期刊文献+

Nutrient Losses in Soils on Loess Plateau 被引量:13

Nutrient Losses in Soils on Loess Plateau
下载PDF
导出
摘要 The soil nutrient losses due to excessive soil loss on Loess Plateau were studied by means of runoff plotsand systematical determination of soil nutrients both in sediments and runoff.The results show that theamounts of nutrient losses depended on the amounts of erosion sediments. Along with sediment, 11-197 kgnitrogen/hectare and 9-174 kg phosphorus/hectare were lost, accounting for 92.46-99.47 percent of the totalamount of nitrogen loss and 99.85-99.99 percent of the total amount of phosphorns loss respectively. Thenutrient losses, very small in runoff, were mainly attributed to erosion of a few rainstorms during a year. Thenutrient level in sediment was mostly higher than that in the original soil. Planting grass evidently reducedthe losses of soil nutrients. The N level was lower in runoff than in rainfall so that the N loss from runoffconld be made up by rainfall. Fertilizer application to crops raised the nutrient level in runoff. NutrientLossesinSoilsonLoessPlateanPENGLIN.WANGJI-ZENGandYUCUN-ZUNorthwesternInstituteofSoilandWaterConseruation,AcademiaSini...
出处 《Pedosphere》 SCIE CAS CSCD 1995年第1期83-92,共10页 土壤圈(英文版)
关键词 GRASS nutrient losses RUNOFF SEDIMENTS SOILS 黄土高原 土壤养分流失 径流 沉积物 产量 水土流失
  • 相关文献

同被引文献186

引证文献13

二级引证文献313

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部