Evaluating topsoil requirements in OSE pad reclamation and the use of biochar as a soil amendment

评估 OSE 垫复垦中的表土要求以及使用生物炭作为土壤改良剂

• 批准号: 531277-2018
• 负责人: MacKenzie, Michael
• 金额: $ 1.82万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=658309
• 关键词: Evaluating; topsoil; requirements; OSE; pad

Resource extraction in Alberta, Canada requires operators to reclaim land to equivalent land capability. For oil**sands well sites established after 1994, a minimum of 80% of pre-disturbance topsoil depth is required during**reclamation. Often suitable topsoil is in short supply due to loss or decomposition during stockpiling and it can**be a challenge to achieve this 80% target. In other parts of the world, studies have shown that reclamation of**arid and shrubby ecosystems can be successful with reduced topsoil depth, but more data is needed to develop**strategies to compensate for material shortages. A potential solution to shortages might be to build soils with**amendments like biochar, compost and peat. Biochar has recently been reported to optimize soil function in**both greenhouse and field studies . At their Cold Lake Operations, Imperial Oil initiated a replicated**experiment in 2015 to determine if shallow topsoil placement alone or with organic matter rich soil**amendments (peat and biochar) will produce suitable soil conditions for sustainable reclamation. This project**will provide an answer to whether or not less topsoil and organic matter amendments can perform as well as**the current required standard of 80% topsoil depth.

加拿大阿尔伯塔省的资源开采要求作业者开垦土地以达到同等的土地能力。对于1994年以后建立的油砂井场，在复垦期间至少需要扰动前表土深度的80%。由于在储存过程中流失或分解，通常合适的表土供应不足，要达到80%的目标可能是一个挑战。在世界其他地区，研究表明，在表层土壤深度减少的情况下，干旱和灌木生态系统的复垦可以取得成功，但需要更多的数据来制定补偿材料短缺的策略。一个潜在的解决短缺的办法可能是在土壤中加入生物炭、堆肥和泥炭等改良剂。最近有报道称，生物炭在温室和田间研究中都能优化土壤功能。在他们的冷湖作业中，帝国石油公司于2015年启动了一项重复实验，以确定浅层表土单独放置或富含有机质的土壤改良剂（泥炭和生物炭）是否能产生适合可持续开垦的土壤条件。该项目**将提供一个答案，即较少的表土和有机质改良剂是否可以达到**目前要求的80%表土深度标准。