淡水养殖和海水养殖的氮收支在一个大型热带岛屿-以海南岛为例 1998-2018 年。
Nitrogen budgets for freshwater aquaculture and mariculture in a large tropical island - A case study for Hainan Island 1998-2018.
机构信息
State Key Laboratory of Marine Resources Utilization in South China Sea, Hainan University, Haikou, 570228, China; Center for Eco-Environment Restoration of Hainan Province & Key Laboratory of A&F Environmental Processes and Ecological Regulation of Hainan Province, College of Environment and Ecology, Hainan University, Haikou, 570228, China; College of Tropical Crops, Hainan University, Haikou, 570228, China.
State Key Laboratory of Marine Resources Utilization in South China Sea, Hainan University, Haikou, 570228, China; Center for Eco-Environment Restoration of Hainan Province & Key Laboratory of A&F Environmental Processes and Ecological Regulation of Hainan Province, College of Environment and Ecology, Hainan University, Haikou, 570228, China; Water Systems and Global Change Group, Wageningen University, Droevendaalsesteeg 3, Wageningen, 6708, PB, the Netherlands.
出版信息
Mar Environ Res. 2022 May;177:105642. doi: 10.1016/j.marenvres.2022.105642. Epub 2022 May 5.
Nitrogen is an essential nutrient in aquaculture. It is also an important factor in coastal and river eutrophication. We present an island-scale model to study the nitrogen flows in different aquaculture systems in Hainan Island during 1998-2018. The result indicated that nitrogen losses associated with pond sludge, wastewater discharge and gaseous emission increased by a factor of 1.4, 4.6 and 3.2, respectively. Sludge and wastewater account for 84% of the total losses to the environment. During the past 20 years, aquacultural yields and the nitrogen use efficiency (NUE) improved considerably in Hainan Island. Nevertheless, nitrogen losses to the environment increased significantly as well, with negative effects for local ecosystems. In the future, sustainable aquacultural practices are needed to improve NUE and to reduce nitrogen losses to the environment.
氮是水产养殖中的一种必需养分。它也是沿海和河流富营养化的一个重要因素。我们提出了一个岛屿尺度的模型来研究 1998-2018 年海南岛不同水产养殖系统中的氮流动。结果表明，与池塘淤泥、废水排放和气体排放相关的氮损失分别增加了 1.4 倍、4.6 倍和 3.2 倍。淤泥和废水占环境总损失的 84%。在过去的 20 年里，海南岛的水产养殖产量和氮利用效率（NUE）有了显著提高。然而，氮向环境的损失也显著增加，对当地生态系统产生了负面影响。未来需要可持续的水产养殖实践来提高 NUE 并减少氮向环境的损失。
Zotero 插件