• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The Kasetsart Journal >P-Factors in Universal Soil Loss Equation(USLE) of Various Conservation Practices on Hillslope at Mae Sa Integrated Watershed and Forest Land-use Project, Changwat Chiang Mai
【24h】

P-Factors in Universal Soil Loss Equation(USLE) of Various Conservation Practices on Hillslope at Mae Sa Integrated Watershed and Forest Land-use Project, Changwat Chiang Mai

机译：清迈昌瓦美沙综合流域和森林土地利用项目各种坡地保护措施的通用土壤流失方程（USLE）中的P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

P-factor in the USLE, the ratio of soil loss between conservation measures plot and up and down plowing plot, of 4 soil conservation measures namely bench terrace(BT), intermittent terrace(IT), hillside ditch(HD), and contour bund(CB) was determined based on soil loss during 1980 to 1990 observed from three replications of 5 X 20 meter runoff plots on 30/100 slopling area at Mae Sa Integrated Watershed and Forest Land-use Project, Chiang Mai. Results showed that P-Factor for BT, IT, HD and CB was averaged at 0.128, 0.245, 0.299 and 0.214 respectively. The same pattern of erosion control efficiency was also derived when P-factor was determined based on soil loss per a unite of rainfall factor and on mm of water loss.
机译：USLE中的P因子，即保护措施样地与耕作上下耕地之间的土壤流失比率，包括4种土壤保护措施，即台阶梯田（BT），间歇梯田（IT），山坡沟（HD）和等高线（CB）是根据1980年至1990年在清迈湄沙集水区和森林土地综合利用项目中在30/100坡度地区的5 X 20米径流地块的三个重复样地中观察到的土壤流失确定的。结果表明，BT，IT，HD和CB的P因子平均分别为0.128、0.245、0.299和0.214。当根据每单位降雨因子的土壤流失量和水损失mm来确定P因子时，也得出了相同的侵蚀控制效率模式。

著录项

相似文献

  • 外文文献
  • 中文文献
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