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黄土丘陵沟壑区森林生态系统生态化学计量特征
赵一娉1; 曹扬2,3; 陈云明2,3; 彭守璋2,3
2017
Source Publication生态学报
Volume37Issue:16Pages:5451-5460
Abstract

为了阐明黄土丘陵沟壑区森林生态系统植物与土壤之间的养分循环关系,明确叶片与乔木层整体生态化学计量特征差异
性,采用野外调查与室内分析相结合的方法对研究区内主要森林生态系统不同乔木器官和土壤C、N、P 含量进行了测定,分析
了叶片、乔木层和土壤化学计量特征及之间的关系。结果表明: 研究区内森林生态系统乔木层平均C、N、P 含量均显著低于叶
片水平,表层土壤( 0—10 cm) C、N 含量以及C ∶P、N ∶P 值均显著高于土壤( 0—100 cm) 平均值; 叶片与乔木层及二者与土壤间
的生态化学计量特征关系不同; 乔木层平均C 含量与降水呈显著正相关,乔木层平均P 含量仅与海拔呈显著正相关,影响本地
区植物生长状态的主要因素是降水。土壤平均C、N 含量仅受土壤容重的影响,土壤平均P 含量主要受土壤容重、温度和降水
的影响。研究结果可以为黄土丘陵沟壑区人工林的建设和管理提供理论依据。

Other Abstract

To understand nutrient cycling and relationships between the soil and plants in forest ecosystems in the hilly-gully
area of the Loess Plateau,combined field investigations and laboratory analyses were performed to study the ecological
stoichiometry characteristics of trees and soil,and their relationships. The results showed that the carbon ( C) ,nitrogen
( N) ,and phosphorus ( P) contents of leaves were significantly higher than that of trees,and the contents of the surface
soil ( 0—10 cm) were higher than that in the soil layers ( 0—100 cm) . The relationship between the trees and soil,and
between leaf and soil were inconsistent. In the tree layer,C was positively correlated with precipitation,and P was
positively correlated with elevation. Therefore,the main factor affecting plant growth was precipitation. In the soil,C,N
only affected by soil bulk density,and P has correlations with soil bulk density,temperature and precipitation. These results
provide a theoretical basis for the development and management of plantations in the hilly-gully area of the Loess Plateau.

Keyword人工林 自然林 乔木层 土壤 化学计量
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/361005/8502
Collection水保所知识产出(1956---)
Affiliation1.西北农林科技大学林学院
2.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
3.中国科学院水利部水土保持研究所
Recommended Citation
GB/T 7714
赵一娉,曹扬,陈云明,等. 黄土丘陵沟壑区森林生态系统生态化学计量特征[J]. 生态学报,2017,37(16):5451-5460.
APA 赵一娉,曹扬,陈云明,&彭守璋.(2017).黄土丘陵沟壑区森林生态系统生态化学计量特征.生态学报,37(16),5451-5460.
MLA 赵一娉,et al."黄土丘陵沟壑区森林生态系统生态化学计量特征".生态学报 37.16(2017):5451-5460.
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