城市生态系统95课件.ppt

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1、生态环境是一个整体,不仅仅是一种自然环境,是由生生态环境是一个整体,不仅仅是一种自然环境,是由生物群落及非生物自然因素组成的各种生态系统的综合。主物群落及非生物自然因素组成的各种生态系统的综合。主要或完全由自然因素形成,生物,主要是人类在其中则是要或完全由自然因素形成,生物,主要是人类在其中则是一种行为主导力量,在对自然环境进行改变的过程中也在一种行为主导力量,在对自然环境进行改变的过程中也在间接地、潜在地、长远地受着环境对其生存和发展影响。间接地、潜在地、长远地受着环境对其生存和发展影响。因此生态环境与自然环境是不相同的。生态环境包含了人因此生态环境与自然环境是不相同的。生态环境包含了人类与

2、环境之间的关系在内,只有具有一定生态关系构成是类与环境之间的关系在内,只有具有一定生态关系构成是系统整体才可以称为生态环境。生态环境必然导致人类与系统整体才可以称为生态环境。生态环境必然导致人类与环境之间的关系异化,给人类生存和发展带来损害。因此环境之间的关系异化,给人类生存和发展带来损害。因此必须保护和改善生态环境。必须保护和改善生态环境。环境状况公报环境状况公报2全国分省1990年人均标准能源消费全国分省1991年人均标准能源消费G8JbNeQhTlWo#r%u(y+B2E6H9LcOfRjUmXp!s&w)z0C4F7IaMdPgSkVnZq$t*x-A1D5G8KbNeQiTlWo#r

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