黄土丘陵沟壑区刺槐混交林生态化学计量特征与碳储量

焦秋燕; 黄林嘉; 张娟娟; 张旭; 黄宁; 郭珍; 曹扬

doi:10.13870/j.cnki.stbcxb.2022.02.030

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黄土丘陵沟壑区刺槐混交林生态化学计量特征与碳储量

更新时间：2024-11-07

- 黄土丘陵沟壑区刺槐混交林生态化学计量特征与碳储量
- Ecological Stoichiometry and Carbon Storage of
- 水土保持学报 2022年36卷第2期页码：238-246
- 作者机构：
  
  1. 中国科学院水利部水土保持研究所, 陕西杨凌,712100
  2. 中国科学院大学,北京,100049
  3. 西北农林科技大学林学院, 陕西杨凌,712100
  4. 北川羌族自治县水土保持服务中心, 四川北川羌族自治县,622750
  5. 四川华标测检测技术有限公司,成都,610066
  6. 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, 陕西杨凌,712100
- 作者简介：
  
  [ "焦秋燕(1997-),女,在读硕士研究生,主要从事流域生态研究。E-mail:jiaoqiuyan19@mails.ucas.ac.cn" ]
- 基金信息：
  
  黄土丘陵区刺槐沙棘混交林种间养分协调机制研究（41977418）
- DOI：10.13870/j.cnki.stbcxb.2022.02.030
  中图分类号： S714.5
- 纸质出版：2022
- 稿件说明：
移动端阅览
焦秋燕, 黄林嘉, 张娟娟, 等. 黄土丘陵沟壑区刺槐混交林生态化学计量特征与碳储量[J]. 水土保持学报, 2022,36(2):238-246.

JIAO Qiuyan, HUANG Linjia, ZHANG Juanjuan, et al. Ecological Stoichiometry and Carbon Storage of[J]. 2022, 36(2): 238-246.
焦秋燕, 黄林嘉, 张娟娟, 等. 黄土丘陵沟壑区刺槐混交林生态化学计量特征与碳储量[J]. 水土保持学报, 2022,36(2):238-246. DOI： 10.13870/j.cnki.stbcxb.2022.02.030.

JIAO Qiuyan, HUANG Linjia, ZHANG Juanjuan, et al. Ecological Stoichiometry and Carbon Storage of[J]. 2022, 36(2): 238-246. DOI： 10.13870/j.cnki.stbcxb.2022.02.030.

摘要

为了探讨混交林与纯林养分状况和固碳能力的差异

以黄土丘陵沟壑区刺槐(Robinia pseudoacacia)纯林、油松(Pinus tabuliformis)纯林以及刺槐+油松(Robinia pseudoacacia+Pinus tabuliformis)混交林、刺槐+山杨(Robinia pseudoacacia+Populus davidiana)混交林为对象

通过野外调查和室内分析相结合的方式

研究混交林与纯林生态系统的生态化学计量特征与碳储量。结果表明:(1)刺槐+油松混交林显著增加刺槐枝和根的C含量和叶、干的P含量及枝的C:P与N:P

并显著增加油松叶、枝和根的N含量和枝、干、根的N:P

但显著降低油松各器官的C:N

而刺槐+山杨混交林仅显著增加刺槐枝的P含量。(2)刺槐+油松混交林的土壤C含量显著高于刺槐纯林

土壤P含量显著低于油松纯林;刺槐+山杨混交林与刺槐纯林土壤P含量差异不显著。(3)总体纯林中乔木叶片与凋落物的C含量显著相关

C:N、C:P在乔叶-凋落物-土壤中均显著相关;但在总体混交林中仅有凋落物与土壤中的P含量与C:P显著相关。(4)刺槐+山杨混交林乔木层碳储量显著高于刺槐纯林

刺槐+油松混交林林下植被层与土壤层碳储量显著高于刺槐纯林。研究结果为深入了解黄土高原养分循环机制奠定基础

同时也为黄土高原人工林的经营管理提供理论依据。

Abstract

To investigate the differences of nutrient status and carbon (C) sequestration capacity between mixed forests and pure forests

the pure forests of Robinia pseudoacacia

pure forests of Pinus tabuliformis

mixed forests of Robinia pseudoacacia and Pinus tabuliformis

and mixed forests of Robinia pseudoacacia and Populus davidiana

located in Loess Hilly and gully region of China

were taken as the objects. Through the field investigation and indoor analysis

the ecological stoichiometry and C storage of the pure and mixed forests ecosystems were studied. The results showed that:(1) Compared with the pure forests

the mixed forests of Robinia pseudoacacia and Pinus tabuliformis significantly increased the C contents of branches and roots

the phosphorus (P) contents of leaves and trunks

the C:P and N:P ratio of branches of Robinia pseudoacacia species

and also significantly increased the nitrogen (N) contents of leaves

branches and roots and the N:P ratio of branches

trunks and roots of Pinus tabuliformis species

but significantly decreased the C:N ratio of all organs of Pinus tabuliformis species

while the mixed forests of Robinia pseudoacacia and Populus davidiana only significantly increased the P content of branches of Robinia pseudoacacia. (2) The content of soil C in the mixed forests of Robinia pseudoacacia and Pinus tabuliformis was significantly higher than that of the pure Robinia pseudoacacia forests

and the content of soil P was significantly lower than that of the pure Pinus tabuliformis forests. The differences of P in the soils between the mixed forests of Robinia pseudoacacia and Populus davidiana and the pure forests of Robinia pseudoacacia were not significant. (3) There was a significant correlation between the leaf and litter C contents in two pure forests. And the C:N

C:P ratios of the total pure forests were significantly correlated between tree leaf-litter-soil; but in total mixed forests

only P contents in litter and soil were significantly correlated with C:P ratio. (4) The C storage in tree layer of mixed forests of Robinia pseudoacacia and Populus davidiana was significantly higher than that of the pure Robinia pseudoacacia forests

and the C storage in understory vegetation layer and soil layer of mixed forests of Robinia pseudoacacia and Pinus tabuliformis was significantly higher than those in the pure Robinia pseudoacacia forests. This study could not only lay a foundation for an in-depth understanding of the nutrient cycle mechanism in the Loess Plateau

but also provide a theoretical basis for the management of plantation in the Loess Plateau.

关键词

Keywords

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