生物多样性 ›› 2018, Vol. 26 ›› Issue (2): 191-201. DOI: 10.17520/biods.2017324
所属专题: 青藏高原生物多样性与生态安全
胡一鸣1,2,3, 梁健超3,4, 金崑5, 丁志锋3, 周智鑫3, 胡慧建3,*, 蒋志刚1,2,*
收稿日期:
2017-12-06
接受日期:
2018-01-26
出版日期:
2018-02-20
发布日期:
2018-05-05
通讯作者:
胡慧建,蒋志刚
作者简介:
# 共同第一作者
基金资助:
Yiming Hu1,2,3, Jianchao Liang3,4, Kun Jin5, Zhifeng Ding3, Zhixin Zhou3, Huijian Hu3,*, Zhigang Jiang1,2,*
Received:
2017-12-06
Accepted:
2018-01-26
Online:
2018-02-20
Published:
2018-05-05
Contact:
Hu Huijian,Jiang Zhigang
About author:
# Co-first authors
摘要:
生物多样性的空间分布及其相关机制一直是生态学、生物地理学和保护生物学研究的热点问题。山地生态系统生境异质性和生物多样性高, 适合研究生物多样性空间分布及其相关机制。喜马拉雅山脉位于青藏高原南缘, 是全球生态热点区域。其地形复杂, 海拔落差大(100-8,844 m), 具有明显的垂直气候带。本研究通过整合野外调查和文献资料, 系统地分析了10目23科160属313种喜马拉雅山地区哺乳动物物种多样性的垂直分布格局, 发现该区域哺乳动物总体及其子集的物种多样性垂直分布格局都为左偏倚的中峰格局, 物种多样性在海拔900-1,400 m之间最高, 不同物种子集的物种多样性垂直分布格局的模式有所不同。UPGMA聚类分析表明, 喜马拉雅山地区哺乳动物群落沿海拔梯度可以划分为5个聚类簇(海拔100-1,500 m、1,500-2,000 m、2,000-3,000 m、3,000-4,200 m以及4,200-6,000 m的地区), 大致与该地区植被的垂直带分布相吻合。喜马拉雅山地区哺乳动物物种多样性在中低海拔最为丰富, 可能跟东洋界与古北界生物群扩散后的交汇地带相关。喜马拉雅山区贯通南北的沟谷是生物扩散和迁移的通道, 沟谷内水热资源较好, 气候稳定性高, 为高山生态系统内各种生物创造了栖息条件。综上, 喜马拉雅山沟谷地区是生物多样性热点地区, 也是生物扩散和交流关键的“生态走廊”, 应加强对喜马拉雅山沟谷地区的保护, 以维系该区域较高的生物多样性。
胡一鸣, 梁健超, 金崑, 丁志锋, 周智鑫, 胡慧建, 蒋志刚 (2018) 喜马拉雅山哺乳动物物种多样性垂直分布格局. 生物多样性, 26, 191-201. DOI: 10.17520/biods.2017324.
Yiming Hu, Jianchao Liang, Kun Jin, Zhifeng Ding, Zhixin Zhou, Huijian Hu, Zhigang Jiang (2018) The elevational patterns of mammalian richness in the Himalayas. Biodiversity Science, 26, 191-201. DOI: 10.17520/biods.2017324.
图1 喜马拉雅山脉-青藏高原地理位置和地形图。带阴影虚线内为研究区域, 黑色虚线为西、中以及东喜马拉雅山的分界线。黑色圆点代表本研究的野外调查区域, 从左到右分别为: 吉隆县、聂拉木县、定日县、定结县、亚东县、洛扎县、错那县和隆子县。NP: 南迦帕尔巴特峰; NB: 南迦巴瓦峰。
Fig. 1 Generalized topographic map of the Himalaya Mountains and Tibetan Plateau. The black dashed lines with shadow represent boundaries of the study area. Black dashed lines represent boundaries between the western, central, and eastern Himalaya Mountains. Black dots represent field survey areas, from left to right are: Gyirong County, Nyalam County, Tingri County, Dinggyê County, Yadong County, Lhozhag County, Cona County and Lhünzê County, respectively. NP, Nanga Parbat; NB, Namche Barwa.
图2 喜马拉雅山地区哺乳动物不同子集物种多样性垂直分布格局。 a: 哺乳动物总体; b: 特有种; c: 非特有种; d-g: 垂直分布幅一组、二组、三组和四组。
Fig. 2 Elevational patterns of mammal species richness for different distribution range subsets in the Himalaya Mountains. a, All mammals; b, Endemic mammals; c, Non-endemic mammals; d-g, Mammals in the first, second, third and fourth range size classes, respectively.
