川西米亚罗林区不同林分类型土壤养分性质研究  

Study on the Soil Nutrient in Different Forest Types in Miyaluo Forest Area of Western Sichuan

作　　者：霍小鹏[1,2] 张兴华 李贤伟[2] 张健[2] 张毅 

机构地区：[1]西南油气田分公司安全环保与技术监督研究院,成都610213 [2]四川农业大学生态林业工程省级重点实验室,四川雅安625014 [3]金堂县林业局,四川金堂610400

出　　处：《水土保持研究》2012年第3期58-62,66,共6页Research of Soil and Water Conservation

基　　金：国家"十一五"科技支撑项目(2006BAC01A11);国家自然科学基金项目(30771717);教育部重点学科博士点基金(20050626001)

摘　　要：采用野外调查、取样和室内实验分析相结合的方法,研究了川西米亚罗林区9种林分类型林地土壤养分特征。结果表明:(1)9种林分类型土壤pH均小于5.6,属于酸性土壤;林地土壤有机质含量大小顺序为:冷杉林(FF)>40a云杉—落叶松林(D)>70a云杉林(F)>40a云杉林(C)>灌木林(SF)>桦木林(BF)>40a落叶松林(B)>25a云杉—落叶松林(A)>55a云杉林(E);冷杉林土壤全N含量最大,25a云杉—落叶松林最小;(2)9种林分类型中,40a落叶松林地全K含量最大,40a落叶松—云杉林土壤速效K含量最大;(3)9种林分类型中,40a落叶松林地全P含量最大,速效P含量以55a云杉林为最大;(4)9种林地中,土壤pH与土壤有机质极显著负相关,与土壤全N显著负相关;土壤有机质含量与全氮极显著正相关,与土壤有效磷和全钾显著负相关;土壤全钾和全磷分别与土壤速效钾和有效磷相关性不显著。In this paper, by using the method of soil sampling and laboratory analysis, the soil nutrient of dif- ferent forest types in Miyaluo forest area of western Sichuan have been investigated. The results showed that. （1） the order of the soil organic matter contents in the different forest types was fir forest（FF）〉40 a Picea baifouriana--Lariac kaempferi plantation （D） 〉 70 a Picea baifouriana plantation （F） 〉 40 a Picea baifouriana plantation？〉shrub forest（SF） 〉birch forests（BF） 〉40 a Larix kaernpferi plantation（B） 25 a Picea baifouriana--Lari：c kaernpferi plantation （A） 〉 55 a Picea baifouriana plantation （E）, and the maximum soil total N content in different forest types was found in FF; （2） the maximum soil total K content in different forest types was observed in B, the maximum soil available K content was found in D; （3） the maximum soil total P content was observed in B in the different forest types, and the maximum soil available P content was found in E; （4）there was great significant negative correlation between soil pH and soil organic matter content, and negative correlation between soil pH and soil total N. The significant positive correlation was found between soil organic matter content and soil total N, and soil available P and soil total K had negative correlation with soil organic matter content. There was no obvious correlation between soil total K and available K, as well as soil total P and soil awilahlo P

关 键 词：米亚罗 林分类型 土壤养分 

分 类 号：S714.2[农业科学—林学] S714.8