用创新思维破解风沙运动机理——两种理论体系核心的剖析  

Cracking the root of the Two Theory Systems on eolian sand movement mechanism from an innovative perspective

作　　者：孙显科[1] 张学利[2] 

机构地区：[1]辽宁省林业厅,沈阳110031 [2]辽宁省固沙造林研究所,辽宁阜新123000

出　　处：《地理学报》2015年第1期73-84,共12页Acta Geographica Sinica

摘　　要：从地理学视角首次将风沙运动分解为内核和外延两部分,提出沙粒起动是风沙运动的内核,将沙粒起动后的一切输移表现界定为外延。流体起动和跃移质冲击起动是构成内核的两个实体。利用这一创新理念,对风沙物理学和风沙地理学两种理论体系的不同核心展开讨论。结果表明:能否区分内核两个实体的不同本质属性和能否摆正两个实体的互动机理是导致两种理论不同核心的形成和出现许多分歧的根源。本文深化了对风沙运动内涵的理解,从理论上突破了R.A.拜格诺长期用一扬一贬沙粒两种起动观引领沙坛学术潮流的核心理念。This article breaks down the eolian sand movement into two parts from a geographic perspective for the first time,the inner core and the outer extension.The fluid start and the impact start of saltation are the two entities that constitute the inner core,and all transportation performance after the sand particle start can be defined as the outer extension.Drawing upon this innovative idea,this article carries out discussion on the root of how divergences arise between the two systems of theories,the eolian sand physics and the eolian sand geography.The results reveal that whether one is able to distinguish the different properties of the two entities of the inner core and whether one is able to understand the interaction mechanism correctly of the two entities lead to the formation of the cores of the two theoretical systems and are the root of many divergences.This article deepens the understanding towards the connotation of eolian sand movement and theoretically breaks through the long term leading core idea in the sand movement scholastic circle presented by Bagnold whose theory on the two types of sand particle start appreciates one and depreciates the other.

关 键 词：风沙运动理论体系 风沙物理学 风沙地理学 风沙运动内核 

分 类 号：P425.55[天文地球—大气科学及气象学]