Taking Fengkai County of Guangdong Province as an example of the application of GIS technology in farmland grading.The application of GIS in farmland grading is discussed in order to provide a professional and high-ef...Taking Fengkai County of Guangdong Province as an example of the application of GIS technology in farmland grading.The application of GIS in farmland grading is discussed in order to provide a professional and high-efficient method to complete the work.The function of space analysis of MAPGIS software shows advantages in speed and precision and is regarded as a new way of farmland grading.展开更多
To find out the spatial pattern of comprehensive grain potential,we chose α,R i,Y i from the research output of farmland grading and took them as the basic data; using the Aggregated Advantage Indices and hierarchica...To find out the spatial pattern of comprehensive grain potential,we chose α,R i,Y i from the research output of farmland grading and took them as the basic data; using the Aggregated Advantage Indices and hierarchical cluster analysis methods,finally regionalized all the12 counties into 4 regions: I High potential-regions easy to be mined in the short term,II High potential-regions that can be mined in the long term,III Low potential-regions easy to be mined in the short term,IV Low potential-regions difficult to be mined in the long term. From the study results,we also find out that the Scale Advantage Indices of farmland( SAI) has a strong positive effect on the Aggregated Advantage Indices of grain potential( AAI),so we conclude that it is necessary to maintain and increase a certain amount of farmland area to ensure the regional grain production capacity.展开更多
文摘Taking Fengkai County of Guangdong Province as an example of the application of GIS technology in farmland grading.The application of GIS in farmland grading is discussed in order to provide a professional and high-efficient method to complete the work.The function of space analysis of MAPGIS software shows advantages in speed and precision and is regarded as a new way of farmland grading.
文摘To find out the spatial pattern of comprehensive grain potential,we chose α,R i,Y i from the research output of farmland grading and took them as the basic data; using the Aggregated Advantage Indices and hierarchical cluster analysis methods,finally regionalized all the12 counties into 4 regions: I High potential-regions easy to be mined in the short term,II High potential-regions that can be mined in the long term,III Low potential-regions easy to be mined in the short term,IV Low potential-regions difficult to be mined in the long term. From the study results,we also find out that the Scale Advantage Indices of farmland( SAI) has a strong positive effect on the Aggregated Advantage Indices of grain potential( AAI),so we conclude that it is necessary to maintain and increase a certain amount of farmland area to ensure the regional grain production capacity.