Suitability Evaluation And Division Of Kiwi Based On GIS And Standardized Theory In The South Of Shaanxi Province

Kiwi fruit industry is characteristic of shaanxi industry and the advantage industry,the main planting area of Qinling Mountains in shaanxi north,and south bank of Weihe River.From the point of administrative area,Planting area is relatively large for Zhou Zhi,and MeiXian Which occupy more than 70% of shaanxi province.With the development of kiwi industry,ZhouZhi,MeiXian Who dominatedKiwi fruit industry in shaanxi has been limited after years of sustained development.So the government put forward kiwi "eastward expansion southward" strategy to help the farmers get rich,hoping to expand the scale of planting kiwi to achieve common Shaanxi Province rich.The paper based on the theory of GIS and standardization determines the evaluation index and evaluation model of kiwifruit in southern Shaanxi and divides the suitable planting area of kiwifruit in southern Shaanxi.The main findings are as follows:1.To determine the kiwi suitability evaluation factor and build the evaluation modelThe natural factors affecting the growth of kiwifruit were determined by previous research on kiwifruit cultivation techniques and kiwi expert opinions.Including annual average temperature,frost-free period,extreme minimum temperature,annual rainfall,sunshine hours,?10 ? activity accumulated temperature,soil type,soil pH,slope and aspect.The 10 natural factors were used as evaluation factors,and the evaluation model of each evaluation unit was established.2.kiwi suitability distribution map in the south of shaanxiThe membership function of each evaluation factor was established by fuzzy evaluation method,and the single factor evaluation of each factor was carried out by GIS spatial analysis technique.The corresponding single factor appropriate area map was generated.On the basis of expert suggestion,the weight of each evaluation factor is calculated using the analytic hierarchy process.On the basis of the single factor evaluation,the evaluation unit of each 1km x 1km was calculated by using the grid calculator of the spatial analysis module in ArcMap software and the suitability distribution map of kiwifruit in southern Shaanxi was obtained.3.kiwi suitability analysis in the south of shaanxiAccording to the grid size of each unit,the suitability of kiwifruit in southern Shaanxiis divided into:the most suitable area,suitable area,sub-suitable area and unsuitable area.On the whole,the area of kiwi of very suitable and suitable area in southern Shaanxi is very large,which mainly distributed in ShangLuo area,most areas of Ankang and HanZhong,MianXian,among which the most suitable area is mainly distributed in ShangLuo County ShangNan County,Zhen An County southeast,AnKang City,northeast of Xun Yang County and Cheng Gu County central region,YangXian County,BaiHe County,a small part of the region.The second appropriate area is mainly distributed in ZhenBa County,stay dam county,XiXiang County,NanZheng County,LueYang County,NingQiang County.The area is not distributed mainly in the eastern,central and central areas of ZhenBa County.On the basis of the distribution of the appropriate region,the situation of the suitable area is analyzed,and provide theoretical support to the development of kiwi industry in southern Shaanxi.4.Combination of GIS and StandardizationThe highlight of this study is to combine GIS and standardization theory to optimize the key factors that affect the growth of kiwifruit by means of standardization theory,to reduce the steps and time in GIS processing,to improve the precision and efficiency of zoning,and to provide a demonstration for further land suitability evaluation.