气候变化领域集成服务门户(CCPortal): Trajectories Nutrient Dataset for Nitrogen (TREND-nitrogen)

CCPortal

DOI	https://doi.pangaea.de/10.1594/PANGAEA.917583
	Trajectories Nutrient Dataset for Nitrogen (TREND-nitrogen)
	Byrnes; Danyka K; Van Meter; Kimberly J; Basu; Nandita B
发布日期	2020-05-19
数据集类型	dataset
英文关键词	Agriculture ; atmospheric deposition ; biological nitrogen fixation ; fertilizer ; human ; legacy N ; manure ; nitrogen ; nitrogen surplus
英文简介	In the present work, we have synthesized agricultural, population, and atmospheric deposition data across the contiguous U.S. for the period 1930-2017 to develop the Trajectories Nutrient Dataset for Nitrogen (TREND-nitrogen). The data is provided at U.S. county scale at an annual time step, and the following components of the N mass balance are included: atmospheric N deposition, N fertilizer, biological N fixation, manure N, crop N uptake, human N waste, and the overall N surplus. The dataset was constructed using information from a variety of sources, including the U.S. Census of Agriculture, the National Atmospheric Deposition Program, the United States Geological Survey, and the U.S. Census Bureau. Gap-filling and data-fusion techniques were utilized to provide annual-scale coverage and to harmonize data obtained from disparate sources over different time periods and varying spatial scales. The dataset will facilitate investigations of spatial and temporal changes in anthropogenic N dynamics at multiple scales across the U.S. in the context of historical changes in population, land use, and management.
空间范围	Median Latitude: 37.000000 * Median Longitude: -103.500000 * South-bound Latitude: 25.000000 * West-bound Longitude: -126.000000 * North-bound Latitude: 49.000000 * East-bound Longitude: -81.000000
时间范围	1850-01-01T00:00:00 - 2015-12-31T00:00:00
语种	英语
国家	国际
学科大类	气候变化
学科子类	气候变化
文献类型	数据集
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/215563
推荐引用方式 GB/T 7714	Byrnes,Danyka K,Van Meter,et al. Trajectories Nutrient Dataset for Nitrogen (TREND-nitrogen).2020-05-19.https://doi.pangaea.de/10.1594/PANGAEA.917583.