Agroforestry systems: Meta-analysis of soil carbon stocks, sequestration processes, and future potentials
Shi, Lingling1,2,3; Feng, Wenting4; Xu, Jianchu1,2; Kuzyakov, Yakov3,5,6
2018-11-01
发表期刊LAND DEGRADATION & DEVELOPMENT
ISSN1085-3278
卷号29期号:11页码:3886-3897
摘要Agroforestry (AF) has the potential to restore degraded lands, provide a broader range of ecosystem goods and services such as carbon (C) sequestration and high biodiversity, and increase soil fertility and ecosystem stability through additional C input from trees, erosion prevention, and microclimate improvement. Advantages and processes for global C sequestration in AF are unknown. We used a meta-analysis of 427 soil C stock data pairs grouped into four main AF systems-alley cropping, windbreaks, silvopastures, and homegardens-and evaluated changes in AF and adjacent control cropland or pasture. Mean soil C stocks in AF (1-m depth) were 126 Mg C center dot ha(-1), which is 19% more than that in cropland or pasture. The highest C stocks in soil were in subtropical homegardens, AF with younger trees, and topsoil (0-20 cm). Increased soil C stocks in AF were lower than aboveground C stocks in most AF systems, except alley cropping. Homegardens stored the highest C in both aboveground and belowground, especially in the subsoil (20-100 cm). Advantages of AF ecosystem services focusing on mechanisms of belowground C sequestration were analyzed. AF could store 5.3 x 10(9) Mg additional C in soil on 944 Mha globally, with most in the tropics and subtropics. AF systems could greatly contribute to global soil C sequestration if used in larger areas. Future investigations of AF should include (a) mechanistic- and process-based studies (instead of common monitoring and inventories), (b) models linking forest and crop growth with soil water and C and nutrient cycling, and (c) accurate assessments of the AF area worldwide based on the remote sensing approaches.
关键词agroforestry management carbon sequestration ecosystem services homegardens meta-analysis sustainable land use
资助信息Sino-German (CSC-DAAD) Postdoc Scholarship Program; Ministry of Sciences and Technology of China
收录类别SCI
语种英语
资助项目Sino-German (CSC-DAAD) Postdoc Scholarship Program ; Ministry of Sciences and Technology of China[2017YFC0505100]
文献类型期刊论文
条目标识符http://ir.kib.ac.cn/handle/151853/63180
专题中国科学院东亚植物多样性与生物地理学重点实验室
通讯作者Kuzyakov, Yakov
作者单位1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Divers & Biogeog East Asia, Kunming 650201, Yunnan, Peoples R China
2.World Agroforestry Ctr, East & Cent Asia, Kunming 650201, Yunnan, Peoples R China
3.Univ Gottingen, Dept Soil Sci Temperate Ecosyst, Dept Agr Soil Sci, D-37707 Gottingen, Germany
4.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Natl Engn Lab Improving Qual Arable Land, Beijing 100081, Peoples R China
5.Kazan Fed Univ, Inst Environm Sci, Kazan 420049, Russia
6.Soil Sci Consulting, D-37077 Gottingen, Germany
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GB/T 7714
Shi, Lingling,Feng, Wenting,Xu, Jianchu,et al. Agroforestry systems: Meta-analysis of soil carbon stocks, sequestration processes, and future potentials[J]. LAND DEGRADATION & DEVELOPMENT,2018,29(11):3886-3897.
APA Shi, Lingling,Feng, Wenting,Xu, Jianchu,&Kuzyakov, Yakov.(2018).Agroforestry systems: Meta-analysis of soil carbon stocks, sequestration processes, and future potentials.LAND DEGRADATION & DEVELOPMENT,29(11),3886-3897.
MLA Shi, Lingling,et al."Agroforestry systems: Meta-analysis of soil carbon stocks, sequestration processes, and future potentials".LAND DEGRADATION & DEVELOPMENT 29.11(2018):3886-3897.
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