Analysis Of The Ecological Revegetation In Henan Expressway

In this paper through on-the-spot investigation , sampling survey and the parts general investigation methods. Summing up the present state of the ecological revegetation in Henan expressway and pointed out the insufficiencies. Concentrate on analysis the plant resources, pattern of plant revegetation, ecological rehabilitation mode and the feature of Plant community in hutong areas in henna expressway.hoping to provide guidance instruction for expressway construction in future.The main contents are as follows:1,The first person exploration and analysis of plant resources utilized in the ecological revegetation in Henan expressway。Bring a clear picture of the basic conditions of plant. Identify the plant resource utilization status in the ecological revegetation in Henan expressway in the ecological revegetation in Henan expressway.In order to directs the work of the ecological revegetation and regreening..As a result :The plant resource are very wealth in Henan expressway . The concept of biological diversity is well reflected. Different area have larger differences . South of Henan Province's plant resource are most rich .2,Establishment the evaluation system of ecological restoration of plant utilized in medial divide in the ecological revegetation in Henan expressway. The index-evaluation system consisting of the effect of glaring prohibited,growth conditions, the amount of cutting resistance, resistance barren of view, the environmental protection, the coordination degree, environmental protection, stability, green period so as . Make a comprehensive evaluation to plants these were utilized in medial divide . As a result: The order of the comprehensive evaluation for he main dizziness-preventing plants from high to low is: Photinia serrulata Lindl﹥Sabina komarovii > Euonymus japonicus Thunb﹥Viburnum odoratissimum >Pittosporum tobira.the result of hedge and flowering shrub is : here are more than 90 points are Nerium indicum Mill, Cv.aujrea.nana and Pyracantha fortuneana; 80-90 points for most plants; Below 80 points plants are Cornus alba, Sorbaria kirilowii Maxim and Kerria japonica. The order of the cover plant from high to low is: Iris tectorum Maxim>Ophiopogon japonicus>Trifolium repens Linn.>Rosa chinensis > Rhododendron simsii & R.spp > Oxalis crassipes >Zephyranthes candida Herb.>Cynodon dactylon L.3,Discussion the feature for plant community in interchange areas in Xinnan expressway . Analysis of four Interchange areas plant community diversity index. Combination of the same vegetation species diversity in natural community . Analysis and comparison the differences between artificial and natural communities.Analysis the Plant life-form spectral : Four Interchange areas plant life-form spectrum are unsound. Missing Ch layer ,Cr layer and T layer .Thus plant community is largely different from nearby natural ones. In the future, During the conservation and management,optimizment. Focus on increase H layer, reasonable guide the Cr layer and the T so that it have a more reasonable life-form spectrum..Analysis the Plant diversity for arborous layer and shrub layer :The diversity index of four Interchange areas of arborous layer and shrub layer were significantly higher than the diversity index of adjacent zone.This show that the traces of artificial are heavy in four areas. Ombinatorial optimization in the future ,As much as possible to simulation of the natural community. Adopting green patterns of arborous,shrub,grass and rattan combination of at different levels.Analysis from structural characteristics of plant communities :Four areas Plant configuration mode are basically reflect the characteristics of local vegetation.( Evergreen, deciduous broad-leaved forest vegetation). Greening ncontinue to maintai this feature in the future. The gardening plants accounted for a large proportion at four interchange. Much more than the native species. This vegetation in the natural environment is not natural. Can not integration together with the surrounding environment. Ombinatorial optimization in the future : Need to increase the proportion of native species...