摘要
以张家界国家森林公园内龙虾花种群为研究对象,设置永久性调查样地,研究游憩活动对龙虾花株数、植株平均高度和平均盖度等生长指标的影响。结果表明:随着游憩活动频度的增加,龙虾花种群植株数、平均高度和平均盖度整体上呈现下降趋势。对照样方中的各草种种群则表现一定的稳定性,且存在着显著的种间竞争,冷水花和龙头草等草种表现了明显的竞争优势,在一定程度上对其他草种构成了生存胁迫,这也是龙虾花种群逐步衰退的原因之一。
The author chose Impatiens davidi Franch population in Zhangjiajie National Forest Park,set up permanent survey sample plot,studied impact of soil physical and chemical properties and changing law of individual number,average height and coverage caused by forest tourism.The results showed：along with the increase of recreational activities frequency,number,average height and average coverage of Impatiens davidi Franch population had declined whole,Pilea microphylla（L.） Liebm and Meehania henryi（Hemsl.） had clearly competitive advantage,to a certain extent,caused the stress of survival to other species,this also was one of the reasons why Impatiens davidi Franch gradually recession for the population.
出处
《中国农学通报》
CSCD
2012年第25期97-100,共4页
Chinese Agricultural Science Bulletin
基金
湖南省张家界市科学技术局重点项目"生物多样性监测与保育研究"(2010ZD020)
关键词
森林旅游
生长指标
种群分布
种群衰退
forest tourism
growth index
species distribution
population recession
