglong;QI Junxia;XU Jingwei;DUN Xingjian;LI Hui(Shandong Provincial Forestry Protection and Development Service Center,Ji’nan Shandong250014;Shandong Province College of Agriculture and Forestry Science,Linyi University,Linyi Shandong276000;Landscaping and Forestry Development Centre of Laiwu District,Ji’nan Shandong 250014;State-owned Huanshan forest farm of Laiwu District,Ji’nan Shandong 271100;Shandong Research Institute of Forestry,Ji’nan Shandong 250014)

机构地区：[1]山东省林业保护和发展服务中心,山东济南250014 [2]临沂大学农林科学学院,山东临沂276000 [3]济南市莱芜区园林绿化和林业发展中心,山东济南271100 [4]济南市莱芜区国有华山林场,山东济南271100 [5]山东省林业科学研究院,山东济南250014

出　　处：《山东林业科技》2022年第5期54-60,共7页Journal of Shandong Forestry Science and Technology

基　　金：山东省国有林场森林质量精准提升示范工程(国有林场森林抚育技术研究)项目。

摘　　要：选择鲁中山区华山林场不同林分密度的侧柏纯林和侧柏-黑松混交林为研究对象,对其土壤养分指标和微生物生物量指标特征进行分析。结果表明:1)华山林场典型林分土壤养分和微生物生物量氮为强变异,土壤pH值呈酸性。2)相同林分类型中土壤有机质、全氮、碱解氮、有效磷含量均随着林分密度的升高而降低,且侧柏纯林的土壤养分含量明显高于侧柏-黑松混交林。3)侧柏纯林中,林分密度1950株/hm^(2)的土壤微生物生物量碳含量为3000株/hm^(2)的1.15倍,土壤微生物生物量氮含量为3000株/hm^(2)的85.99%。4)土壤微生物生物量碳含量与全氮、碱解氮呈极显著正相关,与有机质、有效磷呈显著正相关,可作为评价土壤养分情况的指标;土壤有效磷含量,可直接影响土壤微生物生物量碳、全氮、碱解氮含量及pH值,间接影响土壤有机质、土壤微生物生物量氮含量,说明研究区域内土壤磷转化与氮素循环、有机质代谢关系密切。Taking the typical pure forest of Platycladus orientalis and Pinus thunbergii Parl-Platycladus orientalis mixed forest in Huashan forest farm in central mountainous area of Shandong province as the research objects,the characteristics of soil nutrients index and microbial biomasses index were analyzed.The results showed that the coefficients of variation of soil nutrients and microbial biomasses nitrogen intensity showing strong variability,the soil pH value was acidic.In the same stand type,the contents of soil organic matter,total nitrogen,available nitrogen and available phosphorus decreased with the increase of stand density,and the soil nutrient content of Platycladus orientalis pure forest was significantly higher than that of Pinus thunbergii Parl-Platycladus orientalis mixed forest.In the pure Platycladus orientalis forest,the soil microbial biomass carbon content of 1950 plants/hm^(2) was 1.15 times of 3000 plants/hm^(2),and the soil microbial biomass nitrogen content was 85.99%of 3000 plants/hm^(2).Soil microbial biomass carbon content was extremely significantly positively correlated with total nitrogen and alkali hydrolyzed nitrogen,and positively correlated with organic matter and available phosphorus,which could be used as an index to evaluate soil nutrient status.Soil available phosphorus content can directly affect soil microbial biomass carbon,total nitrogen,alkali hydrolyzed nitrogen content and pH value,and indirectly affect soil organic matter and soil microbial biomass nitrogen content,which indicates that phosphorus transformation is closely related to nitrogen cycle and organic matter metabolism in the study area.

关 键 词：典型林分 土壤养分 土壤微生物生物量碳 土壤微生物生物量碳氮 

分 类 号：S714.8[农业科学—林学]