The Study On The Suitability Evaluation Of The Investigation Of Reserve Resources Of Cultivated Land In Jining District

The suitability evaluation of reserve resources of cultivated land provides a scientific basis for reasonable exploitation and utilization of these lands aiming to ensure food supplies of China.Taking the whole reserve resources of cultivated land in Jining District as the evaluation object based on database in Second Rural Land Investigation of China,six factors of inherent and external were adopted,the weight contributions of individual factors were determined combining the Delphi method and an analytic hierarchy process(AHP).The suitability indices of each evaluation unit were calculated by using the exponential test,and then the suitability grades were classified.The results are as follows:(1)There are 7991.88 hectares of the reserve resources of cultivated land in Jining District,6837.25 hectares of reserve resources of cultivated land are grasslands,accounting for 85.55% of the total reserve resources.And others successively were bare lands,inland beaches,mining lands,sandy lands and saline lands.(2)Da Shi Hao village has 2687.05 hectares reserve resources of cultivated land in Jining District and occupies the biggest percentage,accounting for 33.62% of the total reserve resources.And others successively were villages of Zhai Jia Gou,Shi Jia,Ba Wang He,and so on.(3)The area of suitably developed reserve resources of cultivated land is 4603.52 hectares in Jining District,accounting for 57.60% of the total reserve resources.However,the area of unsuitably developed reserve resources of cultivated land is 3388.36 hectares,accounting for 42.40% of the total reserve resources.(4)For the suitably developed reserve resources of cultivated land,Zhai Jia Gou village has the biggest area about 4603.52 hectares.And others successively were villages of Da Shi Hao,Da He Wan,Shi Jia and Liu Hao Qu,and so on.Zhai Jia Gou village in the South of Jining district and partial low-lying land in the village of Da Shi Hao,and so on may be a key place to develop.And the main reserve resources of cultivated land are grasslands and bare lands.(5)The highly suitable,moderately suitable,and resilience suitable grades in suitably developed reserve resources of cultivated land in Jining District accounts for 18.52%,33.64%,and 47.84%,respectively,and grasslands and bare lands are the main reserve resources of cultivated land,accounting for 80.75% and 10.80% of the total suitably developed reserve resources of cultivated land in Jining District,respectively.