北京市大兴区景观林改造提升中植物选择与配置方面的研究

发布时间：2018-04-29 18:58

本文选题：杨树 + 低效景观林　；参考：《西北农林科技大学》2015年硕士论文

【摘要】：大兴区为五个风沙危害区之一,风沙危害程度和规模均较大,上世纪大兴区开始进行大规模的造林活动,且造林绿化树种97%为杨树,故有“杨家将”之称。近年来,大兴区杨树林综合效益不断降低,更新速度慢,缺乏树种选择及植物配置等低效林更新改造技术。为了解决这一问题,本研究对杨树防护林更新改造模式、杨树片林改造升级公园、杨树绿色通道改造提升等关键技术进行了研究。主要获得以下结论:1)选用落叶乔木22种,常绿乔木6种,花灌木31种,地被植物20种,水生植物6种。落叶、常绿乔木、花灌木、地被及水生植物的选择及合理配置,达到了增添树种、丰富季相变化、植物群落趋于平衡、形成复层立体结构的目标。2)公园的游憩、生物多样性、景观美化、教育、防灾避灾等特有功能得到体现。为居民提供了多处自然、健康、和谐、可持续的休闲游憩场所,公园周边居民的居住环境发生了根本性的转变,填补了该地区缺乏休闲区的空白,提高了居民生活质量。3)筛选出适合在绿色通道改造提升中使用的落叶乔木8种、常绿乔木6种、花灌木9种、地被植物5种,常绿乔木应加强管护,二月兰、板蓝根需3~4年播种一次。4)筛选出绿色通道改造提升的7种模式,并确定其各自的适用条件,为华北地区道路和街区改造提升提供依据。
[Abstract]:Daxing District is one of the five wind-sand hazard areas. The damage degree and scale of wind-sand damage are great. In the last century, Daxing District began to carry out large-scale afforestation activities, and the afforestation tree species were poplar trees, so it is known as "Yang Jiagang". In recent years, the comprehensive benefit of poplar forest in Daxing district is decreasing, the regeneration rate is slow, and the technology of regeneration and transformation of low efficient forest is lacking, such as tree species selection and plant allocation. In order to solve this problem, the key technologies of poplar shelter forest renewal and transformation, poplar forest regeneration and upgrading park, poplar green channel reconstruction and upgrading were studied in this study. The main conclusions are as follows: (1) 22 species of deciduous trees, 6 species of evergreen trees, 31 species of flowering shrubs, 20 species of ground cover plants and 6 species of aquatic plants. The selection and rational allocation of deciduous leaves, evergreen trees, flowers and shrubs, ground cover and aquatic plants have increased tree species, enriched seasonal changes, balanced plant communities, and formed a layered three-dimensional structure of the park's recreation and biodiversity. Landscaping, education, disaster prevention and other unique functions have been reflected. It has provided many natural, healthy, harmonious and sustainable leisure and recreation places for the residents. The living environment of the residents around the park has undergone a fundamental change, filling the gap in the lack of leisure areas in the area. 8 deciduous trees, 6 evergreen trees, 9 flowers and shrubs, 5 ground cover plants, and evergreen trees should be strengthened and protected. In order to provide basis for road and block upgrading in North China, 7 models of green channel reconstruction and upgrading were screened out and their respective applicable conditions were determined for Radix Isatidis to be sown once every 3 ~ 4 years.
【学位授予单位】：西北农林科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：S688

【引证文献】