排序方式: 共有19条查询结果,搜索用时 15 毫秒
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采用线路调查、设置样地、标本采集、拍摄照片等方法对长沙黄花国际机场植物进行调查,分析机场物种组成与植被型。结果表明:机场外围共有植物85种,隶属于39科,可划分为4个植被型,7个植被亚型,15个群系和栽培植被2个植被型3个亚型,机场内植物共25科55属68种,分为1个植被型,13个群系。机场内生活型以1年生草本为主,植物果实类型多样,以颖果、瘦果为主要果型。多样的植物群落为鸟类提供了丰富的食物资源、多样的隐蔽场所和巢址,要达到生态防治鸟击则需要对现有植被加以改造。 相似文献
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浙江舟山桃花岛的天然植被类型 总被引:4,自引:5,他引:4
以点-线结合法等对桃花岛天然植被进行了调查,根据群落外貌特征,建群层片中相同生活型植物重要值大小及建群种的异同将该岛的天然植被划分为8个植被型,即:Ⅰ、常绿阔叶林;Ⅱ、落叶阔叶林;Ⅲ、常绿、落叶阔叶混交林;Ⅳ、暖性针叶、阔叶混交林;Ⅴ、暖性针叶林;Ⅵ、常绿阔叶灌丛;Ⅶ、灌草丛;Ⅷ、草甸。以此该岛植被可进一步划分为12个群系,即:1.青冈、石楠、刺叶桂樱林;2.南京椴、枫香林;3.枫香林;4.红楠、日本珊瑚树、落叶树林;5.青冈、红楠、枫香林;6.马尾松、青冈、枫香林;7.马尾松林;8.柃木灌丛;9.滨柃、赤楠灌丛;10.禾草灌丛;11.沙钻苔草、绢毛飘拂草、肾叶打碗花草甸;12.碱蓬、钻形紫菀群落。本文对各群系的组成及结构特征进行了描述。根据目前更新层树种的重要值分析后,笔者认为现有的主要森林群落若加以保护,将较快地演替为常绿阔叶林。鉴于岛屿植被的特殊性,在植被片下划分植被小区时,舟山群岛可单独划为岛屿植被小区。 相似文献
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皇冠山自然保护区(以下简称保护区)是以大熊猫及其栖息地为主要保护对象的森林和野生动物类型的自然保护区。保护区划分核心、缓冲、试验三大功能区,以实现对自然资源的多功能管理。区内野生动物种类繁多,有271种,国家I级保护动物6种,Ⅱ级保护动物29种。野生真菌182种,昆虫1492种.有种子植物1419种,国家珍稀濒危保护植物19种,植被类型复杂,有3个植被型组,7个植被型,10个植被亚型,28个群系(其中竹林6287公顷)。独特的区位优势,是秦岭大熊猫及其栖息地向东延伸的纽带。 相似文献
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广州白云山风景区的植被和主要植物群落类型 总被引:10,自引:4,他引:10
依据生态外貌和群落结构特征并结合聚类和排序等方法,分析了广州白云山的植被特点,划分了群落类型,并描述了每种群落类型的特征。白云山的植被可划分为3种植被型组、3种植被型,4种植被亚型,12个群系和29个群丛。 相似文献
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根据《中国植被》分类系统和单位,仙女山森林公园有温性针叶林、暖性针叶林、竹林、落叶阔叶灌丛、草甸和沼泽植被6个植被型,主要群系21个。公园原生森林植被已不复存,现状植被特点是:1.人工针叶林壮观,草甸典型,观赏游玩价值高;2.群落结构简单,物种组成多样性不高;3.无序放牧,草场退化比较严重,非适口性双子叶植物杂草(如巴天酸模、香青、水蓼)部分区域成灾;4.植被卫生环境较差,栽植的油松小老头树、死树、枯枝叶树甚多,杉木病虫害、死树、枯枝叶随处可见,草甸上畜牧粪便太多,生活垃坡、白色污染时有存在。论文提出植被保护4点建议:1.人工促进生物多样性的发展,适地适树,增加阔叶乡土树种;2.有序放牧促进草甸顺向演替,减少目前一半的放牧数量;3.强化科普教育,增加有关人员的生物学、生态学知识;4.增强宣传力度,提高游人及相关人员对公园生态保护意识。 相似文献
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Distribution patterns of vegetation biomass and nutrients bio-cycle in alpine tundra ecosystem on Changbai Mountains, Northeast China 总被引:1,自引:0,他引:1
A study was conducted to test the correlation between biomass and elevation and the differences in concentration and storks of nutrients among five vegetation types (Felsenmeer alpine tundra vegetation-FA, Lithic alpine tundra vegetation-LA, Typical alpine tundra vegetation-TA, Meadow alpine tundra vegetation-MA, and Swamp alpine tundra vegetation-SA) on alpine tundra of Changbai Mountains, Jilin Province, China in growing seasons of 2003, 2004 and 2005. The biomass of 43 mono-species and soil nutrients in alpine tundra ecosystem were also investigated. Dominant species from Ericaceae (such as Rhododendron chrysanthum and Vaccinium jliginosum var. alpinum) were taken to analyze organ biomass distribution. Result showed that the biomass and elevation had a significant correlation (Biomass-237.3 in(Elevation) +494.36; R^2=0.8092; P〈0.05). No significant differences were found in phosphorus and sulphur concentrations of roots, stems and leaves among the five vegetation types. There were significant differences in nitrogen and phosphorus stocks of roots, stems and leaves and in sulphur stock of stems and leaves among TA, MA, and SA vegetation types (p〈0.05). The nutrient stock of five vegetations was averagely 72.46 kg.hm^-2, of which N, P, S were 48.55, 10.33 and 13.61 kg·hm^-2, respectively. Soil N and S concentrations in meadow alpine tundra soil type was significantly higher than those in other four soil types (Cold desert alpine tundra soil, Lithic alpine tundra soil, Peat alpine tundra soil, and Gray alpine tundra soil). Phosphorous concentration in SA type was higher (p〈0.05) than in other types. Soil nutrient stock (0-20cm) was averagely 39.59 t.hm^-2, of which N, P, S were 23.74, 5.86, 9.99 t·hm^-2, respectively. 相似文献
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根据《中国植被》所阐述的植被分类原则及命名方法,结合生态学原则和实际情况,确定各层片的优势种或优势种群组,大罗山自然保护区植被可分为5个植被型、15个群系、32个群丛。 相似文献