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在74条样带436.872hm2面积上进行野外调查,对黑龙江穆棱东北红豆杉自然保护区内天然东北红豆杉种群数量、种群分布与生态因子的相互关系进行了研究。结果表明:在保护区34544hm2范围内天然东北红豆杉种群数量庞大,而且天然东北红豆杉种群的分布对海拔、坡向、坡位和坡度等生态因子具有选择性。700m-800m是种群的最适海拔范围;分布在阴坡的天然种群数量明显高于阳坡;山地的中部和上部更适合东北红豆杉生长;东北红豆杉种群多数分布在坡度15度以下的山地,随着坡度的增加,天然种群的数量明显减少。图3表4参18。
A field survey was conducted on 436.872hm2 area of 74 transects, and the relationship among population, population distribution and ecological factors of Taxus cuspidata in Taxus cuspidatus was studied in the northeast Yew Nature Reserve of Muling, Heilongjiang Province. The results showed that there was a huge population of native Taxus cuspidata in the range of 34544hm2 in the reserve, and the population distribution of Taxus cuspidata was selective to ecological factors such as elevation, aspect, slope position and slope. 700m-800m is the most suitable range for the population; the natural population distributed in the shady slope is obviously higher than the sunny slope; the middle and upper part of the mountain are more suitable for the growth of Taxus cuspidata; the population of Taxus cuspidata is mostly distributed in the mountain With the increase of slope, the population of natural population decreased obviously. Figure 3 Table 4 Reference 18.