...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Land Use Policy >Estimating the soil erosion cover-management factor at the European scale
【24h】

Estimating the soil erosion cover-management factor at the European scale

机译：在欧洲范围内估算水土流失覆盖率管理因子

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Land use and management influence the magnitude of soil loss. Among the different soil erosion risk factors, the cover-management factor (C-factor) is the one that policy makers and farmers can most readily influence in order to help reduce soil loss rates. The present study proposes a methodology for estimating the C-factor in the European Union (EU), using pan-European datasets (such as CORINE Land Cover), biophysical attributes derived from remote sensing, and statistical data on agricultural crops and practices. In arable lands, the C-factor was estimated using crop statistics (% of land per crop) and data on management practices such as conservation tillage, plant residues and winter crop cover. The C-factor in non-arable lands was estimated by weighting the range of literature values found according to fractional vegetation cover, which was estimated based on the remote sensing dataset F-cover. The mean C-factor in the EU is estimated to be 0.1043, with an extremely high variability; forests have the lowest mean C-factor (0.00116), and arable lands and sparsely vegetated areas the highest (0.233 and 0.2651, respectively). Conservation management practices (reducedo tillage, use of cover crops and plant residues) reduce the C-factor by on average 19.1% in arable lands.
机译：土地利用和管理影响土壤流失的程度。在不同的土壤侵蚀风险因素中，覆盖率管理因素（C因子）是决策者和农民最容易影响的因素，以帮助减少土壤流失率。本研究提出了一种使用泛欧洲数据集（例如CORINE Land Cover），从遥感获得的生物物理属性以及有关农业作物和实践的统计数据来估算欧盟（EU）中C因子的方法。在耕地中，C因子是使用作物统计数据（每种作物占土地的百分比）和管理实践数据（如保护性耕作，植物残渣和冬季作物覆盖率）估算的。通过对根据植被覆盖度分数计算得出的文献值范围进行加权，可以估算非耕地的C因子，而植被覆盖度是根据遥感数据集F-cover进行估算的。欧盟的平均C因子估计为0.1043，差异非常大。森林的平均C因子最低（0.00116），而耕地和稀疏植被区域最高（分别为0.233和0.2651）。保护管理措施（减少/免耕，使用农作物和植物残渣）在耕地上可使C因子平均降低19.1％。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号