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华北落叶松人工林营养元素的生物循环(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2002年05期
Page:
49-52
Column:
研究论文
publishdate:
1900-01-01

Article Info:/Info

Title:
The Biocycle of Larix principis-ruppechtii Forest Plantation in South Slope of Qinlin Mountains
Article ID:
1000-2006(2002)05-0049-04
Author(s):
XIE Hui cheng 1YANG Mao sheng 2
1.Shandong Agriculture University,Taian 271000,China;2.NW Sci Tech University of Agriculture and Forest,Yangling 712100,China
Keywords:
Larix principis ruppechtii MagyrForest plantationNutrient elementsBiocycle
Classification number :
S718.554.2
DOI:
10.3969/j.jssn.1000-2006.2002.05.012
Document Code:
A
Abstract:
The ecosystem of Larix principis ruppechtii Magyr forest plantation in south slope of Qinlin Mountains totally contained nutrient elements 1.38×10 5 kg/hm 2,in which the soil,arbor,shrub,grass and litter possessed nutrient elements 1.37×10 5,837.85,171.17,42.86,348.90 kg/hm 2 respectively.Distribution characteristics of nutrient elements in ecosystem of Larix principis ruppechtii forest plantation were:amounts stored by soil>>amounts stored by arbor>amounts stored by litter>amounts stored by ground vegetation.The annual uptake, store and return of the nutrient elements were 92.29 ,30.36 and 61.98 kg/hm 2 respectively.Different nutrient elements had different element return ratios.The element return ratios of N,P,K,Ca and Mg were 0.825,0.704,0.501,0.602 and 0.689 respectively.Compared with the biocycle characteristics of indigenous tree natural forest or plantation,it was found that Larix principis ruppechtii forest plantation had no obviously negative effect on soil.

References

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Last Update: 1900-01-01