Before And After Thinning Of Quercus Variabilis Dwarf Forest Characteristics And Potential Analysis Of Sustainable Development

To exploration Cork dwarf forest between cutting before and after of forest points featuresand continued development potential, this research to QinLing south slope (floor viewsTaiwan, and ShangZhou， and foping) Cork dwarf forest forest is divided into research object,take sample to set, and sample to investigation, and stocks update potential measure ofmethod, and community within environment factor determination and evaluation and Corksecondary community stability integrated evaluation, method, on fixed sample to of Corkdwarf forest for between cutting before and after of environment factor, and community factor,and outside interference, and Of Quercus variabilis population surveys and soil surveysfocused on five aspects of investigation and surveillance, analysis of Quercus variabilis dwarfforest potential and its relationships with environmental factors; before and after thinning oncharacteristics of Quercus variabilis dwarf forest and sustainable development analysis of thepotential impact of different ecological characteristics of Quercus variabilis dwarf forest andcommunity stability.Cork oak stumps sprouting seedling growth gradually began to decline after the2nd year afterharvesting trends discovered through harvesting monitoring for3times in a row:1th slowestdeclining rate of stumps sprouting after harvesting. But with the gradual restoration ofQuercus variabilis dwarf forest after harvesting,3times after cutting stumps sprout anoticeable downward trend in the rate of the current year. Caused the main reason for this isbecause of the Cork after logging more than once had a certain plant hormones stimulatemontane Elfin Forest and stumps stored nutrients do not meet initial sprouting seedlingrecovery and update lead stumps sprouting rate be reduced.Different between cutting strength between cutting implementation3years Hou, advantageArbor (Cork, and Pinus tabulaeformis, and acuteserrata) of height, and dbh and Crown site net growth volume, and soil fertility, and woodland species diversity index, and rich degreesindex, and uniform degrees index are performance for: strength between cutting> in thedegrees between cutting> mild between cutting> controlled; Cork, and Pinus tabulaeformis,and acuteserrata of seedlings density and advantage shrubs species of high, and base trail andCrown site growth are performance for: strength between cutting> in the degrees betweencutting> mild between cutting.Through to sample to Quercus variabilis cutting pile Meng seedlings continuous5yearsduring of monitoring research found: Dang logging Hou Quercus variabilis cutting pile notfor except tiller of Meng seedlings number yearly reduced, but in end of years Hou graduallyand tends to stable, and these cutting pile Meng seedlings from base trail, and Crown site, andheight growth and left Meng measures of cutting pile Meng seedlings for compared, itsgrowth range to obvious below all left Meng measures of cutting pile Meng seedlings. ByCork oak stumps sprouting seedling5th year after thinning, aerial parts of cork oak treesindividual biomass, total biomass of each Member are showing strength>> mild> againstthe trend. Cork oak stumps sprouting trunk biomass and total biomass of seedlings arecharacterized by intensity thinning> moderate thinning> cutting in mild, it can be seen thatduring the5years after thinning, with increasing thinning intensity, Cork oak stumpssprouting seedling growth rates will significantly increase.By the above function in the application of fuzzy mathematics method on dynamics ofdominant populations of Quercus variabilis dwarf forests before and after thinning quantity,characteristics of forest stands,4types of indicators of soil fertility and the diversity ofspecies, as well as15specific analysis of the impact factor, resulting in different effects ofthinning intensity on the stability of Quercus variabilis forest communities. By average plotsbefore and after thinning indicators such as tree height, density and diameter to investigate,clarify the effects of thinning on characteristics of Quercus variabilis stands. Survey sampleplots before and after thinning, closeness and other indicators of soil nutrients, moisture,woodland Habitat factors change; on forest changes in species diversity, population structure,strong, sexual and asexual plants, age structure and growth of seedlings of the same agetargets for investigation, stated before and after thinning effects on population structure and sustainable development of the montane Elfin Forest. Provided the basis for sustained growthof Quercus variabilis dwarf forest.