基于Ripley's K的沙漠腹地达理雅博依绿洲胡杨种群空间格局研究  

A Ripley s K Function-Based Study of the Spatial Pattern of Populus euphratica Population in Daliyaboyi Oasis in Desert Hinterland

作　　者：宁默 李娜[2,3,4] 师庆东 郭玉川[2,3,4] NING Mo;LI Na;SHI Qing-dong;GUO Yu-chuan(Xinjiang Water Conservaney and Hydropower Survey,Design and Research Institute,Ministry of Water Resources,Urumqi 830046,China;School of Resources and Environment Science,Xinjiang University,Urumqi 830046,China;Key Laboratory of Oasis Ecology of Ministry of Education,Urumqi 830046,China;Institute of Arid Ecology and Environment,Xinjiang University,Urumqi 830046,China)

机构地区：[1]水利部新疆水利水电勘测设计研究院,乌鲁木齐830046 [2]新疆大学资源与环境科学学院,乌鲁木齐830046 [3]新疆绿洲重点实验室,乌鲁木齐830046 [4]新疆大学干旱生态环境研究所,乌鲁木齐830046

出　　处：《西南大学学报（自然科学版）》2020年第12期73-82,共10页Journal of Southwest University(Natural Science Edition)

基　　金：国家自然科学基金联合重点支持项目(U1703237).

摘　　要：达理雅博依是塔克拉玛干沙漠腹地独特的天然绿洲,但在克里雅河上游修建吉音水库后,其独特的种群格局可能会发生改变.因此,为了探明绿洲内胡杨种群的空间格局及其影响因素,选用Ripley s K模型,对绿洲中20个乔木样方无人机遥感图像解译的结果进行分析,同时再结合3个地面样方的实测数据,分析绿洲内胡杨种群的动态与空间格局,结果表明,绿洲内胡杨种群生长具有较强的空间异质性,地表水和地下水共同控制胡杨种群的格局分布,在地下水埋深3~5 m区域生长的胡杨大多呈现随机分布,生长情况较好,多为增长型种群;绿洲由南向北为随机—聚集—随机分布,由西向东为随机—聚集分布;绿洲北部与东部的胡杨种群表现出逐渐衰退的趋势,而绿洲中部、西部胡杨种群出现更新增长的态势.In order to find out the spatial pattern of Populus euphratica population in Daliyaboyi oasis and the influence of water resource allocation on its spatial pattern,Ripley s K function was used to analyze the results of UAV remote sensing image interpretation of 30 arbor quadrats in the oasis.At the same time,the population dynamics and spatial pattern of P.euphratica population in the oasis were analyzed based on the measured data of three ground survey quadrats.The results are as follows:P.euphratica population growth in the oasis has strong spatial heterogeneity,surface water and groundwater control the distribution of P.euphratica population pattern,most of P.euphratica population growing in the area with groundwater depth of 3~5 m presents a random distribution,with good growth conditions,and most of them are of the increasing type.A pattern of random-aggregation-random distribution is presented from south to north in the oasis,and a pattern of random-aggregation distribution is presented from west to east.On the whole,the population shows a dynamic trend of moving from north to south and from east to west.

关 键 词：胡杨 种群 空间格局 种群动态 

分 类 号：Q145.1[生物学—生态学]