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黄土丘陵区刺槐、辽东栎林碳氮密度及其分配特征
宋变兰1,3; 关晋宏1,3; 杜盛1,2
2016
Source Publication水土保持研究
Volume23Issue:4Pages:55-65
Abstract

选取黄土丘陵区刺槐人工林和辽东栎天然次生林2个典型森林群落为研究对象,比较分析了各组分的有机碳
和全氮含量与储量及分配特征。结果表明:刺槐和辽东栎林植被层的碳含量总体上呈现沿垂直方向的递减趋势,即
乔木层>灌木层>草本层>凋落物层;不同器官部位的碳含量呈现为:叶、干>枝>根,草本层地上部碳含量高于地
下部。氮含量变化趋势不显著。辽东栎林生态系统碳密度为165.86t/hm2,高于刺槐林生态系统(138.93t/hm2),而
两者的氮密度差异不大。两生态系统碳氮密度的各部分排序为土壤>乔木层>凋落物层>林下植被层,土壤层(0—
100cm)的碳密度占生态系统碳库总量的51.1%~53.6%,而氮密度占71.4%~84.4%,表明控制水土流失对维持研
究区的生态环境及土壤固碳潜力至关重要。

Other Abstract

We examined the contents and distribution characteristics of organic carbon and total nitrogen in a
black locust plantation and a natural oak forest in the semiarid loess hilly region.The results showed that:
carbon contents in vegetation layers declined vertically in the order:arbor layer>shrub and herb layer>litter
layer;leaf and stem>branch>root in arbor and shrub layers,whereas aboveground components>underground
components in the herb layer.The ecosystem carbon density was higher in the oak forest(165.86t/
hm2)than that of the locust plantation(138.93t/hm2).The ecosystem nitrogen density showed no significant
differences between the two communities.The distribution of carbon and nitrogen densities ranked in
the order:soil layer>arbor layer>litter layer>shrub and herb layers.The soil carbon density accounted for
51.1%~53.6%of the total ecosystem carbon density.The soil nitrogen density accounted for 71.4%~84.4%
of the total ecosystem nitrogen density.The results suggest that controlling soil and water loss is important
to maintain the ecological environment and soil carbon sequestration potential in this area.

Keyword碳氮含量 碳氮密度 刺槐 辽东栎 生态系统 黄土丘陵区
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/361005/8596
Collection水保所知识产出(1956---)
Affiliation1.中国科学院水利部水土保持研究所
2.西北农林科技大学水土保持研究所
3.中国科学院大学
First Author Affilication中国科学院水利部水土保持研究所
Recommended Citation
GB/T 7714
宋变兰,关晋宏,杜盛. 黄土丘陵区刺槐、辽东栎林碳氮密度及其分配特征[J]. 水土保持研究,2016,23(4):55-65.
APA 宋变兰,关晋宏,&杜盛.(2016).黄土丘陵区刺槐、辽东栎林碳氮密度及其分配特征.水土保持研究,23(4),55-65.
MLA 宋变兰,et al."黄土丘陵区刺槐、辽东栎林碳氮密度及其分配特征".水土保持研究 23.4(2016):55-65.
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