Agroforestry systems: Meta-analysis of soil carbon stocks, sequestration processes, and future potentials | |
Shi, Lingling1,2,3; Feng, Wenting4; Xu, Jianchu1,2![]() | |
刊名 | LAND DEGRADATION & DEVELOPMENT
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2018-11-01 | |
卷号 | 29期号:11页码:3886-3897 |
关键词 | Agroforestry Management Carbon Sequestration Ecosystem Services Homegardens Meta-analysis Sustainable Land Use |
ISSN号 | 1085-3278 |
英文摘要 | 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. |
资助项目 | Sino-German (CSC-DAAD) Postdoc Scholarship Program ; Ministry of Sciences and Technology of China[2017YFC0505100] |
资助机构 | Sino-German (CSC-DAAD) Postdoc Scholarship Program ; Ministry of Sciences and Technology of China |
内容类型 | 期刊论文 |
源URL | [http://ir.kib.ac.cn/handle/151853/63179] ![]() |
专题 | 昆明植物研究所_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 |
推荐引用方式 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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