上高县土地整治项目区域耕地 质量等级变化研究

以上高县土地整治项目为例,运用实地采样调研、室内分析化验与GIS技术相结合的方法,根据上高县上轮耕地质量等级更新的方法、参数体系、评价因素及权重,对上高县2011、2012年土地整治区域耕地质量等级进行评定,确定整治后耕地的自然等、利用等、经济等,并分析整治前后耕地质量等级变化的原因.结果表明:整治后耕地质量等级总体提升;整治后耕地田间基础设施明显改善,灌溉排水条件变化比较明显,土壤养分状况变化不太明显,说明土壤养分跟土壤本底质量有很大关系,难以在短时间内发生大变化;土地整治项目对耕地质量的影响会随着时间的延长而持续发挥作用.

Research on farmland quality grade change after land consolidation in Shanggao county

This paper took land consolidation project in Shanggao county of the southern China hilly region as an example, applied methods consisted of outdoor field survey, indoor test analysis and GIS technology, used the former round of the cultivated land quality grade update method, parameter system, evaluation factors and weights to evaluate the cultivated land quality grade in the land consolidation construction area in 2011 and 2012, and finally got the results including the economical grade, utilization grade and natural grade of the cultivated land. At the same time, this paper analyzed the reasons caused the change of the cultivated land quality grade, which appeared before and after land consolidation project. The results showed that, compared with the cultivated land quality grade before the land consolidation, the cultivated land grade rose after land consolidation. The basic infrastructure and drainage condition in the field improved obviously but the soil nutrients had slight change, this showed that the soil nutrients and the soil quality were interrelated after the land consolidation project, the soil nutrients could not change in a short time. The effect of land consolidation project on soil nutrients would be obvious with the extension of time. Evaluating the cultivated land quality change caused by the land consolidation could realize the comprehensive management of the cultivated land quality and quantity. The results could be used as the basis of land consolidation work performance evaluation and provide recommendations for future land consolidation research.