推荐回答(2个)
乌鲁木齐主要的针叶植物都分布在山区里
乌鲁木齐周围的戈壁滩的植物都有红柳,芨芨草,杨树
植物景观是自然景观的重要标志,它构成不同地区自然景观的特色。丰富的奇花异草又使自然景观更加绚丽多彩,使旅游者对旅游时间和地点有更大的选择余地,从而扩大了旅游区域和延长了旅游季节。我国由北往南热量的逐渐递增,使植物景观呈纬度地带性变化,以大兴安岭—吕梁山—六盘山—青藏高原东缘一线以东的森林区为例,由北往南依次出现寒温带落叶针叶林带,温带针阔叶混交林带,暖温带落叶阔叶林带,亚热带常绿阔叶林带,热带季雨林和雨林带;该线西北部在天山南北分别为暖温带荒漠和温带荒漠;青藏高原平均海拔四千米,故以高寒草甸灌丛和高寒荒漠为主,低海拔的藏南谷地则有较大面积的森林分布。我国夏季受东南季风所带来的水分影响,自东南向西北,水分递减,植物景观呈经度地带性变化。以昆仑山—秦岭—淮河一线以北的温带和暖温带地区为例,从东向西,依次为湿润、半湿润区、半干旱、干旱区。植物景观依次为夏绿阔叶林或针阔混交林,草原(草甸草原—典型草原—荒漠草原)和荒漠。我国地势起伏,高山连绵,故而植物景观从山下到山顶,具有垂直地带性的变化,一般由常绿阔叶林,落叶阔叶林,针阔混交林,针叶林,灌丛,草甸,苔原直至永久积雪带。
高山植物
在山区,海拔每上升百米气温下降0.6℃,山上山下气候的差异使高山植物有许多特点。千米以上的中高山上,由于气温低,日差较大,山风较强,湿度大,空气稀薄,土壤瘠薄,紫外辐射强烈,对植物细胞伤害剧烈,故这种环境生长的树木往往极耐瘠土,能够生长在石缝中;或呈低矮匍匐状,生长缓慢;树干内纤维发达,枝条弯曲,韧性强,经得起长年风吹雨打;山上的常年定向风和日照使迎风面和背阴坡的枝条不甚发育形成旗形树冠,黄山的迎客松就是这样。高山花卉往往色彩艳丽,如绿绒蒿,报春花和龙胆花等,这是植物为了避免紫外线伤害而大量产生能够吸收紫外线的花青素和胡萝卜素之故,前者使花呈现更加美丽的红、蓝、紫等颜色,后者使花朵具有更加鲜明的橙黄色。由于气候的差异,高山植物开花往往较山下的为迟,这也就是白居易所吟的“人间四月芳菲尽,山寺桃花始盛开”的道理。
秋色植物
植物叶片因含叶绿素而通常呈绿色。除叶绿素外,叶片还含有叶黄素等。入秋天气渐冷,落叶植物在脱叶之前叶片中的叶绿素逐渐分解,而叶黄素则显出,故很多植物叶色变为金黄,如白桦、银杏、鹅掌楸和悬铃木等、宋范仲淹有“碧云天,黄叶地,秋色连波,波上寒烟翠”之句,秋天黄叶常成为古人伤感情绪的象征。有些植物则在落叶前产生花青素而变为红叶。杜牧诗云:“停车坐爱枫林晚,霜叶红于二月花。”人们通常所称的枫树是枫香与多种槭树的泛称。红叶植物有多种,陈毅诗吟“西山红叶好,霜重色愈浓”,所指的北京西山红叶多是漆树科的黄栌。苏州天平山前一片红叶林,则是金缕梅科的枫香,其叶片三至五裂,广布于南方各地。槭树科的鸡爪槭,三角枫和五角枫等入秋叶子也变成丹赤,加拿大国旗上的那张叶片便是槭树科的糖槭。此外,秋天浙江山区公路两侧的红叶植物往往是大戟科的乌桕。众多的秋色植物点缀了秋天的园林山色。
常见的植物有侧柏,白皮松,黄山松,银杏,香樟,柳杉,菩提树,槐,梅花、、、
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