湿地松生物量、材积与土壤条件的相关性  

Relevance of Biomass,Volume and Soil Conditions of Pinus elliottii

作　　者：龙蔚[1] 李田[1] 杨桦[1] 岳军伟[1] 刘光正[1] 

机构地区：[1]江西省林业科学院,江西南昌330013

出　　处：《江西林业科技》2011年第5期8-10,64,共4页Jiangxi Forestry Science and Technology

基　　金：国家科技支撑计划项目(2006BAD03A1602)

摘　　要：5种密度的湿地松人工林标准木平均生物量为44.32～94.92 kg,单株材积为0.083~0.161 m3。无论0～20 cm土层,还是20～40 cm土层,pH值和放线菌含量都和林木的材积、生物量有显著的相关性。土壤容重、水分含量与林木材积、生物量等指标的相关性分析表明,保证林地土壤充足的水分和定期翻土有利于林木的生长。下层土壤中的过氧化酶、脲酶活性和湿地松的材积、生物量、树干生物量均有显著负相关关系,而蔗糖酶活性却与湿地松针叶生物量有显著正相关关系。氮、磷、钾养分含量与湿地松材积、生物量、树干、树枝相关性不显著,全磷含量与针叶生物量呈显著正相关关系,而速效磷与针叶生物量为极显著负相关关系,其中的深层次原因需要进一步研究。The average biomass of the sample trees of five kinds of density of Pinus elliottii plantations were 44.32～94.92 kg,and the volume were 0.083～0.161 m3.Whether 0~20 cm or 20~40 cm of the soil,pH value,actinomyces quantity significant had correlation with volume and biomass of sample trees.Relevance of soil bulk density,soil moisture content and volume,biomass and other indicators of sample trees showed that adequate water and regular tilling were advantage to forest growth.The peroxidase and urease activities of subsoil had significantly negatively correlation with volume,biomass,trunk biomass of P.elliottii sample trees,but the sucrase activity had significant positive correlation with biomass of P.elliottii needles.The nutrients in soil such as nitrogen,phosphorus and potassium had no significant correlation with volume,biomass,trunk biomass,branch biomass of P.elliottii sample trees,the deep-seated reasons that phosphorus was significantly positively correlated with needle biomass,while the correlation between available phosphorus and needle biomass was significantly negative needed further study.

关 键 词：湿地松 生物量 材积 土壤条件 

分 类 号：S791.246[农业科学—林木遗传育种]