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应用生态学报 ›› 2001, Vol. ›› Issue (5): 667-671.

• 研究论文 • 上一篇    下一篇

桥山林区油松人工林营养元素分配与积累的研究

高甲荣1, 肖斌2   

  1. 1. 北京林业大学水土保持学院, 北京 100083;
    2. 西北农林科技大学, 杨凌 712100
  • 收稿日期:2000-05-22 修回日期:2000-09-14 出版日期:2001-09-25
  • 通讯作者: 高甲荣,男,1963年生,博士,副教授,主要从事森林生态、流域管理方面的研究工作,发表论文40余篇.
  • 基金资助:
    林业部重点资助项目(91-01-1).

Nutrient distribution and accumulation pattern of Chinese pin e plantations in Qiaoshan forested region

GAO Jiarong1, XIAO Bin2   

  1. 1. Beijing Fore stry University, Beijing 100083;
    2. Northwest Sci Tech University of Agriculture and Forestry, Yangling 712100
  • Received:2000-05-22 Revised:2000-09-14 Online:2001-09-25

摘要: 在陕西省桥山林区3块油松人工林样地中,对油松人工林生态系统各组分中N、P、K、Ca和Mg等5种营养元素的含量、分配格局、积累规律以及它们与密度间的关系进行了研究.结果表明,油松人工林不同器官中营养元素含量排序为树叶>树枝>树根>树皮>干材;在26年生油松人工林现存量中,N、P、K、Ca、Mg总量分别为214.44、22.91、158.88、167.36和29.42kg·hm-2;乔木层、灌木层、草本层和死地被物层养分贮量分别为498.98、3.32、7.31和83.40kg·hm-2;油松人工林N、P、K、Ca和Mg的富集系数分别为3.98、4.28、5.69、1.08和4.01;每生产1t有机物质需要这5种元素约8.43~9.09kg·hm-2a-1;乔木层中营养元素积累量为288.26~606.07kg·hm-2,其中干材营养元素积累量约占乔木层的14.1%~16.8%.

Abstract: The contents,accumulation and distribution of 5 nutrient elements (N,P,K,Ca,Mg) were studied in 3 plots of Chinese pine plantations in Qiaoshan forested region in Shaanxi Province.The results showed that the nutrient content in various orga ns was in the order of needle>branch>root>bark>stem.In the 26 year plantati on,the storage of N,P,K,Ca and Mg was 214.44,22.91,158.88,167.36 and 29.42kg·hm-2.The total element accumulation was 498.98 kg·hm-2 in the tree laye r,3.32kg·hm-2 in the shrub layer,7.31kg·hm-2 in the herb layer and 8 3.40kg·hm-2 in dead soil covering layer.The enrichment ratios of N,P,K, Ca and Mg in Chinese pine plantation were 3.98,4.28,5 69,1.08 and 4.01.The net pr oduction of organic matter per ton needs a total five elements of 8.43~9.09kg· hm-2·yr-1.The total nutrient elements accumulation in tree layer wa s 288.26~606.07kg·hm-2,of which stem accounted for 14.1~16.8%.

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