旅游干扰下五台山南台山地草甸的种间关系

The interspecific relationship of meadow population on the south top of Wutai Mountain with tourism disturbance

以五台山南台北方嵩草草甸为例,利用Pearson和Spearman相关性分析,探讨旅游干扰下草甸不同种群的种间关系以及服务景区植被生态恢复。结果表明:同一距离带上,草甸种群种间关系均表现出正相关性,表明其对旅游干扰有相似抗性,且距离愈近,植物种抗性愈强;距离愈远,植物种抗性愈弱。依据不同距离带上Pearson和Spearman相关性分析,17个种群被分为4个生态种组:第1组包括铃铃香青、歪头菜、小红菊和蓝花棘豆;第2组包括北方嵩草、地榆、小花草玉梅、雪白委陵菜、葛缕子和紫苞风毛菊;第3组有紫羊茅和扁蓄;第4组有珠芽蓼、车前、秦艽、斗蓬草和白缘蒲公英。就植物种抗性而言,第3组最强,第1组最弱。优势种群生态抗性由强到弱为紫羊茅、珠芽蓼、北方嵩草,表明北方嵩草草甸急需保护。Spearman相关分析灵敏度高于Pearson,且经前者分析的具有相关性的种对数目高于后者。

The meadow of Kobresia bellardii in the south top of Wutai Mountain was researched in the paper by Pearson and Spearman correlation analysis, and the interspecific relationship of different meadow population under tourism disturbance was discussed for vegetation restoration in scenic spot. The results showed that the positive correlation was showed among interspecific relationships of meadow populations at the same distance belt, which indicated that these plant species had the same ability of anti-tourism disturbance. The closer the distance was from parking lot, the stronger the resistance of plant species was, and the further the distance was, the weaker the resistance of plant species was. According to the results of Pearson and Spearman correlation analysis at different distance belts, 17 populations were divided into four ecological species groups. The first species group includes Anaphalis hancockii, Vicia unijuga, Dendranthema chanetii and Oxytropis caerulea whose ability of anti-tourism disturbance was the worst. The second species group includes Kobresia bellardii, Sanguisorba officinalis, Anemone rivularis var. flore-minore, Potentilla nivea, Carum carvi and Saussurea purpurascens. The third species group includes Festuca rubra and Polygonum aviculare whose ability of anti-tourism disturbance was the strongest. The fourth species group includes Polygonum viviparum, Plantago asiatica, Gentiana macrophylla, Alchemilla japonica and Taraxacum platypecidum. The resistance of dominant plant population from strong to weak against tourism disturbance was Festuca rubra , Polygonum viviparum, Kobresia bellardii, which indicated that the meadow of Kobresia bellardii should be protected. Comparing the two results of Pearson and Spearman correlation analysis, it could be seen that the number of correlative species pair was much lower in the former than that in the latter, which indicated a higher sensitivity by Spearman.