Study On Land Suitability Evaluation Of The Tea Plantation In The Guizhou Mountainous Areas

Guizhou, as a province with a high tea yield is a native land of the teatrees as well as the ancient tea plantations. With the development of the socialeconomy, the tea industry faces the problem of blind expansion of the teaplantations and the continued low single production level. In order to optimizethe regional allocation of the tea industry and improve the quality of the teaand the technological support of the single production level, it is of realisticsignificance to carry out the research of the suitability evaluation of thetea-cultivating land in the Guizhou mountain areas.Based on the relative theories and the technological methods about thesuitability evaluation of the tea-cultivating land and the practical situations ofthe development of the tea industry in Guizhou as well as the analysis of theconstituent parts of the land, the quality and the safety of the soil and theconditions of the tea tree planting, the dissertation will establish the indexsystem of the suitability evaluation of the tea-cultivating land in Guizhou. Thetechnology of GPS and fuzzy analytic hierarchy process will be used toestablish the evaluation model. Model Builder will be employed to establishthe flow chart of the evaluation model. With Shiqian County as the researcharea, the dissertation will carry out the research of the suitability evaluation ofthe tea-cultivating land. The research findings are as follows：（1）Based on the relative theories of suitability evaluation of the land,Selects14indexes from four factors that influences the growth of tea that thesoil, climate, topography, geology, then the suitability evaluation indexsystem of Guizhou mountain tea planting was set up, and finally the landsuitability evaluation model would be constructed with the support of GIStechnology and Fuzzy AHP method. （2） Model Builder in ArcGIS is employed to accomplish theestablishment of the flow chart of the model of suitability of evaluation of teaplanting in Guizhou mountain area,with the support of the model, automaticprocessing of the suitability evaluation will be realized to simplify the designof the model and the operation process in the complicated space.（3）Choosing the Shiqian County as the research area and Using themethod of natural breakpoint classification in ArcGIS,the tea plantation willbe divided into the highly suitable areas, secondary adaptation areas, barelysuitable areas and the unsuitable areas. After the comprehensive evaluation ofthe suitability of the tea-cultivation land in the research areas by using theevaluation model, the research findings are as follows: the highly suitableareas are31475.727hm2, accounting for the14.48%of the total area; thesecondary adaptation areas68622.603hm2, accounting for31.58%of the total;the barely suitable areas57883.21hm2, accounting for26.64%of the total;and the unsuitable areas are59327.406hm2, accounting for27.30%of thetotal area.According to the suitability evaluation of land of tea planting area,wehope it will provide reference for quantitative research of suitability evaluationof the agricultural product land in Guizhou mountain area,and use the flowchart of the model which based on Model Builder to realize the automaticprocess of the suitability evaluation and enrich the trains of thought and thetechnological methods of the suitability evaluation of the land.