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东亚森林、草地碳利用效率及碳通量 空间变化的影响因素分析
安 相1; 唐亚坤2,3
2017
Source Publication水土保持研究
Volume24Issue:5Pages:79-87,92
Abstract

森林和草地是陆地生态系统的重要组成部分,研究整合基于涡度相关法观测碳通量的已发表文献,共选取东
亚地区 40 个拥有 1 年以上数据的通量站(森林 26 个,草地 14 个),分析碳利用效率( CUE )以及净生态系统生产力
( NEP )、总生态系统生产力( GEP )、生态系统呼吸( RE )的空间变异特征及其影响因素。东亚地区的森林和草地为碳
汇,且森林的碳汇显著高于草地(
p <0.001 ),其 NEP 分别为 328.64±256.46gC /( m
2 · a ),
63.43±42.99gC /( m
2 · a )。森
林和草地的 CUE 分别为 0.21 , 0.20 ,影响森林 CUE 变化的因素主要是林龄,呈线性负相关关系(
p <0.001 )。影响草
地 CUE 的因素主要是年均降水量( MAP ),呈线性负相关关系(
p <0.05 )。森林和草地的 GEP , RE 均是随纬度的升
高而线性降低, NEP 与纬度呈现二次函数关系,随纬度升高而先升高后降低。森林和草地的
GEP , RE 都与 MAP 呈
线性正相关关系,且 NEP 与 MAP 呈先升高后降低的二次函数关系,其中森林和草地的饱和降水量大约为 1 300mm
和390mm 。森林的 GEP ,
RE与年均温( MAT )呈现线性正相关关系。森林和草地的 GEP ,
RE 与增强型植被指数
( EVI )呈线性正相关关系。

Other Abstract

 Forest and grassland play an essential role in the terrestrial ecosystem.The objective of this study
is to analyze the spatial variation characteristics and influence factors of carbon use efficiency ( CUE ), gross
ecosystem production ( GEP ), ecosystem respiration ( ER ), and net ecosystem production ( NEP ) based on
more than one year data which were obtained from 40sites ( 26forest sites , 14grassland sites ) in the East
Asian region from published literatures.Forest and grassland in the East Asian region both exhibit carbon
sinks , while forest showed significantly higher value than grassland ( p <0.001 ) .The average NEP in forest
and grassland in the East Asian are 328.64±256.46gC /( m
2 · a )
and 63.43±42.99gC /( m
2 · a ),
respective -
ly.The average CUE in forest and grassland are 0.21and 0.20in this region , CUE of forest is negatively
correlated with the forest age and mean annual precipitation ( MAP ), respectively.The results show that
GEP and ER in forest grassland linearly decrease with an increase in latitude.In addition , relationship
between NEP and latitude can be described by quadratic function.There is a clear linear relationship between
GEP , ER with MAP in both forest and grassland.The results also show that MAP and NEP first increase   and then decrease with a quadratic function relationship , NEP is the maximum when amounts precipitation
are 1 300mm and 390mm for forest and grassland , respectively.GEP and ER in forest show a positive
relationship with mean annual temperature.Moreover
, GEP and RE in both forest and grassland showed a
positive linear correlation with vegetation index.

Keyword森林 草地 碳利用效率 碳通量 涡度相关法
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/361005/8378
Collection水保所知识产出(1956---)
Corresponding Author唐亚坤
Affiliation1.西北农林科技大学 水土保持研究所,陕西 杨凌 712100
2.西北农林科技大学 水土保持研究所 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
3.中国科学院 水利部 水土保持研究所,陕西 杨凌 712100
Recommended Citation
GB/T 7714
安 相,唐亚坤. 东亚森林、草地碳利用效率及碳通量 空间变化的影响因素分析[J]. 水土保持研究,2017,24(5):79-87,92.
APA 安 相,&唐亚坤.(2017).东亚森林、草地碳利用效率及碳通量 空间变化的影响因素分析.水土保持研究,24(5),79-87,92.
MLA 安 相,et al."东亚森林、草地碳利用效率及碳通量 空间变化的影响因素分析".水土保持研究 24.5(2017):79-87,92.
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