“自然地理系统”,是指由大气圈、水圈、岩石圈以及生物圈、土壤圈等要素,通过能量流、物质流和信息流相互联系、相互转化,组成的具有一定结构的、能完成一定功能的整体。这是从系统的角度提出的一个“自然地理学”研究对象的概念。如果从其它角度来看,我们可以找出与之内涵相同的一些概念:自然景观(景观圈)、自然地理综合体等等。如果我们不把人看成是特殊的主体,那么“自然环境”的概念也与之很相近。甚至有人把“生态系统”也看成自然地理系统的同义词。 自然地理系统是一个开放系统。构成自然地理系统的三个基本要素——物质、能量和信息,不但有着内部的转化,而且在系统和环境之间有着不停的交换。这样,使得系统本 “Natural geography system” refers to the combination of atmospheric, hydrosphere, lithosphere, biosphere, and soil circles, through which the energy flow, material flow, and information flow are linked and transformed to each other. The overall function. This is the concept of a “natural geography” research object proposed from the perspective of the system. If we look at it from other perspectives, we can find some concepts that are similar to its connotations: natural landscapes (landscape circles), natural geography complexes, and so on. If we do not regard people as special subjects, then the concept of “natural environment” is also very similar. Some people even see “ecosystems” as synonymous with natural geography. The physical geographic system is an open system. The three basic elements that make up the physical geography system - matter, energy and information - not only have internal transformations, but also have constant exchanges between systems and the environment. This makes the system this