摘要
为揭示不同植被下草本植物群落与环境因子的关系,本研究采用双向指示种分析(TWl NSPAN)、除趋势对应分析(DCA)、丰富度指数(Pa)、多样性指数(H'、DS)和均匀度指数(JP)方法,对安太堡露天煤矿区排土场复垦地不同植被下草本植物群落进行了数量分类、排序及物种多样性研究。结果显示:(1)TWl NSPAN等级分类将其63个样方划分为11个草本植物群丛,分别位于该矿区复垦地不同植被类型下;(2)DCA第一轴反映了植被恢复年限的梯度变化,沿第一轴从左到右,11个草本植物群丛的恢复年限逐渐缩短;DCA第二轴反映了排土场复垦地地形的梯度变化,沿第二轴从下到上,地形从平台→东北坡,11个草本植物群丛的物种多样性降低;(3)随着植被恢复年限的增长,11个草本植物群丛物种多样性从高到低的变化为:平台>东北坡,乔木林下>灌丛林下>草地。研究表明,植被恢复年限、植物种类和地形是影响安太堡露天煤矿区复垦地不同植被下11个草本植物群丛结构和物种多样性的关键因子。
To reveal the relationship between herbaceous plant communities and environmental factors underdifferent plantations, in this paper, the quantitative classification, ordination and species diversity ofherbaceous plant communities under different plantations on the reclaimed dumps in Antaibao opencast coalmining area of Shanxi were conducted by using the methods of Two-way Indicator Species Analysis（TWINSPAN）, Distended Correspondence Analysis（DCA）, Richness Index（Pa）, Diversity Index（H＇, DS） andEvenness Index（JP）. The results showed that：（1） 63 quadrats were classified into 11 herbaceous plantcommunities（associations） under different plantations on the reclaimed dumps by TWINSPAN;（2） the firstDCA axis represented a gradient change of revegetation age, namely, the revegetation age of the 11 herbaceousplant communities gradually decreased from left to right along the first DCA axis; the second DCA axisreflected a gradient change of the terrain on the reclaimed dumps, namely, the terrain shifted from platform tonortheast slope and species diversity of the 11 herbaceous plant communities gradually decreased along the second DCA axis from bottom to top;（3） with the increase of revegetation age, the four species diversity indices ofthe 11 herbaceous plant communities under different plantations gradually decreased from platform to northeastslope and from arbor plantations to shrub and herbs plantations. The results showed that the revegetation age,plant species and terrain were the key factors to affect the structure and diversity of the 11 herbaceous plantcommunities under different plantations on the reclaimed dumps in Antaibao opencast mining area.
作者
董倩
李素清
Dong Qian, Li Suqing(1.College of Environmental ＆ Resource Sciences, Shanxi University, Taiyuan 030006; 21nstitute of Loess Plateau, Shanxi University, Taiyuan 03000)
出处
《中国农学通报》
2018年第4期95-100,共6页
Chinese Agricultural Science Bulletin
基金
国家自然科学基金项目"黄土高原矿区退化生境土壤-植被协同恢复模式及生态效应研究"(41271531)
山西省第七批百人计划项目(207521013)
