【摘要】 通过对北京地区森林的近自然评价,构建了适合北京森林环境条件和自然规律的森林经营策略。首先根据现地植被情况和立地条件,对植被群落分级,然后再依据近自然度评价结果,绘制群落生境图,在此基础上设计了林分作业体系,该体系的应用可节约至少30%的造林经费,提高林分生长量25%以上。更多还原

【Abstract】 The forest management strategies fitting for the forest conditions in Beijing and the order of nature were established by estimating the near-nature forests.Firstly,the vegetation types were classified by the actual vegetation and site conditions.Secondly,the habitat map of communities was worked out in accordance with the result of near-nature estimation.Finally,an operating system of forest stands was designed.At least 30 percent afforestation cost could be saved by applying this system and 25 percent growth increment of forest stand could be obtained.更多还原