地理研究

地理研究 ›› 2000, Vol. 19 ›› Issue (3): 297-302.doi: 10.11821/yj2000030011

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土壤侵蚀预报研究中的标准小区问题论证

张科利, 刘宝元, 蔡永明   

  1. 北京师范大学资源与环境科学系, 北京 100875
  • 收稿日期:1999-07-22 修回日期:2000-04-20 出版日期:2000-09-15 发布日期:2000-09-15
  • 作者简介:张科利(1962- ),男,陕西宝鸡人,日本农学博士,现为北京师范大学资源与环境科学系副主任、副教授。主要从事的专业领域为土壤侵蚀及水土保持、地貌学、土壤学。主要研究方向为坡面土壤侵蚀机理及土壤侵蚀预报模型。已在《科学通报》、《水土保持学报》、《土壤学报》、《地理研究》,以及日本《农业土木工程学会论文集》等十余种专业刊物上发表论文近40篇。
  • 基金资助:
    国家杰出青年科学基金资助项目(49725103);重点资助项目(19832060)

The standard of unit plot in soil loss prediction of China

ZHANG Ke-li, LIU Bao-yuan, CAI Yong-ming   

  1. Department of Resources and Environmental Science, Beijing Normal University, Beijing 100875, China
  • Received:1999-07-22 Revised:2000-04-20 Online:2000-09-15 Published:2000-09-15

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被引次数

146 | 17

摘要： 确定标准小区在土壤侵蚀预报中具有重要意义,也是进行土壤侵蚀规律研究的必要基础。文中根据我国的自然环境条件、土壤侵蚀特征、农业生产特点,通过分析土壤侵蚀发生的地形特点、已有资料的坡度变化范围,以及土壤流失量估算中的误差变化规律,提出并论证了我国土壤侵蚀研究中的标准小区应选定15°坡度、20m坡长、5m宽的清耕休闲地。小区每年按传统方法准备成苗床,并按当地农作习惯适时中耕,保证没有明显的杂草生长。

关键词: 土壤侵蚀, 预报, 标准小区

Abstract: Determination of unit plot is very important for soil loss prediction, it is also a key base to researches on erosion mechanism. According to environmental conditions, characteristics of soil erosion and agricultural production, standard of unit plot in China was studied based on analysis of landform features of erosive regions, previous data from field observation, and error diffusion in soil loss prediction. The Standard of Unit Plot in Soil Loss Prediction of China was put forward, the unit plot is 20 m long, 5 m wide, with a uniform length-wise slope of 15°, in continuous fallow and preparation in accordance with local farming system.

Key words: soil erosion, prediction, standard of unit plot

PACS: 

  • S157.3