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评估最佳管理实践和大气二氧化碳度上升对水产产量的流域规模影响

Xiaoyu Kang¹, Junyu Qi², Charles P-A Bourque³

¹Faculty of Forestry and Environmental Management, University of New Brunswick, P.O. Box 4400, 28 Dineen Drive, Fredericton, NB E3B 5A3, Canada.

The Science of the total environment

|March 21, 2024

概括

流量转移露台 (FDTs) 在农业流域的水产量显著减少了28.9%. 大气中二氧化碳度升高稍微增加了河流排放,影响了供水评估.

科学领域:

水文学的水文学
环境科学环境科学
农业科学农业科学

背景情况:

水产受气候,土地管理和土地覆盖的影响,减少水产可能会对全球供水构成威胁.
相互关联的因素使单个对流动动力学影响的隔离变得复杂.
综合的水文模型往往没有包括所有相关的影响因素.

研究的目的:

评估大气二氧化碳度升高和流量转移露台 (FDTs) 对流域规模流水排放的影响.
使用一种新的分析方法,解开二氧化碳和FDTs对水产的微妙影响.
为了更准确地了解影响农业流域水资源的因素.

主要方法:

利用全面的水文模型来考虑主要的气候和土地使用/土地覆盖因素.
采用统计方法来分解模型预测残余.
分析了从1992年到2014年在农业主导的流域中获得的水产量.

主要成果:

从1992年到2014年,流量转移露台 (FDTs) 导致净水产减少188.0毫米 (28.9%).
大气中二氧化碳度的增加,通过减少口腔电导率,导致流排放量略有增加 (0.45毫米/年,总体1.6%).
由于二氧化碳丰富和FDT的协同效应,区域变暖对流量减少的影响可能被高估.

结论:

在农业水域,FDT是减少水产量的重要驱动力.
升高的二氧化碳对水产的影响是复杂的,部分抵消了由变暖引起的减少.
精确的水资源管理需要考虑土地管理实践和大气变化的相互作用.

关键词:

环境中的CO2度.流量转移露台流量转移露台剩余的剩余的剩余的胃管导电性胃管导电性胃管导电性水域流域水域流域

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