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基于2×2联列表,应用方差比率(VR)、卡方(χ2)检验、联结系数(AC)等指标对野生早樱群落中乔木层10个优势种群的种间联结性进行了研究。结果表明:10个优势乔木种群总体呈负的净关联;x2检验表明仅有4个种对表现为显著正联结,3个种对表现为有一定联结性;VR、χ2检验、AC3个参数计算的结果都较为一致,验证了该群落种对间独立性相对较强、相关性较弱的特点。现阶段,该群落种间联结性较为松散或呈负联结状态,一方面与群落所处次生演替初期有关,另一方面可能与各种群生物学特性有关。研究结果对野生早樱制定合适的保护与利用计划具有一定的科学参考价值。
Based on the 2 × 2 cohort, the interspecific association of ten dominant tree species in the early cherry population was studied using variance ratio (VR), chi-square test (χ2) and linkage coefficient (AC). The results showed that there was a negative net correlation of 10 dominant tree populations; x2 test showed that only 4 species showed significant positive association and 3 species showed certain connectivity; VR, χ2 test and AC3 parameters The results are more consistent, verifying the community of relatively strong independence between the characteristics of weak correlation. At this stage, interspecific association is loose or negatively linked, which is related to the initial stage of secondary succession of the community and may be related to the biological characteristics of each group. The results of this study have certain scientific reference value for the development of proper plan for conservation and utilization of wild cherry trees.