2026-10-14T17:33:46Z https://www.scidb.cn/oai

10.57760/sciencedb.IGA.001d4 2026-08-31T11:24:01Z

2026-08-31 XDA28100503 - Farmland Nitrogen and Phosphorus Nutrient Dataset of Irrigation Districts in Sanjiang Plain, China (2022–2023) doi:10.57760/sciencedb.iga.001d4 en This dataset focuses on farmland ecosystems in irrigation districts of the Sanjiang Plain, China, and systematically collects monitoring data of nitrogen, phosphorus nutrients and total carbon in various water bodies during the sowing period (April), growing period (July) and mature period (September) from 2022 to 2023. The data covers Erdaohe Farm, Youyi Farm, Xingkai Lake Farm, Baoquanling Farm and surrounding farmlands in the Sanjiang Plain, involving multiple water body types including irrigation water, farmland surface water, drainage water and surface water. Specific monitoring parameters consist of Total Carbon (TC), Total Phosphorus (TP), Reactive Phosphorus (RP), Total Nitrogen (TN), Ammonia Nitrogen (NH₃-N), Nitrate and Nitrite. Basic information such as geographic coordinates (east longitude, north latitude), monitoring dates and sampling serial numbers of each sampling site is also recorded. The data precision reaches three to four decimal places, which can accurately reflect the content characteristics of nutrient elements across different crop growth stages, regions and water body types. With comprehensive coverage, this dataset provides high-quality fundamental data support for researches on farmland nutrient cycling, prevention and control of agricultural non-point source pollution, as well as water resource management in irrigation districts of the Sanjiang Plain. Sanjiang Plain irrigation dist; Farmland nitrogen and phosphor; Soil nutrient monitoring; Agricultural non-point source 王东红 PUBLIC https://creativecommons.org/licenses/by/4.0/ dataset Science Data Bank