作　　者： ; ;

机构地区： 宁夏大学西部生态与生物资源开发联合研究中心

出　　处： 《资源科学》 2007年第6期138-145,共8页

摘　　要： 对宁夏盐池县人地关系中的"人"子系统和"地"子系统进行了分析研究。"人"子系统的研究主要从人口数量、人口质量和人类行为3个方面着手;"地"子系统的研究主要从土地利用、耕地变化和地表植被变化3个方面着手。地表植被状况的变化用遥感卫星影像的归一化植被指数NDVI(normalized difference vegetation index)来综合反映。进而再运用相关分析法研究盐池县"人"子系统和"地"子系统的相互作用关系,并总结了其演变过程。分析发现宁夏盐池县人地关系系统存在的问题主要是:人口文化素质仍较差,劳动力文化水平偏低;掠夺式的人类行为导致"地"子系统的不断退化。进而相应提出了控制人口增长,加大劳动力转移力度,以减轻人口压力;提高种植业整体水平;通过合理的草地利用方式,从根本上缓解人地矛盾;多能互补,解决能源问题等调适对策。 In order to study the evolution of human-land relationship, the case study was conducted in Yanchi county of Ningxia autonomous region. Firstly, the paper briefly discussed the progress and the significance of human-land relationship, and then analyzed ＂human＂ subsystem and ＂land＂ subsystem respectively. The analysis of ＂Human＂ has been conducted through subsystem done from population quantity, population quality and human behavior. The results show that the population numbers is increasing quickly; the population quality is not high, and most population in the study area have engaged in agricultural and animal husbandry production which takes the land as major means of production. The analysis of ＂land＂ subsystem has been done from land use, changes of cultivated land and vegetation. The results show that grazing is dominant in land-use. The cultivated land resource in the region is rich, with an unbalanced distribution, and also largely cultivated land is medium-and low-yield fields; the inter- annual status of the grassland has large difference; the distribution of woodland is unbalanced, and also main forest category is coppice and shrubbery. The objective region is an important part of the ecotone of agriculture-animal husbandry in China. It is reported that the grassland resources in Yanchi county occupy 83.7% of the total land area. Therefore, the vegetation status is the most important part of the ＂land＂ subsystem. However, there is no coherent statistical data of the change of vegetation in the long time in this region, the NDVI. （normalized： difference vegetation index） used in the paper could comprehensively reflect the change of vegetation. And then, the paper used the method of correlation analysis, studied the relations among ＂human＂ subsystem and ＂land＂ subsystem, and summarized the evolution process in human-land relationship in Yanchi county since 1957, divided the evolution process into five phases as well. The problems in human-land relationship are as follows�

关 键 词： 人地关系 人 子系统 地 子系统 盐池县

领　　域： [环境科学与工程]