当前位置：
X-MOL 学术
›
Plant Soil
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Mixed-species plantations enhance soil carbon stocks on the loess plateau of China
Plant and Soil ( IF 3.9 ) Pub Date : 2020-05-29 , DOI: 10.1007/s11104-020-04559-4 Chen Gong , Qingyue Tan , Guobin Liu , Mingxiang Xu
Plant and Soil ( IF 3.9 ) Pub Date : 2020-05-29 , DOI: 10.1007/s11104-020-04559-4 Chen Gong , Qingyue Tan , Guobin Liu , Mingxiang Xu
Background and aims Afforestation is considered one important means of mitigating climate change. However, it is still controversial whether mixed-species plantations (MP) were more conducive to the soil organic carbon (SOC) stocks than monoculture plantations (PP). Methods We conducted a meta-analysis based on 21 publications to assess the effects of different afforestation modes as well as controlling factors of SOC stocks on the Loess Plateau of China. Results Compared with monoculture plantations, mixed-species plantations could significantly increase the response size of SOC stocks by 28%. For different species combinations, tree-shrub mixtures were more conducive to increasing the SOC stocks. In climate-limited regions (MAT <8 °C, MAP <500 mm), the response size of SOC stocks of mixed-species plantations was 34% higher than that of monoculture plantations. Furthermore, significant differences were found in the response size of SOC stocks at young (< 10 yr) and mature stages (> 20 yr). Compared with abandoned land, afforestation on cropland, especially mixed-species plantations, could increase the SOC stocks by 10%. Additionally, compared with monoculture plantations, a stronger coupling relationship was observed between the soil total nitrogen (STN) and SOC stocks in mixed-species plantations. Conclusion Our results suggest that for the Loess Plateau of China, planting mixed-species plantations containing nitrogen-fixing plants is a more effective approach to enhancing the SOC stocks than monoculture plantations.
更新日期：2020-05-29
京公网安备 11010802027423号