您好,欢迎光临!
欢迎各位新老朋友发表意见和建议哈  
首页 > 热点推荐 > 详情

生物碳系列性质之八:其他

发布时间:06-08 23:13 来源: 作者: 阅读:3188 网友评论0

介绍了生物碳的施用量和流失情况,以及实验时注意事项

biochar application rates 或者 biochar loading capacity
In addition to crop yields, research should also focus on biochar loading capacity of different soils for different climatic conditions without adverse consequences to soil physical properties, such as priming by increasing the pH or decreasing water-filled pore space, hydrophobic effects, or soil chemical properties, e.g. adding a high ash content (with salts) biochar to a soil already at risk of salinisation, or other ecosystem components, e.g. particulate or dissolved organic C reaching ground/surface waters. Therefore, the biochar loading capacity should vary according to environmental conditions as well as biochar ‘quality’, specific to the environmental conditions of the site (soil, geomorphology, hydrology, vegetation).
High biochar application rates of >67 t ha-1 (produced from poultry litter) were shown to have a negative effect on earthworm survival rates, possibly due to increases in pH or salt levels.

biochar loss and mobility
An effective evaluation of long-term stability and mobility of biochar, including the way is paramount to understanding the contribution that biochar can make to improving soil function, and as a tool for sequestering carbon.
Physical and chemical weathering of biochar over time has implications for its solubilisation, leaching, translocation through the soil profile and into water systems, as well as interactions with other soil components (including contaminants). The contribution of soil management practices and the effects of increasingly warmer climates, together with potential greater erosivity as potential key mechanisms controlling biochar fate in soil, have also been assessed insufficiently.

实验方法method
A sound understanding of the contribution that biochar can make as a tool to improve soil properties, processes and functioning, or at least avoiding negative effects, largely relies on knowing the extent and full implications of the biochar interactions and changes over time within the soil system. It is scarce, partly due to the limited amount of long-term studies, and partly due to the lack of standardised methods for simulating biochar aging and long-term environmental monitoring.
Policy should first be designed with the aim to invest in fundamental scientific research in biochar application to soil. The use of representative pilot areas, in different soil ecoregions, involving biochars produced from a representative range of feedstocks is vital. Once positive effects on soil have been established robustly for certain biochars at a specific site (set of environmental conditions), a tiered approach can be imagined where these combinations of biochar and specific site conditions are considered for implementation first. A second tier would then consist of other biochars (from different feedstock and/or pyrolysis conditions) for which more research is required before site-specific application is considered.
关于“生物碳系列性质之八:其他”评论
用户名:  密码: 自动登录  注册

网友评论仅供其表达个人看法,并不表明生物碳网同意其观点或证实其描述。