| 黄土高原子午岭辽东栎林植物和土壤碳氮磷化学计量学特征 |
| 陆媛1; 陈云明2,3; 曹扬2,3; 宋超3
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| 2015
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发表期刊 | 水土保持学报
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卷号 | 29期号:3页码:196-201 |
摘要 | 选取黄土高原子午岭林区的幼龄林、近熟林和成熟林3个林龄阶段的辽东栎林为对象,通过测定林
内植物、枯落物和土壤的碳(C)、氮(N)、磷(P)含量,研究不同生长阶段植株、枯落物及土壤的化学计量学
特征。结果显示:林内植物各器官(叶、枝、干和根)之间C、N、P含量均存在显著性差异,分别在245.3~
492.6g/kg,1.57~20.6g/kg和0.11~1.63g/kg之间;枯落物C、N 和P含量分别在283.5~329.0
g/kg,11.5~13.2g/kg和0.73~1.06g/kg之间。在不同生长阶段,植物C含量无显著性差异;植物N和
P含量,枯落物和土壤C、N和P含量均存在显著性差异。具体表现为随着林龄的增加,植物叶片C∶N和
C∶P显著增加,N∶P先增加后减小;枯落物C∶N、C∶P和N∶P均显著增加;土壤C∶N 显著减小,
C∶P先增加后减小,N∶P无显著性差异。植物叶片和枯落物与土壤N和P含量和化学计量特征呈显著
的线性相关,说明土壤中N、P供应量影响植物体中的N、P含量。 |
其他摘要 | In this study,the contents of carbon(C),nitrogen(N)and phosphorus(P)in plants,litter and soil were
determined at three different ages in Quercus liaotungensis forests(young,near-mature and mature forest)in
Ziwuling area of Loess Plateau.The results showed that the contents of C,N and P varied in different plants organs,
which were in the range of 245.3~492.6g/kg,1.57~20.6g/kg and 0.11~1.63g/kg,respectively.The contents
of C,N and P in plant litter were in the range of 283.5~329.0g/kg,11.5~13.2g/kg and 0.73~1.06g/kg,
respectively.There was no significant difference in plant C content among Quercus liaotungensis forests at
different ages,while the contents of N and P in plants and the contents of C,N and P in litter and soil
significantly differed with forest age.With the increasing forest age,the ratios of C∶N and C∶P in plant
leaves and the ratios of C∶N,C∶P and N∶P in plant litter significantly increased,N∶P ratio in plant
leaves,as well as C∶P ratio in soil,increased at first and then decreased,C∶N ratio in soil greatly decreased and N
∶P ratio in soil did not obviously change.Positive correlations existed between plant and soil for both N and P
contents,showing that the supply of N and P in soil affected the contents of N and P in plant. |
关键词 | 土壤c、n、p
生态化学计量特征
辽东栎
子午岭
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收录类别 | 中文核心期刊要目总览
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语种 | 中文
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文献类型 | 期刊论文
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条目标识符 | sbir.nwafu.edu.cn/handle/361005/9800
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专题 | 水保所知识产出(1956---)
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作者单位 | 1.西北农林科技大学林学院 2.中国科学院水利部水土保持研究所 3.西北农林科技大学黄土高原土壤侵蚀与旱地农业国家重点实验室
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推荐引用方式 GB/T 7714 |
陆媛,陈云明,曹扬,等. 黄土高原子午岭辽东栎林植物和土壤碳氮磷化学计量学特征[J]. 水土保持学报,2015,29(3):196-201.
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APA |
陆媛,陈云明,曹扬,&宋超.(2015).黄土高原子午岭辽东栎林植物和土壤碳氮磷化学计量学特征.水土保持学报,29(3),196-201.
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MLA |
陆媛,et al."黄土高原子午岭辽东栎林植物和土壤碳氮磷化学计量学特征".水土保持学报 29.3(2015):196-201.
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文件名:
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黄土高原子午岭辽东栎林植物和土壤碳氮磷化学计量学特征_陆媛.pdf
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