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[Study on spatial distribution pattern and seasonal distribution of Buthus martensii in yan'an]
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 Ig S2 = 1.6671 lg x + 0.1554; Lwao m-x regression equation was m = 1.3179 + 1.5133x. 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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