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|Table of Contents|

不同林龄油松针叶凋落物初期分解特性比较(PDF)

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

Issue:
2013年02期
Page:
39-44
Column:
研究论文
publishdate:
2013-03-31

Article Info:/Info

Title:
Study on initial decomposition characteristics of Pinus tabulaeformis needle litter at different stand age
Author(s):
LYU Ruiheng12 LI Guolei1 LIU Yong1* JIN Hufan1 LIN Na1
1.Key Laboratory for Silviculture and Conservation, Ministry of Education, Beijing Forestry University, Beijing 100083, China;
2.College of Plant Sciences, Tarim University, Alar 843300, China
Keywords:
needle litter stand age decomposition nutrient release Pinus tabulaeformis
Classification number :
S718
DOI:
10.3969/j.issn.1000-2006.2013.02.007
Document Code:
A
Abstract:
To explore the impact of stand age class on litter decomposition process, initial chemical composition, decomposition rate and nutrient releasing process of needle litter were studied with litter bag method in 24, 32, and 40 years old Pinus tabulaeformis plantations in Beijing mountain areas.The results showed that initial inorganic nutrient content, ash content, crude protein content and C/N value were significant differences among three stand ages(p<0.05).Dynamic changes of needle litter weight loss rate were a double-peak curves with an obvious seasonal dynamics. The average annual decomposition rate and decomposition coefficient(k)gradually increased with the stand age. Repeated test showed that weight loss rate,percentage of N remaining were significant differences at different stand ages, but percentage of P, K, Ca, and Mg accumulation and release were not obviously effected by the stand ages(p<0.05).

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Last Update: 2013-03-31