CAJ | 학술논문

对香格里拉县境内3个省级自然保护区的植物资源进行系统调查，统计所建立的该区植物数据库，建立数字 DEM高程模型并结合物种海拔分布特征，分析香格里拉县种子植物垂直分布格局。结果表明：该区有野生种子植物163科876属3794种；科、属、种的丰富度和种的密度随海拔上升均呈现单峰格局，且丰富度和密度的海拔梯度格局基本保持一致；科和属的丰富度和物种密度最大值的位置偏向于低海拔区域（海拔1900～2200 m），种的最大值则出现在中海拔区域（海拔3100～3400 m）；物种丰富度垂直分布格局的形成与海拔所反映的水、热状况以及物种分布的界限有关，并受到“中间膨胀效应”的影响；种子植物属中北温带成分，且是香格里拉县的主要区系类型，所占比例随海拔上升而增大，而热带属比例则下降，约在海拔1750 m 处出现区系平衡点。
대향격리랍현경내3개성급자연보호구적식물자원진행계통조사，통계소건립적해구식물수거고，건립수자 DEM고정모형병결합물충해발분포특정，분석향격리랍현충자식물수직분포격국。결과표명：해구유야생충자식물163과876속3794충；과、속、충적봉부도화충적밀도수해발상승균정현단봉격국，차봉부도화밀도적해발제도격국기본보지일치；과화속적봉부도화물충밀도최대치적위치편향우저해발구역（해발1900～2200 m），충적최대치칙출현재중해발구역（해발3100～3400 m）；물충봉부도수직분포격국적형성여해발소반영적수、열상황이급물충분포적계한유관，병수도“중간팽창효응”적영향；충자식물속중북온대성분，차시향격리랍현적주요구계류형，소점비례수해발상승이증대，이열대속비례칙하강，약재해발1750 m 처출현구계평형점。
The database of plant species was built based on the systematic survey of three provincial level na-ture reserves in Shangri-la County,and the altitudinal distribution pattern of seed plant species in the county was studied by means of establishing the DEMdigital elevation model integrated with the elevation distribution feature of the plant species.The results showed that there were 3 794 species belonging to 876 genera and 163 families of wild seed plants in Shangri-la County.The richness and density of the species,genera and families all showed the single-peak curve along with the elevation increment.There were principal consistences between the change in rich-ness and density of the species,genera and families with the altitude variation.The maximum values of species density,the richness of genera and families appeared at lower altitude around 1 900 -2 200 m range,whereas the maximum value of species richness appeared at mid altitude range of 3 100 -3 400 m.The formation of vertical dis-tribution pattern of species richness was related to water and heat conditions,and the boundaries of species distribu-tion that were all reflected by the altitude,and also affected by the “middle expansion effect”.As seed plants are the composition of Mid-North Temperate Zone,and the major floristic type of Shangri-la County,the proportion of north temperate elements was increased with the increment of altitude,whereas the proportion of tropical elements was decreased.There was a floristic balance point around 1 750 m in elevation.