中国金缕梅科植物属的空间多样性定量研究  

Quantitative Analysis of Spatial Diversity in Genera of the Hamamelidaceae in China

作　　者：王建 邱丽氚 岳晓英 Wang Jian;Qiu Lichuan;Yue Xiaoying(School of Geographical Sciences,Taiyuan Normal University,Jinzhong 030619,China)

机构地区：[1]太原师范学院地理科学学院,山西晋中030619

出　　处：《中国野生植物资源》2022年第2期89-96,共8页Chinese Wild Plant Resources

基　　金：国家自然科学基金项目(41801016,41071335)。

摘　　要：以行政县为单元,利用ArcGIS软件制作中国金缕梅科(Hamamelidaceae)植物的空间分布图,量测其经纬度并计算空间多样性格局指数,定量地获取中国金缕梅科植物属的空间多样性的格局及特点,为金缕梅科植物的保护、管理和利用提供依据。结果表明:(1)中国金缕梅科植物属的空间多样性南高北低,在纬度方向上呈三条垂直带状分布,从贵州东部、湖南西部向北经重庆东部、湖北西部进入陕西南部、河南西部的属数量较多,主要在25°16′N~33°02′N、107°02′E~111°24′E;(2)在经度方向上,贵州东南部、湖南、江西、福建三省的南部与广西、广东两省区北部的省界处,在23°59′N~26°27′N、107°39′E~117°35′E属数量较多,形成明显水平带状分布,是金缕梅科植物属多样性中心,从水平带沿着三条垂直带向北延伸;(3)特有属植物在北亚热带和南亚热带呈两条明显水平分布带,前者主要在29°44′N~33°27′N、104°38′E~121°9′E,后者主要在23°16′N~27°15′N、107°42′E~119°45′E;(4)从多样性指数来看,当属的数量为1时,其所占类型面积、占景观面积的比例、斑块个数、最大斑块指数和景观形状指数的值均最大,随属的数量增加,多样性明显提高,但其各项指标总体呈逐渐降低的趋势。Based on the administrative county as a unit,the spatial distribution diversity of genera in the Hamamelidaceae in China were studied quantitatively in ArcGIS software,with the spatial distribution maps,the latitude and longitude determined from maps and indices of diversity patterns calculated.It provided the basis for the protection,management and utilization of the Hamamelidaceae.Results showed that(1)Distribution of spatial diversity in all genera of the Hamamelidaceae in China shows a decreasing trend from south to north.It is in three vertical zones in the direction of latitutude.There are many genera from the south in the east of Guizhou and the west of Hunan to the north in the south of Shaanxi and the west of Henan through the east of Chongqing and the west of Hubei.It is mainly in 25°16′N-33°02′N,107°02′E-111°24′E and an important distribution area of genera of the Hamamelidaceae.(2)In the direction of longitude,the provincial boundary between the southeast of Guizhou,the south of Hunan,Jiangxi,Fujian and the north of Guangxi and Guangdong forms an obvious horizontal zone with the largest number of genera.It is mainly in 23°59′N-26°27′N,107°39′E-117°35′E.The center of genera diversity of the Hamamelidaceae is in horizontal zone and three vertical zones.It extends from the south in horizontal zone to the north along the three vertical zones.(3)There are two obvious horizontal zones of endemic genera which are the north subtropical zone and the south subtropical zone.The former is mainly in 29°44′N-33°27′N,104°38′E-121°9′E.The latter is mainly in 23°16′N-27°15′N,107°42′E-119°45′E.(4)When the number of genera was 1,the diversity index including the total area,percentage of landscape,number of patches,largest patch index and landscape shape index were maximum.When the number of genera increased,the diversity obviously increased.Those indices gradually decreased with number.

关 键 词：金缕梅科 属 空间多样性格局 ARCGIS 中国 

分 类 号：Q948.2[生物学—植物学]