游憩活动对琅琊山风景区两种草地植物种子发芽率的影响

在琅琊山风景区通过实地实验,分析了游憩活动对琅琊山风景区两种草地植物紫花苜蓿(Medicago sativa L.)和白三叶(Trifolium repens L.)种子发芽率的影响.结果表明:(1)游憩活动强度与两种植物种子发芽率呈负线性相关.近游道、中距离游道和远距离游道的3个实验组,紫花苜蓿种子平均发芽率依次为31.29%、39.41%、55.21%;白三叶依次为8.42%、14.62%、23.89%.距游道越远的实验组种子的发芽率越高,距游道最远的实验组和最近的实验组的种子发芽率差异显著.(2)柏油、水泥、台阶和泥质4种游道实验区的种子平均发芽率,紫花苜蓿依次为37.20%、40.27%、41.28%、48.13%;白三叶依次为10.37%、10.92%、14.23%、27.05%.旅游和游憩活动量较少的游道实验区种子的发芽率高于游憩活动量较大的游道实验区.此外,相同游道、相同实验位置的两种植物种子发芽率亦存在显著差异,表明不同植物种子萌发受到旅游活动的干扰存在差异.

Effects of tourism and recreation on seeds germination rate two herbaceous plants in Langya Mountain scenic area

By experiment and observation on the spot, the impact of tourist and recreational activities on meadow seeds germination rate of Medicago sativa and Trifolium repens in the Langya mountain scenic area was analyzed. The results showed: (1) the seed germination rates of two kinds of plants were negatively linearized a correlated with the strength of tourist and recreational activity. In three tour route experimental groups: the long range, the medium range and the short range, the seed germination rates of Medicago sativa were in sequence of 31.29%, 39.41% and 55.21%, and the rates of Trifolium repens were of 8.42%, 14.62% and 23.89%. The more distant the experimental group is from the tour route, the higher the seed germination rates are. There were significant differences of the rates between the farthest group from the tour route and the nearest one. (2) In four other patterns of the tour route experimental groups: asphalt, cement, step and soil, the seed average germination rates of Medicago sativa were in sequence of 37.20%, 40.27%, 41.28% and 48.13%, and the rates of Trifolium repens were of 10.37%, 10.92%, 14.23% and 27.05%. The seed germination rates of tour route experimental region with less tourism and recreational activities were higher than those of the region with more tourism and recreational activities. Moreover, the seeds germination rates of the two observed plants were significantly different in the same experimental route and place.