干旱区荒漠植物初级生产力及碳储量与功能性状之间的关系

张磊; 吕光辉; 蒋腊梅; 李周康; 张仰

doi:10.13568/j.cnki.651094.651316.2019.03.08.0004

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干旱区荒漠植物初级生产力及碳储量与功能性状之间的关系

更新时间：2026-01-19

- 干旱区荒漠植物初级生产力及碳储量与功能性状之间的关系
- Journal of Xinjiang University (Natural Science Edition in Chinese and English) Vol. 37, Issue 1, Pages: 63-74(2020)
- 作者机构：
  
  1. 新疆大学资源与环境科学学院
  2. 绿洲生态教育部重点实验室
  3. 新疆大学干旱生态环境研究所
- 作者简介：
- 基金信息：
- DOI：10.13568/j.cnki.651094.651316.2019.03.08.0004
  CLC： Q948
- Published：2020
- 稿件说明：
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[1]张磊,吕光辉,蒋腊梅,等.干旱区荒漠植物初级生产力及碳储量与功能性状之间的关系[J].新疆大学学报(自然科学版)(中英文),2020,37(01):63-74.
[1]张磊,吕光辉,蒋腊梅,等.干旱区荒漠植物初级生产力及碳储量与功能性状之间的关系[J].新疆大学学报(自然科学版)(中英文),2020,37(01):63-74. DOI： 10.13568/j.cnki.651094.651316.2019.03.08.0004.

DOI：10.13568/j.cnki.651094.651316.2019.03.08.0004.

摘要

植物功能性状是能够将植物个体特征、群落结构和生态系统功能结合起来的良好载体.本文以艾比湖荒漠植物为研究对象

分析了不同生活型植物功能性状、初级生产力、碳储量的差异以及植物群落水平初级生产力及碳储量与功能性状之间的关系.结果表明:(1)不同生活型植物功能性状存在差异(P<0.05).多年生草本的比叶面积、叶片干物质含量、叶片碳含量均大于一年生草本和灌木;灌木的叶片氮磷比显著大于草本

且具有最小的叶片磷含量;草本和灌木在叶片碳氮比上没有显著差异;(2)不同生活型荒漠植物地上固碳量大小依次为:多年生草本(9.08±1.55g·-2)>灌木(5.66±0.81 g·-2)>一年生草本(3.16±0.28 g·-2);地下固碳量大小依次为:灌木(14.72±3.94g·-2)>多年生草本(8.54±1.33 g·-2)>一年生草本(1.33±0.10 g·m-2).其中

根系所占植物总固碳比重依次是:灌木(72.2%)>多年生草本(48.5%)>一年生草本(29.6%);(3)在群落水平上

叶片碳氮比、氮磷比分别与比叶面积、植株高度显著相关(P<0.05);(4)通过RDA分析以及蒙特卡洛检验结果表明:冠幅面积、植株高度、叶片氮含量、叶片氮磷比对荒漠植物初级生产力及碳储量具有显著的正效应(P<0.01)

叶片碳氮比对荒漠植物初级生产力及碳储量具有负驱动力(P<0.05).以上结果说明

干旱区不同生活型植物在权衡功能性状和碳储量方面存在不同的适应策略

荒漠植物功能性状对植被固碳能力有良好的指示作用.

Abstract

Plant functional traits are good carriers that combine plant individual characteristics

community structure and ecosystem functions. This paper analyzed the differences in functional traits

primary productivity and carbon storage of different living plants and the relationship between primary productivity

carbon storage and functional traits of plant communities by using the Ebi Lake desert plants as research objects. The results showed that:(1)There were differences in functional traits between different life forms(P <0.05). The speci?c leaf area

leaf dry matter content and leaf carbon content of perennial grass were greater than annual grass and shrub; The leaf N:P ratio of shrubs was signi?cantly greater than grass

and had the smallest leaf phosphorus content. There was no signi?cant difference in leaf C:N ratio between grass and shrubs.(2)The amount of carbon storage on the ground of different life-type desert plants was as follows: perennial grass(9.08 ± 1.55 g·-2) > shrub(5.66 ± 0.81 g·-2) >annual grass(3.16 ± 0.28 g·-2); The amount of underground was: shrub(14.72 ± 3.94 g·-2) >perennial grass(8.54 ± 1.33 g·-2) > annual grass(1.33 ± 0.10 g·-2). Among them

the total carbon storage of the roots of the plants was: shrub(72.2 %)>perennial herb(48.5 %)>annual herb(29.6 %).(3)At the community level

the ratio of C:N and N:P in leaves were signi?cantly correlated with leaf area and plant height(P <0.05).(4)The results of RDA analysis and Monte Carlo test showed that crown area

plant height

leaf nitrogen content and leaf N:P ratio had signi?cant positive effects on desert plant primary productivity and carbon storage(P <0.01). The leaf C:N ratio had a negative driving force for the primary productivity and carbon storage of desert plants(P <0.05).The above results indicate that different living plants in the arid area have different adaptation strategies in terms of weighing functional traits and carbon storage. The functional traits of desert plants are a good indicator of the carbon storage capacity of vegetation.

关键词

Keywords

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