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分析北京市有代表性的两类绿化标准,发现拔除杂草是现有城市绿化的重要内容之一。从差序格局的视角来看,乡土野草具有杂而有序的自然规律:一是随着季节气候、雨水特点次第生长的动态“纵”向时序格局;二是植物和动物、土壤、微生物、水、空气等构成了静态“横”向差异依存格局。错误的绿化标准导致生物多样性丧失,城市的生态系统保护应倡导“尊重自然”的生态文明理念,采取合乎自然规律的“让杂草长”绿化方式。
Based on the analysis of two representative greening standards in Beijing, we found that the removal of weeds is one of the important contents of existing urban greening. From the perspective of difference pattern, the native weeds have a heterogeneous and orderly natural law: one is the dynamic “vertical” pattern of the growth of the second order along with the seasonal climate and rainwater characteristics; the second is the order of the plants and animals, the soil, Micro-organisms, water, air, etc. constitute a static “horizontal ” to the difference-dependent pattern. Wrong greening standards lead to the loss of biodiversity. Urban ecosystem protection should advocate the concept of “respecting nature” and adopt the “green weed way” in line with the laws of nature.