陕西秦岭的东段呈手指状，向东南展开。从北向南依次是：太华山、蟒岭、流岭、鹘岭和新开岭，海拔均在1500——2500米；南洛河、丹江及其支流银花河分布其间，成为山河相间的岭谷地形。秦岭主脊草链岭和太华山，是丹江、南洛河以及秦岭东段北坡山涧溪流的分水岭与发源地。
三、秦岭在我国气候和地理区划中的重要位置
秦岭不仅是我国南北两大水系——长江河黄河的分水岭，在地形上成为我国南北之间的屏障，在气候上也有十分显著的影响，它使潮湿的海洋气团不易深入到西北；同时也阻挡了北方的寒潮不致长驱南下，减小寒潮猛烈的侵袭，成为我国亚热带和暖温带的分界线。秦岭以北属暖温带气候，秦岭以南属亚热带气候，而且这种气候特征非常明显。
秦岭为陕西省南北气候的自然分界线，也是我国南北方的分界线。它大体与一月零度等温线、800毫米等雨量线及2000小时日照时数等值线一致。秦岭以南，太阳辐射较少，气温较高，降水较多，气候湿润；秦岭以北则相反。秦岭山地，相对高差大，气候垂直分异明显。秦岭南坡全年总辐射约1100千卡／厘米2?年，日照时数约1750小时，日照百分率不足40％。初霜日起始于10月底到11月初，终霜日为3月中旬，无霜期210天左右。海拔高度800—2000米之间为低中山和谷地平坝，年平均气温9—13℃，一月平均气温-3—0℃，七月平均气温22—24℃，年降水量850—900mm，气候比较湿润，适于林木和果树生长。2000m以上的中高山地带，年均温在9℃以下，一月均温小于-3℃，七月均温小于22℃，≧10℃积温小于3500℃，年降水量900—950mm，气候湿润寒冷，其中2500m以上，5月尚可降雪，表现出冷湿的气候特点。秦岭北坡1300m以下为暖温带气候，年均温8.7—12.7℃，≧10℃积温3200—4000℃，1月均温-7℃—2℃，7月均温20—23℃，霜期10月上旬至翌年3月下旬，年降水量650—800mm；1300—2600m为温带气候，年均温1.7—8.7℃，≧10℃积温1950—3500℃，≦0℃低温日数140—150天，绝对低温-12— -25℃，霜期9月下旬至翌年5月上旬，年降水量900—1000mm；2600—3350m为寒温带气候，年均温-2.1—1.8℃，≦0℃低温日数150—200天，绝对低温-20— -25℃，霜期9月中旬至翌年5月下旬，年降水量800—900mm；3500—3767m为亚寒带气候，年均温-4.4— -2.1℃，绝对低温-30℃，霜期8月下旬至翌年6月下旬，年降水量750—800mm。
在动物地理区划上，秦岭是古北界和东洋界的分界线。（古北界包括欧洲、北回归线以北的非洲与阿拉伯半岛的大部分、喜马拉雅山－秦岭山脉以北的亚洲大陆；东洋界包括中国秦岭山脉以南地区、印度半岛、终南半岛、马来半岛以及斯里兰卡、菲律宾群岛、苏门答腊、爪哇和加里曼丹等大小岛屿。）秦岭北坡属于古北界，南坡属于东洋界。因此，秦岭的许多动植物都兼具有古北界和东洋界的特征。
高山冰瀑
紫荆花
太白山樱花
杜鹃花
百花盛开
花香
槐花
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密枝杜鹃
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