What Are The Controls on Aqueous N Export From Human-modified Tropical Peatlands?

对人工改造热带泥炭地的水氮出口有何控制？

• 批准号: 2748225
• 金额: --
• 依托单位: Newcastle University
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2022
• 资助国家: 英国
• 起止时间: 2022 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2748225
• 关键词: What; Controls; Aqueous; Export; Human

"Palm oil plantations in Malaysian Borneo are experiencing large but unquantified losses of aqueous Nitrogen (N) from leeching of N rich fertilisers. Leeching occurs due to poorly understood site hydrology and water catchments, leading to uninformed blanket use of fertilisers. This N pollution affects fluvial ecosystems, endangering niche fish species which support the local community.The aim of this project is to use experimental findings to create a strategy to conserve water and N by making agricultural changes across a 10,000 hectare oil palm plantation site in Sarawak, Malaysian Borneo. This will be achieved by modelling the hydrology and quantifying the aqueous nitrogen flux, thereby understanding controls on N flux at the site. Hydrology can be modelled using existing data, such as contour maps, climate data, and water table measurements, and field based measurements such as the hydraulic conductivity of the soil.The model can be used to understanding the uneven patterns of N leeching and how they relate to the catchment paths. This in turn can be used to inform plantation managers to modify and tailor the application of fertilizer to different areas of the plantation to avoid over fertilization and excessive N pollution.As a secondary aim, the model can be used to predict water availability for the oil palms and allow changes in site drainage to be implemented which could decrease carbon emissions from the damaged peatland upon which the plantation is established by reducing moisture stress at the site.

“马来西亚婆罗洲的棕榈油种植园正在经历大量但未定量的氮损失（n）因n富肥料的水eching而造成的。含水剂发生。水eeching由于所理解的地点水文和水流而引起的水eching造成的含水量是众所周知的，因此，这种污染的物种是众多的n n​​ecosystery。通过在马来西亚婆罗洲进行的10,000公顷油棕榈种植园的农业变化来创造一种保护水和n的策略。诸如土壤的液压电导率。该模型可用于理解n个水ech的不均匀模式，以及它们与集水区的相关性，又可以使用该模型来告知种植园经理，并将其定制为修改和量身定制，以避免过度的境地，以避免使用过多的境地。实施的，可以减少受损的泥炭地的碳排放，通过减少现场的水分应力来建立种植园。