The Spatial Distribution Pattern Of Cultivate Land Quality In Tongshan

Cultivated land resource is an important part of land resources.During the urbanization,the contradiction between people and land has become increasingly apparent.In this context,how to protect and use cultivated land scientifically and reasonably has become very important.This paper takes Tongshan County as the research object,analyzing the diversity and concentration of cultivated land quality in county area with the methods of Lorenz curve,landscape indexes,and dividing the cultivated land into four partitions with the method of cluster analysis.And then,on the basis of the above research,this paper also tries to analyze the space gathering rules of cultivated land quantity with the method of spatial autocorrelation analysis.At last,this paper divides the cultivated land in Tongshan County into seven areas from the purpose of protecting cultivated land.And the result is as follows:(1)With the method of lorenz curve,landscape indexes,including diversity index,centralization index,dominance index,and evenness index,this paper analyzes the spatial distribution pattern of the cultivated land,and finally divided the cultivated land into four areas.(2)Form the perspective of the global spatial autocorrelation,the cultivated land appears remarkable autocorrelation.And from the local spatial autocorrelation,the quality of cultivated land shows certain agglomeration laws in spatial distribution.In the aspect of cultivated land natural quality,due to Tongshan's "north-south high,intermediate low" physiognomy,the high natural level of cultivated land are mainly distributed in the middle of the county,and the low natural level of cultivated land are mainly distributed in the north and the south of the county.More over,the positive correlation type((H-H type and L-L type)of cultivated land quantity shows strong spatial agglomeration,while the negative correlation type(L-H type and H-L type)of cultivated land quantity is relatively scattered.In the aspect of cultivated land using condition,the high using level of cultivated land are mainly distributed in the north of Tongyang Town and east of Huangshapu Town.And the low using level of cultivated land are mainly distributed in the cluster of Nanlinqiao Town,Yangfanglin Country,and Xiapu Town;the east Honggang Town and Cikou Country.More over,comparing with the local spatial autocorrelation result of cultivated land natural quality,the positive correlation type((H-H type and L-L type)of cultivated land use quantity shows stronger spatial agglomeration,while the negative correlation type(L-H type and H-L type)of cultivated land use quantity is also relatively scattered,showing no obvious rules.In the aspect of cultivated land economic condition,the spatial distribution patterns of cultivated land economic quality are similar to the cultivated land use quantity.The high economic level of cultivated land are mainly distributed in Tongyang Town and Huangshapu Town.And the low economic level of cultivated land are mainly distributed in the cluster of Nanlinqiao Town,Yangfanglin Country,and Xiapu Town;the cluster of Chuangwang Town,Jiugongshan parkland,and Honggang Town;northeastern of Cikou County.More over,similar to the the local spatial autocorrelation result of cultivated land use quality,the positive correlation type((H-H type and L-L type)of cultivated land economic quantity shows strong spatial agglomeration,while the negative correlation type(L-H type and H-L type)of cultivated land use quantity remains relatively scattered.(3)On the basis of spatial autocorrelation analysis result,this paper divides the cultivated land in Tongshan County into seven zones:comprehensive demonstration area,moderate development and consolidation area,restrict non-agricultural construction areas,comprehensive improvement area,moderate improvement area,non-agricultural construction area,and reforestation area.