ISWC OpenIR  > 水保所知识产出(1956---)
黄土高原子午岭林区主要林分生态化学计量学特征
张海鑫1; 曾全超1; 安韶山2; 白雪娟1; 王宝荣1
2017
Source Publication自然资源学报
Volume32Issue:6Pages:1043-1052
Abstract

论文以黄土高原子午岭林区4 种林分(侧柏、油松、辽东栎、刺槐)的绿叶、凋落物(凋落
叶、枯枝、果实)为研究对象,分析其C、N、P含量及化学计量学特征,并计算养分再吸收率,为黄
土高原植被恢复建设及人工林合理种植规划提供理论依据。结果显示:植物叶片凋落前N、P
均发生营养转移,油松N养分再吸收率最高(44.73%),刺槐P 养分再吸收率最高(41.10%);刺
槐相比于其他3 种林分,绿叶C含量(413.94 g·kg-1)略低,且其4 个组分N含量略高于其他林分
的相应组分,绿叶、果实P含量相对较高;4 种林分的枯枝C∶N、C∶P值最大,碳蓄积功能较强;叶
片N∶P 值均小于14,表明生长旺盛期林分主要受N限制。油松、刺槐养分再吸收能力强,是黄
土高原森林区适宜植被恢复的造林树种。

Other Abstract

To analyze carbon (C), nitrogen (N), phosphorus (P) and ecological stoichiometric
characteristics in green leaf, litter, dead branch and fruit, four forest stands of different species
(Platycladus orientalis, Pinus tabuliformis, Quercus wutaishanica and Robinia pseudoacacia
L) in Ziwuling forest area on Loess Plateau were collected. The C, N, P contents and C∶N, C∶
P, N∶P ratios were measured, and the variations of them were explored in the four forest stands.
The results showed that N, P contents of plant were transferred before plant leaf withering and
falling, and the resorption efficiencies of various nutrient elements were different. In this study,
the highest resorption efficiency of N nutrient was 44.73% (Pinus tabuliformis), the highest
resorption efficiency of P nutrient was 41.10% (Robinia pseudoacacia L), respectively. In
addition, in Ziwuling forest area, the C content of green leaf under Robinia pseudoacacia L
forest was 413.94 g·kg-1, which was a little lower than that of other forest stands. However, the
N contents of green leaf, litter, dead branch and fruit under Robinia pseudoacacia L forest were
29.74, 17.10, 8.59, and 24.79 g · kg- 1, which were slightly higher than the corresponding
components of other forest stands; the P contents of green leaf and fruit under Robinia
pseudoacacia L forest were 2.43 and 2.53 g·kg- 1, which were higher than the corresponding
components of other forest stands. The carbon accumulation capacities of these four forest
stands were large. The resorption efficiencies of Pinus tabuliformis and Robinia pseudoacacia
L were greater than that of Quercus wutaishanica and Platycladus orientalis. The C∶N, C∶P
and N∶P ratios indicated that C accumulation was strong and that N, P nutrient were restricted
by its ecosystem condition. The C∶N, C∶P ratios in dead branch were higher than the ratios in
other components of the four species of plants. The N∶P ratios in green leaf of the four forest
stands were all smaller than 14, showing that carbon accumulation capacity of dead branch was
strong and the growth of the four forest stands were limited by N. This study found that Pinus
tabuliformis and Robinia pseudoacacia L were more suitable for forest vegetation restoration
on the Loess Plateau, China.

Keyword生态化学计量学 养分再吸收率 绿叶 凋落叶 枯枝 果实 子午岭
Indexed By中文核心期刊要目总览
Language中文
Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/8414
Collection水保所知识产出(1956---)
Affiliation1.西北农林科技大学资源环境学院
2.西北农林科技大学水土保持研究所
Recommended Citation
GB/T 7714
张海鑫,曾全超,安韶山,等. 黄土高原子午岭林区主要林分生态化学计量学特征[J]. 自然资源学报,2017,32(6):1043-1052.
APA 张海鑫,曾全超,安韶山,白雪娟,&王宝荣.(2017).黄土高原子午岭林区主要林分生态化学计量学特征.自然资源学报,32(6),1043-1052.
MLA 张海鑫,et al."黄土高原子午岭林区主要林分生态化学计量学特征".自然资源学报 32.6(2017):1043-1052.
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