[1]佘汉基,蔡金桓,薛立*,等. 模拟外源性氮磷对尾叶桉和马占相思混合凋落叶分解的影响[J].西北林学院学报,2017,32(6):45-52.[doi:10.3969/j.issn.1001-7461.2017.06.07]
 SHE Han-ji,CAI Jin-huan,XUE Li*,et al. Effects of Nitrogen and Phosphorus Additions on the Decomposition of Mixed Leaf Litter in Eucalyptus urophylla and Acacia mangium Plantations[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2017,32(6):45-52.[doi:10.3969/j.issn.1001-7461.2017.06.07]
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 模拟外源性氮磷对尾叶桉和马占相思混合凋落叶分解的影响()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第32卷
期数:
2017年第6期
页码:
45-52
栏目:
出版日期:
2017-11-30

文章信息/Info

Title:
 Effects of Nitrogen and Phosphorus Additions on the Decomposition of Mixed Leaf Litter in Eucalyptus urophylla and Acacia mangium Plantations
文章编号:
1001-7461(2017)06-0045-08
作者:
 佘汉基蔡金桓薛立*郑欣颖
 (华南农业大学 林学与风景园林学院,广州 510642)
Author(s):
 SHE Han-jiCAI Jin-huanXUE Li*ZHENG Xin-ying
 (College of Forestry and Landscape Architecture,South China Agricultural University,Guangzhou,Guangdong 510642,China)
关键词:
 尾叶桉马占相思凋落叶分解速率外源性N和P养分含量
Keywords:
Eucalyptus urophylla Acacia mangium leaf litter decomposition rate N and P addition nutrient content
分类号:
S725.5
DOI:
10.3969/j.issn.1001-7461.2017.06.07
文献标志码:
A
摘要:
 以广东省云勇林场尾叶桉(Eucalyptus urophylla)和马占相思(Acacia mangium)的混合凋落叶为材料,采用尼龙网袋分解法,设置对照(CK)、施N(N 10 g·m-2)、施P(P 5 g·m-2)、施N+P(N 10 g·m-2+ P 5 g·m-2)4种处理,研究了外源性氮、磷对凋落叶分解和凋落叶分解残留物中N、P、K含量动态的影响。结果表明,施N处理对尾叶桉和马占相思林下混合凋落叶分解多为抑制作用,施P和N+P处理能起到加快凋落叶分解的作用。尾叶桉和马占相思林下各处理的凋落叶分解残留物的N含量、施P和N+P处理的凋落叶分解残留物的P含量在分解过程中总体呈现波动上升的趋势,而各处理的凋落叶分解残留物的K含量变化规律不明显。建议该地区适当施用P肥,促进凋落物的分解和养分释放,以达到增加土壤肥力,促进林分生长的目的。
Abstract:
 Taking the mixed leaf litters collected from Eucalyptus urophylla and Acacia mangium plantations in Yunyong Forest Farm of Guangdong Province as materials,effects of exogenous nitrogen and phosphorus on the decomposition the leaf litters were examined by the decomposition in plastic bag method.Four treatments with different N and P levels were designed: control (no addition of N or P),N addition (N 10 g·m-2),P addition (P 5 g·m-2),and N+P addition (N 10 g·m-2+ P 5 g·m-2).The results showed that N addition inhibited the litter decomposition,whereas P and N+P additions improved the litter decomposition.Generally,the N contents in the litters of four treatments,P contents in the treatments in which P or N+P were added tended to increase and were greater than their initial value during litter decomposition process,respectively.The K content in the leaf litters of four treatments changed irregularly.The results suggested that appropriate amount of P fertilizer could be used in acidic soil regions,to promote litter decomposition and nutrient release,which would increase soil fertility and promote stand growth.

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备注/Memo

备注/Memo:
 收稿日期:2016-12-26修回日期:2017-05-21
基金项目:中央财政林业科技推广示范项目(2015-GDTK-07)。
作者简介:佘汉基,男,在读硕士,研究方向:林学。E-mail:shehanji@163.com
*通信作者:薛立,男,教授,博士,博士生导师,研究方向:森林培育、生态公益林、森林土壤、林分密度、树木抗逆生理。E-mail:forxue@scau.edu.cn
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