首页> 中文期刊> 《资源与生态学报(英文版)》 >坡耕地径流与土壤侵蚀研究进展

坡耕地径流与土壤侵蚀研究进展

         

摘要

Soil erosion has become a serious environmental problem worldwide, and slope land is the main source of soil erosion. As a primary cover of slope land, crops have an important influence on the occurrence and development of runoff and soil erosion on slope land. This paper reviews the current understanding of runoff and soil erosion on slope cropland. Crops mainly impact splash detachment, slope runoff, and sediment yield. In this review paper, the effects of crop growth and rainfall on the splash detachment rate and the spatial distribution of splash detachment are summarized. Crop growth has a significant impact on runoff and sediment yield. Rainfall intensity and slope gradient can influence the level of erosive energy that causes soil erosion. Furthermore, other factors such as antecedent soil water content, soil properties, soil surface physical crust, and soil surface roughness can affect soil anti-erodibility. The varying effects of different crops and with different influence mechanisms on runoff and soil erosion, as well as changes in their ability to influence erosion under different external conditions should all remain focal points of future research. The effect of crop vegetation on runoff and soil erosion on slope land is a very important factor in understanding large-scale soil erosion systems, and in-depth study of this topic is highly significant for both theory and practice.%土壤侵蚀一直是重要的全球性环境问题之一,而坡耕地的土壤侵蚀是坡地水土流失的主要源头.作为坡耕地的主要覆盖方式,作物对坡耕地径流和土壤侵蚀的发生和发展都产生了重要的影响.本文主要回顾了目前坡耕地径流和土壤侵蚀的影响因素,以及作物生长、降雨溅蚀及其空间分布等问题.作物主要影响了坡耕地雨滴溅蚀、坡面径流和侵蚀产沙,并且径流和土壤侵蚀还受降雨强度、坡度、土壤前期含水量、土壤表层物理结皮及土壤糙率等因素影响.不同作物对径流和土壤侵蚀的作用和影响机制,以及它们在不同外部条件下影响侵蚀的能力的变化,都将成为未来研究的重点.作物植被对坡地土壤侵蚀的影响是了解大规模土壤侵蚀系统的一个重要因素,对这一课题的深入研究对坡耕地径流和土壤侵蚀研究的理论和实践都具有重要意义.

著录项

  • 来源
    《资源与生态学报(英文版)》 |2018年第5期|461-470|共10页
  • 作者单位

    中国科学院水利部水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室,陕西杨凌 712100;

    中国科学院大学,北京 100049;

    长江科学院水土保持研究所,武汉 430010;

    西北农林科技大学水土保持研究所,陕西杨凌 712100;

    中国科学院水利部水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室,陕西杨凌 712100;

    西北农林科技大学水土保持研究所,陕西杨凌 712100;

    西安理工大学西北水资源与环境生态重点实验室,西安 710048;

    中国科学院水利部水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室,陕西杨凌 712100;

    西北农林科技大学水土保持研究所,陕西杨凌 712100;

  • 原文格式 PDF
  • 正文语种 chi
  • 中图分类
  • 关键词

    径流; 土壤侵蚀; 作物; 坡耕地; 影响;

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