Soil macronutrient cycles beneath our feet: predicting how soil carbon and nitrogen manipulation regulates phosphorus cycling for environmental benefi

我们脚下的土壤常量养分循环：预测土壤碳和氮的操纵如何调节磷循环以实现环境效益

• 批准号: 1946135
• 金额: --
• 依托单位: Lancaster University
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2017
• 资助国家: 英国
• 起止时间: 2017 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-1946135
• 关键词: Soil; macronutrient; cycles; beneath; our

Managing soil phosphorus is a major global issue, both with requirements for maximising P uptake into crops (ie minimising fertiliser resource input needs) and for reducing losses to waters. Both issues are united by controls of P turnover in soils, in turn influenced by coupled C, N and P cycles. These are often studied spatially, but without understanding temporally how we can manipulate these interacting cycles over time through management. Tackling this truly requires integrated biogeochemical knowledge and problem solving, necessitating training scientists capable of upscaling combined knowledge of soil, chemistry, biology and landscape processes into management advice. Recent BBSRC-funded work from the supervisors has shown controls of soil sorption, C and P status properties on soil solid-phase P forms and availability, spatially. The PhD research training opportunity here is to answer how these soil C, N, P processes can be beneficially manipulated to improve P efficiencies with respect to greater P availability and uptake of crop available P forms, yet minimising these forms from leaching.Microbial C, N and P cycling (and timescales of response to change) differ across soil types. The impacts of changing cycles on soil-solution P speciation couples P research needs with important agronomic management and societal goals of improving soil quality (e.g. increasing organic matter status of farmed soils). This studentship provides a training platform for the student to develop new knowledge, then a conceptual model leading to predictive ability, using manipulations and soil sensors, to understand timescales of improved soil P functions associated with microbial and soil organic matter quality changes. Specifically the PhD training will address the challenges of upscaling soil observations (including novel in-situ sensor data) to improve spatio-temporal prediction.

管理土壤磷是一个主要的全球问题，既需要最大限度地吸收农作物（即最大程度地减少肥料资源输入需求）以及减少水域损失的要求。这两个问题都是由土壤中P离职控制的控制，进而由C耦合C，N和P周期影响的。这些通常是在空间上进行的，但是在不临时的情况下，我们如何通过管理过程随着时间的推移来操纵这些相互作用的周期。解决这个问题确实需要综合的生物地球化学知识和解决问题，需要培训科学家能够将土壤，化学，生物学和景观过程的合并知识融合到管理建议中。 BBSRC的最新资助的主管工作显示了土壤固相P形式和可用性的土壤吸附，C和P状态特性的控制。这里的博士研究培训机会是回答如何对这些土壤C，N，P过程进行有益操作，以提高P效率，以提高P效率，以提高P效率，并吸收可用的P形式，而最小化这些形式的浸出形式。Microbialc，n和p循环（以及对土壤类型的响应的时间范围）。改变循环对土壤解决方案P物种形成伴侣的影响P研究需求具有重要的农艺管理和改善土壤质量的社会目标（例如，养殖土壤的有机物状况提高）。该学生为学生提供了一个培训平台，以发展新知识，然后使用操纵和土壤传感器来理解改善土壤P功能与微生物和土壤有机物质量变化相关的概念模型，以了解改善土壤P功能的时间表。具体来说，博士学位训练将解决升级土壤观测值（包括新型的原位传感器数据）的挑战，以改善时空预测。