Nooksack River Basin N budget

Information used to construct a nitrogen budget for the Nooksack River Watershed. The data includes the following four tables: Table 1: Annual N Fluxes in the Nooksack River Watershed. Table 2: Calculated annual fish body mass (kg) in the Nooksack River Watershed. Table 3: Mean total nitrogen deposition (kg) of different land uses in the watershed, US portion and Canadian portion. Table 4: US portion of the Nooksack River Watershed: crop types, area, annual harvest N, available soil N, annual recommended crop N uptake rates, and proportional contributions of manure and synthetic fertilizer N, respectively.

本数据集用于构建努克萨克河流域（Nooksack River Watershed）的氮收支体系，共包含以下四张数据表：
表1：努克萨克河流域年度氮通量
表2：努克萨克河流域经测算得到的年度鱼类体质量（千克）
表3：流域内不同土地利用类型、美国境内部分与加拿大境内部分的总氮平均沉降量（千克）
表4：努克萨克河流域美国境内部分：作物类型、种植面积、年度收获氮素、土壤有效氮、年度推荐作物氮素吸收速率，以及粪肥与合成氮肥的氮素占比