推荐回答(4个)
主要有藏羚羊,沙狐、野牦牛、狼等等一些稀有动物,可可西里蒙语意为“青色的山梁”、“美丽的少女”,她位于青海省西北部,与新疆、西藏接壤,面积4.5万平方公里;
可可西里地处青藏高原腹地,整个保护区平均海拔在4600米以上,被称为“世界第三极”;又因为自然环境严酷,气候恶劣,至今仍是中国最大的无人区……
整个青藏高原自东向西北表现为湿润地区、半湿润地区、半干旱地区和干旱地区的更替与过渡。可可西里地区则居于半干旱地区内。
水分条件是可可西里地区自然地理环境分异的首要因素,决定着本区宏观分异特征。而水分条件主要取决于本地区所处的大气环流位置。本区水汽主要来源于印度洋孟加拉湾。水汽输送方向自东南向西北。天然降水自东南向西北减少,从500毫米左右逐渐降至不足200毫米。干湿分异的最终结果是:乌兰乌拉山北翼为本区最湿润的区域,整个地区自东南向西北变干。就山体而言,作为迎风坡的大阳坡,降水要比背风坡(大阴坡)多。具体至一定的山段,阴坡比阳坡表现的要湿润一些,阴坡的植被发育相对较好。随着海拔升高,温度降低,降水增加,高寒草甸或高寒草原逐渐被以稀疏状植被为主要特征的亚冰雪带所替代,在一些极高山区发育了多年积雪和冰川。本区的地表物质也是自然环境分异的重要因素。本区大部分地面都覆盖着一定厚度的沙层。它可以使天然降水或融水很快渗入下层,保存起来。由于沙层阻隔,土壤下层水分蒸发微弱,对植被的发育有利。以青藏苔草为主的高寒草原广泛分布为主导地理景观,而针茅草原景观仅出现在局部地方。覆沙层与青藏苔草的这种紧密关系在整个青藏高原北部高寒草原、高寒荒漠草原和高寒荒漠地带内都存在。因而从宏观上看,覆沙层的存在减弱了自然环境的空间变异性。但从局部地区来看,它却增加了自然环境的复杂性。
可可西里地区河滩地面积比例较大,受到当地大气候条件的影响,形成隐域半隐域景观,这是区域性因素作用的结果,打乱和干扰了高原地带性景观的连续分布。在一些湖边盐分含量较高的地方,往往形成特别干燥的生境,发育了局部性的垫状驼绒藜高寒荒漠。这是地方性非地带性因素作用的结果。
可可西里地区地域分异规律是在上述各种分异因素共同作用下形成的;(1)与整个青藏高原自东南向西北逐渐变干的总体趋势相适应,青海可可西里地区自然地理景观自东南向西北表现为高寒草甸——高寒草原——高寒荒漠草原的过渡;(2)高寒草原是可可西里地区主要的景观生态类型,分布广阔。高寒草甸仅有零星分布,在具体地段上草甸呈斑状分布,有时与小灌木(金露梅)共同构成灌从草甸景观;高寒荒漠草原则仅分布在本区西部和西北部的部分地区;(3)高寒草原带内发生分化,典型的针茅高寒草原分布面积很小。扇穗茅高寒草原以东北——西南呈长条形分布在局部区域。(4)作为垂直带的高寒草甸仅出现在高寒草原带南部较高山地的阴坡、半阴坡,多呈斑状分布。出现的海拔高度自东南向西北升高,从4800米上升到5200米左右。(5)区内景观的垂直分化明显但简单。主要有3个带谱类型:a、高寒半湿润类型(高寒草甸带——亚冰雪带——冰雪带);b、高寒半湿润/半干旱类型(高寒草原带——高寒草甸带——亚冰雪带——冰雪带);c、高寒半干旱类型(高寒草原带——亚冰雪带——冰雪带)。
可可西里是我国目前建立保护区的任务是开展科学研究,保护和恢复原始生态,恢复珍稀野生动物种群。主要青海可可西里地区国家一级保护动物5种,即雪豹、
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