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中国沙漠 ›› 1997, Vol. 17 ›› Issue (2): 199-203.

• 研究论文 • 上一篇    下一篇

波动性生态脆弱带的特征

孙武   

  1. 华南师范大学地理系, 广州 510631
  • 收稿日期:1996-01-09 出版日期:1997-06-20 发布日期:1997-06-20
  • 作者简介:孙武,男,1963年生,副教授,博士。主要从事区域地理、自然灾害等教学与科研工作。

THE NATURE OF THE FLUCTUATING ECOTONE

Sun Wu   

  1. Geography Department of South China Normal University, Guangzhou 510631
  • Received:1996-01-09 Online:1997-06-20 Published:1997-06-20

摘要: 波动性生态脆弱带是生态脆弱带的基本类型之一,跃变性是波动性的实质,降水的高变率与人类活动的保守性、稳定性的尖锐矛盾是形成脆弱的主要原因。牧草、粮食的放大性是对降水波动性的进一步体现,波动性是对农林牧土地利用结构,经济水平,人口超载状况的综合反映,是度量脆弱度的实用指标之一。

关键词: 波动性, 生态脆弱带, 跃变性, 放大性

Abstract: The Fluctuating is a major type of the Ecotone as Boundary Ecotone.Jump change is it's nature.The fluctuating of land productive forces is a scientific and practical index to weakness.High abruptness of climate change and conservatism of Man make up main contradiction between Man-land relation and basic cause for the weak.The amplification which means that the change for yield of grass and food is much larger than that of rain sharpens.

Key words: The Fluctuating, Ecotone, Jump change, Amplification

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