生态保护视角下的青海省土地复垦分区研究

青海省面积辽阔,地形地貌复杂多变,生态环境原始脆弱,对青海省的土地复垦进行科学分区,对于复垦工作的实施与管理具有重要意义。本文选取青海省地形、降水量、温度、土壤、植被分布和土地利用现状作为分区指标,以县级行政单位为最小分区单元,通过变异系数法确定指标权重,采用权重指数和法计算最小分区单元的复垦条件综合分值,最后通过空间聚类和定性分析途径,将青海省划分为柴达木盆地寒温干旱荒漠、草甸复垦区、青南高原高寒湿润草甸复垦区、中部山地寒温半湿润草甸复垦区、东部温暖半干旱农业复垦区、祁连山东段寒温半湿润草甸复垦区五大复垦区,并针对各个复垦区实际情况提出了针对性的保护与复垦对策。

基于层次分析法的工矿废弃土地复垦潜力分区研究

工矿废弃土地复垦潜力分区评价的合理程度,对复垦工作的实施与管理有着密切的联系。为了对工矿废弃土地复垦潜力分区作出科学客观的评价,采用层次分析法建立了描述和评价复垦潜力分区的数学模型,该模型能综合考虑到复垦潜力各层次各因素对最后评价结果的影响,能同时定性和定量地对复垦潜力分区进行分析。实际使用情况表明,该模型有着很好的工程应用前景。

Analysis of Household Management Behavior in the Reclamation and Agricultural Area under Different Land Systems

In the paper, three farms of Jiansanjiang Farming Bureau and five villages in of Dayushu Town in Fujin county randomly were taken as data sources for the investigation of household behavior of reclamation and agricultural area under different land systems, and it can be concluded that the main content included production scale, arable land use structure, household behavior and economic benefits. By comparison and analysis, the advantages and disadvantages of reclamation and agricultural area can be found, which could provide references for agricultural land reform for achieving a more suitable socio-economic of efficient use and sustained and healthy development of agriculture.