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城市景观是人类高度干扰的结果，城市景观的生态系统是由人类维持的高度不稳定的一种生态系统，城市园林绿化除满足美化和净化环境的需要外，还应以景观生态学原理为指导，保持一定的物种多样性，促进物质和能量的正常流动。
Urban landscape is the result of highly disturbed human beings. The urban landscape ecosystem is a highly unstable ecosystem maintained by human beings. In addition to meeting the needs of landscaping and environmental clean-up, urban landscaping should be guided by the principles of landscape ecology , To maintain a certain degree of species diversity, and promote the normal flow of material and energy.