| Classification and Evalution on Agricultural Land,as an important part of Land management,includes 2 segments :classification and evaluation- on land quality and on change for land use.Basing on expounding the meaning of agricultural land,the author analyzes the blackground and significance of agricultural land's classification and evalution.Then the author discusses the ways to gricultural land's classification and evalution in term of Regulations for Gradation and Classification on Agricultural Land and Regulations for Evalution on Agricultural Land. Thirdly,the author ccomplishes applied Information System for Agricultural Land's Classification and Evalution(ALCEIS) and has got anticipative pupose taking Jiangyin county.In Section A,the author firstly expounds the meanings of Agricultural Land,Classification and Evalution on agricultural land. Secondly,the blackground and significance are put forward.At last,the technique is confirmed.In Section B,the author treatises the course of the construction on the information system consisting of general target,analysis of demand, design on fuction,data flow,design on software and hardware,math model and arithmetic design,data form and data structure,data dictionary, interface design and module design etc.In Section C,the system is tested as an example of Jiangyin and some harvest is obtained.In Section D,the author puts forward some advice about the information system.On the study of Agricultural land's classification and evaluation information system,the author expatiates his own opoinion,and lays stress on pratising.The results of his study are followed:l.Strickly following national regulation and based on the software of VB and Mapinfo,the author developed ALCEIS,which can be spreaded widely.2.With the help of ALCEIS, agricultural land'clss and agricultural standared land price were evaluated,which became a successful example. |
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