Net primary and ecosystem production and carbon stocks of terrestrial ecosystems and their responses to climate change

初级生产 环境科学 陆地生态系统 碳循环 生态系统 植被(病理学) 土壤碳 气候变化 土壤水分 大气科学 生态学 土壤科学 地质学 生物 医学 病理
作者
Mingkui Cao,F. I. Woodward
出处
期刊:Global Change Biology [Wiley]
卷期号:4 (2): 185-198 被引量:302
标识
DOI:10.1046/j.1365-2486.1998.00125.x
摘要

Abstract Evaluating the role of terrestrial ecosystems in the global carbon cycle requires a detailed understanding of carbon exchange between vegetation, soil, and the atmosphere. Global climatic change may modify the net carbon balance of terrestrial ecosystems, causing feedbacks on atmospheric CO 2 and climate. We describe a model for investigating terrestrial carbon exchange and its response to climatic variation based on the processes of plant photosynthesis, carbon allocation, litter production, and soil organic carbon decomposition. The model is used to produce geographical patterns of net primary production (NPP), carbon stocks in vegetation and soils, and the seasonal variations in net ecosystem production (NEP) under both contemporary and future climates. For contemporary climate, the estimated global NPP is 57.0 Gt C y –1 , carbon stocks in vegetation and soils are 640 Gt C and 1358 Gt C, respectively, and NEP varies from –0.5 Gt C in October to 1.6 Gt C in July. For a doubled atmospheric CO 2 concentration and the corresponding climate, we predict that global NPP will rise to 69.6 Gt C y –1 , carbon stocks in vegetation and soils will increase by, respectively, 133 Gt C and 160 Gt C, and the seasonal amplitude of NEP will increase by 76%. A doubling of atmospheric CO 2 without climate change may enhance NPP by 25% and result in a substantial increase in carbon stocks in vegetation and soils. Climate change without CO 2 elevation will reduce the global NPP and soil carbon stocks, but leads to an increase in vegetation carbon because of a forest extension and NPP enhancement in the north. By combining the effects of CO 2 doubling, climate change, and the consequent redistribution of vegetation, we predict a strong enhancement in NPP and carbon stocks of terrestrial ecosystems. This study simulates the possible variation in the carbon exchange at equilibrium state. We anticipate to investigate the dynamic responses in the carbon exchange to atmospheric CO 2 elevation and climate change in the past and future.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
大幅提高文件上传限制,最高150M (2024-4-1)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
小柒发布了新的文献求助10
刚刚
1秒前
aaa142hehe完成签到 ,获得积分10
1秒前
1秒前
2秒前
2秒前
激动的猫咪完成签到,获得积分10
2秒前
江任意西发布了新的文献求助10
3秒前
3秒前
脑洞疼应助zhang@采纳,获得10
4秒前
于冷松发布了新的文献求助20
4秒前
ppg123应助忧虑的代容采纳,获得50
4秒前
5秒前
内向流沙完成签到,获得积分10
6秒前
zackcai完成签到,获得积分10
7秒前
情怀应助生动谷蓝采纳,获得10
8秒前
欣5完成签到 ,获得积分10
8秒前
8秒前
powozhi13579发布了新的文献求助10
9秒前
laissez_fairy发布了新的文献求助10
10秒前
研友_V8Qmr8发布了新的文献求助20
11秒前
zlq完成签到 ,获得积分10
11秒前
负责的花瓣应助1122采纳,获得10
12秒前
甜美的成败完成签到,获得积分10
19秒前
刘十一完成签到 ,获得积分10
22秒前
领导范儿应助柯卿彦采纳,获得10
23秒前
23秒前
科研通AI2S应助healer采纳,获得10
26秒前
27秒前
鸣蜩阿六发布了新的文献求助10
27秒前
Lucas应助ln采纳,获得10
28秒前
猫一盒完成签到,获得积分20
30秒前
Orange应助神内小大夫采纳,获得10
30秒前
猫一盒发布了新的文献求助10
32秒前
大个应助wuhan采纳,获得10
32秒前
xixi完成签到,获得积分10
34秒前
36秒前
SciGPT应助Abby采纳,获得30
36秒前
心落失发布了新的文献求助10
37秒前
huan完成签到,获得积分10
37秒前
高分求助中
The late Devonian Standard Conodont Zonation 2000
Nickel superalloy market size, share, growth, trends, and forecast 2023-2030 2000
The Lali Section: An Excellent Reference Section for Upper - Devonian in South China 1500
Smart but Scattered: The Revolutionary Executive Skills Approach to Helping Kids Reach Their Potential (第二版) 1000
Very-high-order BVD Schemes Using β-variable THINC Method 830
Mantiden: Faszinierende Lauerjäger Faszinierende Lauerjäger 800
PraxisRatgeber: Mantiden: Faszinierende Lauerjäger 800
热门求助领域 (近24小时)
化学 医学 生物 材料科学 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 基因 遗传学 催化作用 物理化学 免疫学 量子力学 细胞生物学
热门帖子
关注 科研通微信公众号,转发送积分 3248346
求助须知:如何正确求助?哪些是违规求助? 2891768
关于积分的说明 8268557
捐赠科研通 2559696
什么是DOI,文献DOI怎么找? 1388596
科研通“疑难数据库(出版商)”最低求助积分说明 650772
邀请新用户注册赠送积分活动 627744