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在一个流域或区域的范围内,依据地形条件,土地利用状况,影响当地生产、生活的灾害的种类、程度以及结合区域内的道路、水利、工程和居民点等,规划配置各具特点的,不同的防护林林种,使它们在配置上互相协调,功能上互相补充,形成一个因地制宜,因害设防的防护林综合体,这样由防护林林种组成的有机整体称之为防护林体系。
Within the scope of a river basin or region, according to the topographic conditions, land use conditions, the types and levels of disasters affecting the local production and life, and the combination of roads, water conservancy, engineering and residential areas in the region, Different kinds of shelterbelts make them coordinate with each other in terms of configuration and complement each other in function so as to form a shelter forest complex that is suited to local conditions and fortified with shelterbelt. Thus, the organic whole made up of shelterbelt species is called a shelterbelt system.