北京山地7种人工纯林土壤养分研究  

STUDY ON SOIL NUTRIENT OF SEVEN ARTIFICIAL FORESTS IN MOUNTAIN OF BEIJING

作　　者：陈波[1] 鲁绍伟[1] 李少宁[1] 潘青华[1] 张玉平[1] 

机构地区：[1]北京市农林科学院林业果树研究所,北京100093

出　　处：《内蒙古农业大学学报（自然科学版）》2014年第4期46-52,共7页Journal of Inner Mongolia Agricultural University(Natural Science Edition)

基　　金：北京市科技专项"石佛寺引种试验林评价及适生树种筛选(Z111105055311043)"

摘　　要：本文通过北京山地7种人工纯林的土壤分析,研究了不同林分类型对土壤酸碱度、有机质、全量养分和速效养分的影响,并对不同土壤养分进行了主成分分析。结果表明:7种不同林分的土壤p H值均为弱酸性,其变化范围为4.70-7.55;不同土层土壤有机质表现为表层(0cm-10cm)>中层(10cm-20cm)>下层(20cm^40cm),有机质均值在24.28g·kg-1~58.15g·kg-1之间;土壤全磷含量均值为2.94g·kg-1~6.58g·kg-1;土壤全氮含量均值为1.20g·kg-1~2.83g·kg-1;壤速效钾含量均值为69.39mg·kg-1~227.70mg·kg-1;土壤速效磷含量均值在4.25mg·kg-1~8.02mg·kg-1之间;土壤硝态氮含量均值在3.30mg·kg-1~12.10mg·kg-1之间;土壤铵态氮含量均值在0.65mg·kg-1~1.91mg·kg-1之间;不同林分类型土壤养分综合效应评价核桃楸纯林最大,为6.237;华山松纯林最小,为-1.968。综合来看,随土层厚度增加土壤养分含量减少;阔叶林土壤养分含量大于针叶林。This paper analysis 7 artificial pure forest of soil in Beijing mountain,having studied the different forest types on soil p H,organic matter,nutrients and available nutrients affect,and principal component analysis on soil nutrients in different. Results show that7 different kinds of forest soil p H value was weak acidity,the range 4. 70- 7. 55; different layers for surface soil organic matter（ 0cm~ 10cm） 〉 Middle（ 10 cm ~ 20cm） 〉 lower（ 20 cm ~ 40cm）,organic means 24. 28g·kg- 1- 58. 15g·kg- 1; soil total phosphorus contents were 2. 94g·kg- 1~ 6. 58g·kg- 1; Mean total soil nitrogen content as 1. 20g·kg- 1~ 2. 83g·kg- 1; soil available potassium in content value 69. 39 mg · kg- 1~ 227. 70 mg · kg- 1; values of soil available phosphorus content in 4. 25mg·kg- 1~ 8. 02 mg ·kg- 1; soil nitrate content is 3. 30 mg·kg- 1 ~ 12. 10mg·kg- 1; soil ammonium nitrogen content is 0. 65 mg·kg- 1~ 1. 91mg·kg- 1; Evaluation of soil nutrients in different forest types of comprehensive effect of Juglans mandshurica plantation,6. 237; Pinus armandii pure forest is minimum,- 1. 968. Taken together,increases with the thickness of soil nutrient content in soil reduced soil nutrient concentrations than coniferous forests of broad- leaved forests.

关 键 词：北京山地 人工纯林 土壤养分 

分 类 号：S715.7[农业科学—林学]