推荐回答（1个）
石头、土地、水、生物和大气是人类直接赖以生存和发展的自然支撑体系。但人类
诞生和进化经历了三四百万年的历史中，人类长期受到自然界的奴役和统治，在与自然
界的斗争中，增强了征服自然的智慧与能力。随着生产力的发展、社会的进步和科学技
术的昌盛，特别是工业革命以来，随着人口的增长和社会的发达，人类向自然界无限制
的索取，导致自然支撑系统的失衡：某些矿产资源和化石能源的短缺与枯竭；土地的侵
蚀与退化，耕地、森林、草场的锐减，干旱化与荒漠化的扩大蔓延，灾害频发；水体污
染与淡水资源的严重短缺；环境污染加剧，酸雨区扩展，生存环境恶化；大气中温室气
体的加速增长，全球气温增高与海平面上升，臭氧空洞增多与不断扩大；生态恶化，生
物多样性锐减。灾难深重的地球已不堪重负，使人类的生存环境与社会发展受到严重威
胁。
20世纪70年代以来，人类认识到要协调与自然界的关系，人类社会与自然界必须和
谐共处，永续利用地球的资源和不断改善地球的环境，可持续发展是人类社会的生存与
发展的唯一选择，是一个全球性的发展战略；它要求既满足现代人的发展需要，又不妨
碍子孙后代的生存需求；既有利于本地区的发展，又不对邻近地区以至全球的发展构成
危害；强调人类的经济与社会发展与生态、环境的改善与发展协调，人与自然要和谐共
处、协调发展。
我们只有一个地球。要爱护、珍惜这颗孕育了人类并为之生存与发展做出了无私贡
献的行星，要把地球建设成为高度文明发展的、与人类和谐协调的、美丽富饶的大家
园。让地球永远以婀娜多姿的风采驰骋于浩瀚的宇宙。
其他：
“小鸟天堂”堪称自然界一大奇观，但在被发掘为景点之前，一直沉寂于乡间，自明万历戍午 年(公 元1618年)，当地人称之为“罗星凸”，后民间流行称“雀墩”。河中一个泥墩、一棵榕树长期繁衍，形成枝叶覆盖1万多平方米，树上栖鸟千万只，鸟树相依，人鸟相处，和谐奇特。这是世间罕有的一道天然美丽风景线。
而今，小鸟天堂插上翅膀，飞遍国内外，声名远扬。近年小鸟天堂进行多次升级改造，发展成为集生态旅游、文化旅游、健康旅游、休闲旅游于一体，充分展现旅游新时尚的园林化的多功能大型景区。2002年，景区重新规划扩建，并对动、植物自然生态群落加以悉心保护和优化。去年，作为上海世博广东馆“生命之树小鸟天堂”互动展项的设计原型地，小鸟天堂更崭露头角，知名度大增。目前，景区正积极筹划扩建为以独特鸟类观赏为主题的大型湿地公园，形成人、鸟、榕和谐相处的绿色典范。
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