Rainfall intensification increases nitrate leaching from tilled but not no-till cropping systems in the U.S. Midwest
作者: Laura J.T. HessEve-Lyn S. HinckleyG. Philip RobertsonPamela A. Matson
作者单位: 1Department of Earth System Science, Stanford University, 473 Via Ortega, Stanford, CA, 94305, USA
2Institute of Arctic and Alpine Research, 4001 Discovery Drive, Boulder, CO, 80309, USA
3Environmental Studies Program, 4001 Discovery Drive, Boulder, CO, 80309, USA
4W.K. Kellogg Biological Station, Michigan State University, Hickory Corners, MI, USA
5Department of Plant, Soil, and Microbial Sciences, Michigan State University, East Lansing, MI, USA
刊名: Agriculture, Ecosystems and Environment, 2020, Vol.290
来源数据库: Elsevier Journal
DOI: 10.1016/j.agee.2019.106747
关键词: Nitrate leachingNitrogenAgricultureTillageClimate changePrecipitation
原始语种摘要: Abstract(#br)As global surface temperatures rise, the percentage of total precipitation that falls in extreme events is increasing in many areas (“rainfall intensification”), including the U.S. Midwest, a major agricultural region. While it is well known that losses of nitrogen (N) fertilizers applied in excess of crop N demand have consequences for non-agricultural ecosystems, the effects of rainfall intensification on N losses from agricultural fields are uncertain. We conducted a 234-day field experiment in which we evaluated the effects of rainfall intensification on N leaching, soil inorganic N pools, soil N transformations, and crop N content in replicated tilled and no-till row crop systems of the upper Midwest. Under rainfall exclusion shelters we exposed 5 × 5 m plots to a...
全文获取路径: Elsevier  (合作)
影响因子:2.859 (2012)

  • cropping 剪毛
  • rainfall 降雨量
  • nitrate 硝酸盐
  • leaching 淋滤
  • tillage 耕地
  • percentage 百分数
  • agricultural 农业的
  • previously 以前
  • conducted 有陪同的
  • unaffected 末触动的