Herbage Diversity And Effective Factors In Reclamation Land Of Antaibao Opencast Coal Mine

Herbaceous community is an important part of vegetation in An Tai-bao mine area, that the growth conditions and diversity is an important indicator of mine area to responsed the plant community structure, function and stability artificial ecosystem. In this paper, the permanent growth of plants for plots and environmental factors for field could be investigation and data analyzed by the method of quadrat survey and laboratory analysis for the mine area of An Tai-bao, The main results and conclusions are as follows:After long-term ecological restoration and governance of mining so that the whole diversity of West plant communities on the rise. At end of September 2014, there was a total of 139 kinds of plants that belong to 41 families; Of which there are 128 kinds of herbs,31 families,95 genera, accounting for 92.1% of the total number of plant species. Asteraceae have 28 genera 51 species,36.7% of the total number of species; Acaroid plants have 17 genera 29 species, accounting for 20.9% of the total; Leguminous plants have 11 genera 20 species, accounting for 14.4% of the total; With the rise of mine area diversity index the ecosystem to be stabilized.The mine area vegetation has been changing constantly by ecological reconstruction.Plant community succession and diversity mainly influenced by climate, soil nutrients, altitude, slope, topography and other environmental factors; Improvement in soil and plants repaire has interaction; Plant diversity was increased by artificial factor; Plant communities in this area tend to be relatively stable stage.The plant diversity can be change by configuration mode of Plant communities such as grass, shrub and arbor. The study showed that, in 2012 the diversity index of broadleaf forest was significantly higher than the coniferous forest, but the diversity index between 2013 and 2014were similar, the diversity index can be strong impacted by the climate; Evenness coniferous forest and broadleaf forests were similar, important value and the frequency of plant species were quite different. The evenness index of W I plant sample was lowest in 2014; Especially the dominant species of coniferous forest were higher than the overall value of broadleaf forest, the frequency appearance of broadleaf forest was higher than coniferous forest. The species quantity of conifer forest was higher than broadleaf forest. The climate of competition, growth substrate, nutrients, canopy density and plant species were main causes of biodiversity change.