摘要
为掌握渭北旱塬区耕地质量等别动态变化,加强耕地质量、数量、生态三位一体管护,以陕西省黄陵县为例,对耕地质量等别监测样点布控进行研究。采用多因素限制条件法、网格法和分层抽样法,对比提出县域耕地等别监测区样点布设和精度检验最佳方法。结果表明,县域耕地质量监测控制区划分依据自然质量控制区、土地利用等值区、土地经济等值区,通过ArcGIS空间叠加功能确定;综合确定监测样点布控的最佳方法为多因素限制条件法;黄陵县耕地质量等别监测布设45个监测点,经统计学检验,监测样点代表性程度较好,能够全面监测和反映耕地质量等别动态变化。
To master dynamic changes of cultivated land quality and enhance the quality,quantity and ecological protection of cultivated land,chosing Huangling county in Shaanxi province as an example,monitoring samples of cultivated land quality were studied. Multi-factor constraints method,grid method and stratified sampling method were used to do comparative analysis seeking for the best way to establish monitoring samples and check the acceptance at the county level. The results showed that monitoring control areas were divided according to natural quality control area,land use equivalent area and land economic equivalent area by using Arc GIS spatial overlay analysis. Multi-factor constraints method was selected as the best way for this research. The Huangling county was divided into 45 monitoring samples. After statistical examination,it shown a good representativeness of monitoring samples,which were able to monitor the dynamic changes of cultivated land comprehensively.
出处
《湖北农业科学》
2018年第2期48-54,118,共8页
Hubei Agricultural Sciences
基金
国家科技支撑计划项目(2013BAD20B03)
中央高校基本科研业务费专项资金项目(310827171014)
陕西省耕地质量监测理论和实践研究
关键词
土地利用
监测样点
多因素限制条件法
监测控制区
land use
monitoring sample
multi-factor constraints method
monitoring control area
