腾格里沙漠红卫地区固定沙丘上固沙灌木种群空间分布格局与空间关联性研究  

Spatial patterns and correlations of sand-fixing shrub populations on fixed dune in Tengger Desert

作　　者：韩以晴 张定海[1] 张志山 HAN Yiqing;ZHANG Dinghai;ZHANG Zhishan(Center for Quantitative Biology,College of Science,Gansu Agricultural University,Lanzhou 730000,China;Shapotou Desert Research and Experimental Station,Northwest Institute of Eco-Environment and Resources,CAS,Lanzhou 730000,China)

机构地区：[1]甘肃农业大学理学院数量生物研究所,兰州730070 [2]中国科学院西北生态环境资源研究院沙坡头沙漠研究试验站,兰州730000

出　　处：《干旱区资源与环境》2022年第3期157-165,共9页Journal of Arid Land Resources and Environment

基　　金：甘肃省自然科学基金项目(21JR7RA831);国家自然基金项目(41661022);甘肃农业大学盛彤笙创新基金(GAU-CX1121)资助。

摘　　要：种群空间分布格局和关联性的研究对预测群落演替趋势和植被重建具有重要意义。基于腾格里沙漠天然植被区红卫地区固定沙丘上三种优势半灌木或灌木种群(油蒿(Artemisia ordosica)、柠条(Caragana korshinskii)和驼绒藜(Ceratoides latens))个体的位置和生长发育阶段信息,研究了三个种群的空间分布格局及种群之间和不同生长发育阶段个体之间的空间关联性。结果表明:1)三个优势种群以及种群中不同生长发育阶段的个体的空间格局均呈小尺度上聚集大尺度上随机分布的特征。2)油蒿和柠条在3~8m尺度上与驼绒藜呈现负关联,在其他尺度上3个种群之间均呈现无关联。3)不同生长阶段的油蒿在小尺度上呈现不同的关联状态,柠条和驼绒藜的营养株和生殖株之间在任何尺度,的营养株和生殖株在小尺度下与驼绒藜的营养株和生殖株呈现负关联。研究结果可为该地区人工植被的演替和植被生境适应性的研究提供一定理论依据。The study of spatial distribution pattern and correlations of population is of great significance for predicting population succession trend and vegetation reconstruction.Based on the location and growth and development stage information of the individuals of the three dominant semi-shrub or shrub population(Artemisia ordosica,Caragana korshinskii and Ceratoides latens)in the natural vegetation area of the Tengger Desert,we studied the spatial distribution pattern of the three populations and the spatial associations between populations and individuals at different growth and development stages.The results showed that:1)The spatial pattern of the three dominant populations and the individuals in different growth stages of the population showed aggregation distribution on small scale and random distribution on large scale.2)Artemisia ordosica and Caragana korshinskii showed negative correlation with Ceratoides latens populations at the scale of 3~8 m,while there was no correlation between populations at other scales.3)Artemisia ordosica at different growth stages showed different correlation states at small scale,the trophic and reproductive strains of Caragana korshinskii showed negative associations with the trophic and reproductive strains of Ceratoides latens at small scales.The research results can provide some theoretical basis for understanding the succession of artificial vegetation and vegetation habitat adaptability in this area.

关 键 词：腾格里沙漠 空间分布格局 空间关联性 生长发育阶段 

分 类 号：Q145[生物学—生态学]