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黄土高原不同人工林叶片-凋落叶-土壤 生态化学计量特征
白雪娟1; 曾全超1; 安韶山1,2; 张海鑫1; 王宝荣1
Source Publication应用生态学报

为探究“退耕还林( 牧) ”工程对陕西省子午岭林区的影响,分析3 种典型的人工林
( 刺槐林、油松林和侧柏林) 叶片-凋落叶-土壤的C、N、P 含量及其生态化学计量特征.结果表
明: 3 种人工林不同组分中C、N、P 含量大小均为叶片>凋落叶>土壤,刺槐林叶片N、P 含量
显著高于油松林和侧柏林.刺槐林、油松林和侧柏林叶片N ∶ P 分别为12.2、5.4 和6.1,油松和
侧柏较刺槐林存在N 亏损,C ∶ N 和C ∶ P 大小均为凋落叶>叶片>土壤,N ∶ P 为叶片>凋落叶
>土壤.油松林叶片C ∶ N 与凋落叶C ∶ N 间存在显著正相关关系.刺槐叶片在生长周期内吸收
利用的N 和P 存在比例关系,且其凋落叶在元素再吸收后N 和P 的残留量也存在比例关系.

Other Abstract

In order to research into the influence of Grain to Green Project in Ziwuling forest region,
this paper took three typical plantations which were Robinia pseudoacacia plantation,Pinus
tabuliformis plantation,and Platycladus orientalis plantation in the Ziwuling forest region of Shaanxi
Province as research objects and analyzed the carbon,nitrogen and phosphorus contents of leaf,litter
and soil among the three plantations. The results showed that the contents of C,N and P in the
three plantations were in order of leaf > litter > soil,the contents of N and P in leaf of R. pseudoacacia
plantation were significantly higher than that of P. tabuliformis plantation and P. orientalis.
Leaf N: P was 12.21,5.36 and 6.09 in R. pseudoacacia plantation,P. tabuliformis plantation and
P. orientalis plantation,respectively. It was indicated that the three species were all subject to N deficiency.
C: N and C: P showed the trend of litter > leaf > soil,and N: P demonstrated the trend of
leaf > litter > soil. There were highly significant positive relationships in C: N between leaf and litter
in P. tabuliformis plantation. N and P in the leaf development process of R. pseu-doacacia plantation
were proportionally absorbed,and proportionally remained in the litter after N and P resorption. R.
pseudoacacia was the better plantation species than P. tabuliformis and P. orientalis in the south forest
zone on the Loess Plateau.

Keyword黄土高原 叶片 凋落叶 土壤 生态化学计量学
Indexed By中文核心期刊要目总览
Document Type期刊论文
Recommended Citation
GB/T 7714
白雪娟,曾全超,安韶山,等. 黄土高原不同人工林叶片-凋落叶-土壤 生态化学计量特征[J]. 应用生态学报,2016,27(12):3823-3830.
APA 白雪娟,曾全超,安韶山,张海鑫,&王宝荣.(2016).黄土高原不同人工林叶片-凋落叶-土壤 生态化学计量特征.应用生态学报,27(12),3823-3830.
MLA 白雪娟,et al."黄土高原不同人工林叶片-凋落叶-土壤 生态化学计量特征".应用生态学报 27.12(2016):3823-3830.
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