西藏桑日县园林植物调查与应用研究
2015-09-02刘智能潘刚张红锋方江平王维徐瑾
刘智能 潘刚 张红锋 方江平 王维 徐瑾 周鹏
摘 要:调查、讨论分析了桑日县园林绿化的现状、特点及问题,提出了相应举措。本次共调查园林植物16科、26属、36种(含品种)。调查结果表明:(1)乔木层、灌木层、草本层重要值最高的分别为白柳、千头柏、草地早熟禾,重要值分别为88.367,97.756,79.751;(2)该县绿化植物中,应用最多的是蔷薇科,为6种;其次是杨柳科、柏科、禾本科,分别为5,4,4种,分别占调查植物的13.89%,11.11%,11.11%;(3)高原自然环境条件是最大的制约因子;(4)园林植物应用种类匮乏,绿化形式单调,地方特色不突出。
关键词:西藏;桑日县;园林植物;调查;重要值
中图分类号:S731 文献标识码:A DOI 编码:10.3969/j.issn.1006-6500.2015.09.037
Investigation and Application Research of Landscape Plants in Tibet Sangri County
LIU Zhi-neng1, PAN Gang1, ZHANG Hong-feng1, FANG Jiang-ping2, WANG Wei1, XU Jin1, ZHOU Peng1
(1.Department of Resources and Environment, Tibet Agricultural and Animal Husbandry College, Nyingchi, Tibet 860000, China; 2.Scientific Research Institute, Tibet Agricultural and Animal Husbandry College, Nyingchi, Tibet 860000, China)
Abstract: Investigated, analyzed and discussed the current situation, characteristics and problems of Sangri County landscape and put forward corresponding countermeasures. There were 16 families, 26 genera, 36 species (including varieties) in this investigation. The investigation showed that:(1)the highest important value of arbor layer,shrub layer, herb layer were Salix alba, Platycladus orientalis cv. Sieboldii, Poa pratensis, the important value were 88.367, 97.756, 79.751 respectively. (2)The most applicating green plants in Sangri County were Rosaceae,Salicacea, Cupressaceae,Gramineae. They were 5,5,4 species and occupied 13.89%,11.11%,11.11% respectively in the investigating plants. (3)The biggest restriction factors were the plateau natural environment conditions. (4)In Sangri County the application of landscape plants species were poor, the landscape form was monotonous and the local features were not prominent.
Key words:Tibet; Sangri County; landscape plants; survey; important value
西藏地处青藏高原核心地带,素有“世界第三极”之称,是中国生态安全的屏障体系,更是全球气候变化的反应器。城市绿化是生态安全的重要组成部分,目前西藏各级政府越来越重视西藏城镇的园林绿化工作,园林绿化建设事业得到了飞速发展,但其中也出现了各种问题。目前,针对西藏各地的园林绿化的研究很少,内容主要集中在综述、定性分析植物群落配置、生态发展模式、种植等方面,而关于西藏园林绿化定量分析的研究非常匮乏。为了摸清西藏园林绿化的家底,解决绿化中出现的各种问题,定量分析西藏绿化的现状,为本地区园林绿化提供指导,本次结合课题首次在西藏对各地的园林植物种类和应用现状进行了全面普查。
1 桑日县概况
桑日县地处冈底斯山南麓,雅鲁藏布江中游河谷地带,距拉萨230 km,总面积2 634.62 km2,总人口1.7万,辖三乡一镇。……
