img

官方微信

高级检索

中国沙漠 ›› 1989, Vol. 9 ›› Issue (1): 19-33.

• 论文 • 上一篇    下一篇

山东省黄河冲积平原风沙化土地的研究

陈广庭, 杨泰运, 张伟民   

  1. 中国科学院兰州沙漠研究所
  • 出版日期:1989-03-20 发布日期:1989-03-20

Studies on Blownsand Land in Huanghe Alluvial Plain,Shandong Province

Chen Guangting, Yang Taiyun, Zhang Weimin   

  1. Institute of Desert Research, Academia Sinica, Lanzhou
  • Online:1989-03-20 Published:1989-03-20

摘要: 山东省黄河冲积平原风沙区总面积1842.64万亩, 其中风蚀耕地1108.93万亩, 现代风沙化表现为农田土壤风蚀。每年损失土壤2133.69万吨, 损失肥料量相当于标准化肥21.24万吨。风沙化还从两方面发展:(1)由于近年降雨偏少, 持续的干旱使地下水位下降, 分布在黄河故道槽形洼地的盐渍土旱化脱盐, 受风蚀演变为风沙化土地;(2)山东省每年引黄60-80亿立方米, 带来的沙有4080-5440万立方米, 这些沙大部分填淤在引黄干渠上段和沉沙池附近, 受风的吹蚀形成新的风沙化土地。当前自然因素的发展趋势不容乐观, 要治理风沙化土必须注意人为因素, 对大自然施加良好的影响。

Abstract: Blownsand region of Huanghe alluvial plain in Shandong Province coves an area of 18.43 million mu, in which wind eroded farmland occupies 11.09 million mu, therefore, blownsand phenomena can be reflcted in the forms of wind erosion of farmlands. Every year about 21.34million tons of soil were blown away, corresponding to 0.2124million tons of standard fertilizer loss. Blownsand lands are still expanding in two ways:(1) Owing to continuous drought and descent of water table, saline soils distributed on ancient riverbed are turning into blownsand lands throgh arid desalination and wind erosion.(2) Every year about 600-800 million m3 o HeuJng-he River water, with 40.80-54.40. million m3 of sediments, was drawn to Shandong Province, most of sediments silted up into upper sections of main canlas and settling ponds, Then they were blown off and formed into new blownsand lands. At present, natural factors have not turned to a favourable condition, we must pay more attention to rehabilitate blownsand lands and exert a better influences to the nature.