图3 喜马拉雅山地区哺乳动物不同习性与体型子集物种多样性垂直分布格局。a: 总体; b: 飞行哺乳动物(翼手目); c: 非飞行哺乳动物; d: 非飞行小型哺乳动物; e: 非飞行大中型哺乳动物。
Fig. 3 Elevational patterns of mammal species richness for different biological habits and body size subsets in the Himalaya Mountains. a, All mammals; b, Chiroptera; c, Non-volant mammals; d, Non-volant small mammals; e, Non-volant large and medium mammals.
物种分组 Species groups | 物种数 Number of species | 一阶 Order 1 | 二阶 Order 2 | ||
---|---|---|---|---|---|
R2 | ∆AICc | R2 | ∆AICc | ||
总体 All mammals | 312 | 0.8772 | 12,550 | 0.9215 | 0 |
特有种 Endemic mammals | 72 | 0.2935 | 5,236 | 0.7948 | 0 |
非特有种 Non-endemic mammals | 240 | 0.9030 | 1,573 | 0.9102 | 0 |
分布幅一组 First range | 90 | 0.7380 | 1,594.7 | 0.8478 | 0 |
分布幅二组 Second range | 153 | 0.8287 | 3,201.6 | 0.8726 | 0 |
分布幅三组 Third range | 58 | 0.6379 | 5,977 | 0.8482 | 0 |
分布幅四组 Fourth range | 11 | 0.3018 | 356.537 | 0.9289 | 0 |
飞行哺乳动物 Chiroptera | 80 | 0.8075 | 1,995.6 | 0.8675 | 0 |
非飞行哺乳动物 Non-volant mammals | 232 | 0.7592 | 24,569 | 0.9254 | 0 |
非飞行小型哺乳动物 Non-volant small mammals | 127 | 0.6295 | 9,999.2 | 0.8751 | 0 |
非飞行大中型哺乳动物 Non-volant large and medium mammals | 105 | 0.8619 | 3,453.9 | 0.9557 | 0 |
表1 喜马拉雅山地区哺乳动物不同子集的物种多样性沿海拔梯度的多项式回归
Table 1 Polynomial regressions for the mammal species richness along the elevational gradients in the Himalaya Mountains for each species subsets
物种分组 Species groups | 物种数 Number of species | 一阶 Order 1 | 二阶 Order 2 | ||
---|---|---|---|---|---|
R2 | ∆AICc | R2 | ∆AICc | ||
总体 All mammals | 312 | 0.8772 | 12,550 | 0.9215 | 0 |
特有种 Endemic mammals | 72 | 0.2935 | 5,236 | 0.7948 | 0 |
非特有种 Non-endemic mammals | 240 | 0.9030 | 1,573 | 0.9102 | 0 |
分布幅一组 First range | 90 | 0.7380 | 1,594.7 | 0.8478 | 0 |
分布幅二组 Second range | 153 | 0.8287 | 3,201.6 | 0.8726 | 0 |
分布幅三组 Third range | 58 | 0.6379 | 5,977 | 0.8482 | 0 |
分布幅四组 Fourth range | 11 | 0.3018 | 356.537 | 0.9289 | 0 |
飞行哺乳动物 Chiroptera | 80 | 0.8075 | 1,995.6 | 0.8675 | 0 |
非飞行哺乳动物 Non-volant mammals | 232 | 0.7592 | 24,569 | 0.9254 | 0 |
非飞行小型哺乳动物 Non-volant small mammals | 127 | 0.6295 | 9,999.2 | 0.8751 | 0 |
非飞行大中型哺乳动物 Non-volant large and medium mammals | 105 | 0.8619 | 3,453.9 | 0.9557 | 0 |
图4 基于喜马拉雅山各海拔区间βsim相异性矩阵的UPGMA聚类树图。聚类指数为0.993。X-轴为各100 m海拔区间的编号, 例如“1”代表了100-200 m海拔区间, Y-轴为βsim指数的值。不同颜色的聚类分簇代表了不同的分组。
Fig. 4 Dendrograms resulting from UPGMA hierarchical clustering of 100 m elevational band assemblages based on βsim dissimilarity matrices for mammal species richness along the elevational gradient in the Himalayas. The agglomerative coefficient is 0.993. The numerals of x-axis represent the 59 100 m elevational bands. For example, “1” means 100-200 m a.s.l. The values of y-axis are dissimilarity (βsim). Cluster leaves of different colors represent different cluster assignments.
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