基于监测指标复合式控制区的耕地质量监测点布设方法

发布时间：2018-02-27 16:28

本文关键词： 土地利用监测耕地质量土地信息监测布点复合式控制区　出处：《农业工程学报》2017年19期 　论文类型：期刊论文

【摘要】：为探寻耕地质量监测点布设方法,解决现有监测点空间布局不合理、针对性不强,监测精准化程度差和监测成本过高的问题。该文以耕地地力调查与质量评价成果为数据源,在样点数据分析基础上,采用变异系数法、可视离散化法、克里格插值法、叠加法,以及误差理论和抽样理论,确定监测控制区层级、层级划分区间及与之对应的监测点位数量,形成监测指标复合式控制区,布设监测点位。以克山县为例进行技术应用,将11个指标200个监测点位进行2 200次测试化验,110 kg土壤样本消耗量、44万元监测费用的方案,优化至7个指标30个监测点位进行81次测试化验,4.05kg土壤样本消耗量、1.62万元监测费用,增强了耕地质量监测的针对性,降低了监测成本和资源消耗,且研究布设监测点位数据对耕地地力调查与质量评价数据具有较好的代表性。该方法切实可行,具有很好的应用价值,可以通过较少的投入,获取精准、较大的信息量,可为耕地质量监测点位优化提供方法借鉴。
[Abstract]:In order to find out how to set up the monitoring sites of cultivated land quality, to solve the problems of unreasonable space layout, weak pertinence, poor precision and high cost of monitoring, the paper takes the results of cultivated land fertility investigation and quality evaluation as data sources. Based on the analysis of sample data, the level of monitoring control area is determined by using variation coefficient method, visual discretization method, Kriging interpolation method, superposition method, error theory and sampling theory. Divide the interval and the corresponding number of monitoring points, form a composite control area of monitoring indicators, and set up monitoring points. Take Keshan County as an example to carry out technical application, The scheme of soil sample consumption of 110kg and monitoring cost of 440,000 yuan was carried out for 2 200 tests at 200 monitoring sites of 11 indexes and 200 monitoring points. The cost of soil sample consumption was optimized to be 4.05 kg for 81 times of testing at 30 monitoring points of 7 indexes, and 16,200 yuan for monitoring cost. It enhances the pertinence of cultivated land quality monitoring, reduces the monitoring cost and resource consumption, and studies that the monitoring site data is representative to the cultivated land fertility survey and quality evaluation data. It has good application value, and can obtain accurate and large information through less input, and can be used as a reference for the optimization of cultivated land quality monitoring points.
【作者单位】：东北大学土地管理研究所;
【基金】：国家自然科学基金项目(41671520) 黑龙江省国土资源科研项目(201411);黑龙江省国土资源科研项目(201414)
【分类号】：F323.211

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