鹦哥岭自然保护区药用植物资源种群空间分布特征分析

Spatial Distribution Characteristic of Medicinal Plants Population in Yinggeling Nature Reserve

【目的】为掌握鹦哥岭自然保护区区域药用植物资源种群空间分布特征。【方法】通过样方调查,并利用种群空间分布分析方法对研究区域的药用植物资源种群空间分布特征进行分析。【结果】低海拔A1的药用植物种群资源是趋近随机分布的均匀分布。随着海拔升高,A2、A3以及A43个样地药用植物种群资源具有典型的集群分布特点。鹦哥岭自然保护区番阳片区共有药用植物29科38属46种,分别占总植物科数的61.7%、属的46.9%和种41.4%。低海拔地区药用植物种数比例占植物总数57.4%,科数占植物总科数66.7%,均比高海拔地区药用植物所占比高。物种丰富度随着海拔升高的变化呈现下降-升高-下降的规律。多样性则反之,多样性指数随海拔升高则表现为升高-下降-升高的规律。海拔较高的A4样地物种丰富度较低,但是多样性较高。【结论】鹦哥岭自然保护区番阳片区拥有丰富的药用植物资源,尤其低海拔立地条件较好的地段拥有更加多样的药用植物,但低海拔热带林更容易受干扰和破坏,需要给予更多的关注和更大的保护力度。

【Objective】 The present paper aimed to know the spatial distribution characteristic of medicinal plants population in this research area.【Method】The spatial distribution characteristic of medicinal plant population was analyzed by quadrat survey and the method of population spatial distribution analysis.【Result】We had obtained the results that the medicinal plant population located in the low altitude not only followed uniform distribution but also approached random distribution. The remain of 3(A2,A3,A4) sample plots had the typical clumped distribution characteristic with the altitude increasing. The number of species about medicinal plant accounted for 41.4 % of the total plant species in the Fanyang district, and the genuses and families were 46.9 % and 61.7 % respectively. The numbers of species of medicinal plant grew in the low altitude counted for 57.4 % of the total plant species, and the numbers of families was 66.7 % as well, the number of species and families in the low altitude was higher than that in the higher altitude in the research area. The changing rule of species richness followed the sequence as decline-rise-decline with the altitude increasing, and the diversity index followed the sequence as rise-decline-rise with the altitude increasing, it was on the contrary with the species richness exactly.【Conclusion】 As a whole, there was abundant medicinal plant resources in the Fanyang district of Yinggeling nature reserve. Especially the low altitude area which had the better site conditions might have more species of medicinal plant. However, the tropical forestry in the low altitude might be easily destroyed,so we need pay more attentions and protect them.