Research On The Spatial Classification Of Advantageous Agriculture In The Evaluation Of The Suitability Of Territorial Spatial Development

Since the reform and opening up,China has made all-round,groundbreaking and groundbreaking historical achievements in industrialization and urbanization development,but the contradiction between human and land has also increasingly become a difficult problem in our pursuit of sustainable and high-quality development.This is reflected in the continuous encroachment of urban space into agricultural space and ecological space,and the lack of optimization of the spatial structure and layout of the country and the disorderly coordination of regional multi-objectives,which has aggravated the conflict between human and land.The traditional territorial space development suitability only considers the suitability of construction,agricultural production and ecological protection at the macro level,and the focus of the"agricultural space"is only on the protection of permanent basic agricultural land and grain production areas,and the single requirement of keeping the bottom line of grain in China.Based on this,considering that Guigang is a typical agricultural city in Guangxi and its primary industry development prospect and natural resources conditions are similar in China,this study not only assesses the agricultural production potential of plantation,animal husbandry and fishery,but also adds a number of factors that are important for high-quality human development,such as major agricultural infrastructure and human environmental protection,based on the traditional territorial space development suitability.It constructs the index system for dividing the advantageous agricultural space in Guigang from five aspects:evaluation of land resources advantage,evaluation of agricultural infrastructure advantage,evaluation of agricultural products advantage,evaluation of agricultural culture advantage and evaluation of location advantage,conducts global autocorrelation and local autocorrelation analysis on each evaluation result,then divides the advantageous agricultural space in the study area according to the analysis result,and makes a simple analysis of each advantageous space and proposes corresponding utilization and protection suggestions.The results of the study showed that:(1)The spatial evaluation results of advantageous agriculture in Guigang show that although the distribution of each advantageous evaluation result has its own characteristics,there are certain commonalities.In general,they are distributed in the plains in the west,central and east of Guigang City,and sporadically in the hilly areas in the south and north of Guigang City.The evaluation result of land resource advantage shows a trend of"low in the north and high in the south,gradually decreasing from the middle to the surroundings".The evaluation results of agricultural infrastructure mainly show a trend of"high in the middle and low around".The evaluation results of agricultural products’advantages show a distribution trend of"high in the middle and low at the edge".The evaluation results of agro-cultural advantages are unevenly distributed and more dispersed.The location advantage evaluation results mainly show a strip-like distribution trend.(2)The results of spatial correlation analysis show that there is a strong positive correlation among the advantages,and the evaluation results have a clustering trend in spatial distribution.The cold spots,sub-hot spots and hot spots of land resource advantages are spatially distributed,and the overall distribution pattern is"hot from east to west and cold from north to south",with 41.04%of the hot spots and 16.32%of the cold spots in the region.Agricultural infrastructure advantages of cold spots and hot spots in the spatially aggregated distribution,the overall"hot in the central and eastern part and cold in the west"distribution pattern,hot spots accounted for 44.59%of the region’s agricultural infrastructure advantages,cold areas accounted for 40.79%.The cold spots and hot spots of agricultural products are spatially distributed,and the overall distribution pattern is"hot in the middle and west,cold in the north and south",with the hot spots accounting for 61.77%of the region’s agricultural products and the cold spots accounting for 28.52%.Location advantage cold spot area and hot spot area is spatially aggregated distribution,hot spot area accounts for 32.55%of the region’s location advantage,cold spot area accounts for 53.82%.(3)Based on the results of the division of dominant agricultural space,the dominant agricultural space in Guigang can be divided into three types of single dominant space,four types of double dominant space and one type of multi-dominant space.Single advantage space includes land resource advantage space,agricultural infrastructure advantage space and agricultural product advantage space;double advantage space includes land resources-agricultural products double advantage space,agricultural infrastructure-agricultural products double advantage space,land resources-location double advantage space,land resources-agricultural culture double advantage space;multi-advantageous space contains location-land resources-agricultural products multi-advantageous space.(4)The distribution of the dominant agricultural space in Guigang is strongly influenced by the topography of Guigang.According to the division results,the advantageous agricultural space area of Guigang is 2708.37 km~2,accounting for 25.54%of the national land area.Among them,the area of single dominant space is 720.66 km~2,accounting for 6.80%of the national land area;the area of double dominant space is 1137.82 km~2,accounting for 10.73%of the national land area;the area of multi-dominant space is 849.88 km~2,accounting for 8.01%of the national land area.The largest proportion of the area of the single dominant space,the land resource dominant space;Among the double-advantageous spaces,land resources-agricultural products double-advantageous space and land resources-location double-advantageous space account for the largest proportion.In general,Guigang’s agricultural product advantage spaces and related double advantage spaces and multiple advantage spaces are mostly located in the western,central and eastern parts of the city where the terrain is gentle,while a small number of agricultural infrastructure advantage spaces,land resource advantage spaces and their related double advantage spaces are located in the southern hilly areas.