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出 处:《中药材》2013年第12期1914-1917,共4页Journal of Chinese Medicinal Materials
基 金:陕西省科技厅农业攻关项目(2012.k02-10);陕西省大学生创新企业训练计划项目(1252);陕西省高水平大学建设专项资金生态学(2012SXTS03)
摘 要:目的:了解延安地区东亚钳蝎种群数量消长和野外空间分布情况。方法:每月1、10、20日定点采集东亚钳蝎样本,采用扩散型指标、Taylor幂法则及Lwao m-珋回归对采集量进行计数。结果:Taylor幂法则回归方程式为:lgS2=1.6671 lg+0.1554;Lwaom-回归方程式为:m=1.3179+1.5133。东亚钳蝎空间分布型为负二项分布,在野外种群消长曲线呈单峰型。结论:延安地区东亚钳蝎空间格局是以个体群为基本成分呈聚集分布,且密度越高,聚集度越大。Objective: To study population dynamics of Buthus martensii and its wild spatial distribution pattern in Yan'an. Methods: Every month,the 1st,10th and 20th day were designated to collect Buthus martensii samples and count on the collection by using expansion pattern target,Taylor power law and Lwao m-x regression analysis. Results: Taylor power law regression equation was lg S2= 1. 6671 lg +0. 1554; Lwao m- regression equation was m =1. 3179 +1. 5133. The spatial distribution pattern of Buthus martensii was negative binomial distribution and its population fluctuation curve in the wild presented a single peak. Conclusion: Spatial pattern of Buthus martensii in Yan'an is aggregated distribution which based on individual group,and the higher density,the greater aggregation degree.
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