自然资源学报 ›› 1991, Vol. 6 ›› Issue (1): 45-54.doi: 10.11849/zrzyxb.1991.01.005

• 论文 • 上一篇    下一篇

云南玉龙山东南坡降雨因子与土壤流失关系的研究

姚治君, 廖俊国, 陈传友   

  1. 中国科学院国家计划委员会自然资源综合考察委员会
  • 出版日期:1991-03-25 发布日期:1991-03-25

ON THE RELATIONSHIP BETWEEN RAINFALL FACTORS AND SOIL EROSION

Yao Zhijun, Liao Junguo, Chen Chuanyou   

  1. Commission for Integrated Survey of Natural Resources, Chinese Academy of Seiences
  • Online:1991-03-25 Published:1991-03-25

摘要: 水土流失做为破坏生态环境、阻碍工农业生产、限制自然资源优势发挥的重要因素之一,是我国大部分地区生态环境系统中所面临的突出问题。本文以1985年云南玉龙雪山东南坡水土流失定点观测的实测数据为依据,着重定量分析了水土流失与其主要影响因子一降雨之间的关系。通过对比研究,阐述了不同降雨特征值对流失土量的影响,提出了雨强递减系数这一新的降雨影响因子。

关键词: 流失土量, 雨强递减系数, 次降雨量, 降雨强度

Abstract: Soil erosion is a serious and widespread problem in China. In this paper we investigate the quantitative relationship between rainfall factors and soil loss in the mountainous area of southwestern China, based on the data of a field experiment. We find that single rainfall factor such as rainfall amount or rainfall intensity can not be generally accepted as the best index for soil loss. We propose a new index which is a combination of different rainfall parameters. The correlation analysis shows this index is highly correlated with soil loss.

Key words: soil loss amount, rainfall amount, rainfall intensity, rainfall intensity successive index