多尺度EGLSN的建立及区域施肥研究

发布时间：2018-01-15 19:10

本文关键词：多尺度EGLSN的建立及区域施肥研究　出处：《山西农业大学》2016年硕士论文　论文类型：学位论文

更多相关文章：尺度 EGLSN 耕地地力 施肥 地理空间

【摘要】：土地是人类赖以生存发展的基础,耕地则是其中最重要的资源和条件。保护耕地,提高耕地生产力,对不同尺度区域进行优化耕地施肥,保护耕地生态环境是可持续发展的内在要求。依据景观生态学“过程、尺度与等级”原理,通过对GPS土壤调查采样点数据与耕地土壤及其环境相关数据的统计分析,探索耕地生产力的影响因素的尺度与影响过程的控制范围,提出了生态气候、地貌景观、利用措施、土壤条件、养分管理5个从大到小的不同尺度,建立了基于多尺度EGLSN (eco-climate, geomorphologic landscape, land use measure, soil condition, nutrient management)的耕地生产力评价体系。以山西省的从北到南3个不同区域的耕地生产力分布对这一方法进行验证。基于多尺度EGLSN理论,对山西省5个样区任意尺度区域施肥应用的理论与方法进行阐述,将多尺度耕地生产力评价结果与区域施肥的方法集成在多尺度区域优化配方施肥统一平台中。主要研究结论：(1)建立多尺度耕地生产力评价指标体系EGLSN的尺度范围依次是10 000hm2-100 000 hm2、1 000hm2-10 000hm2、100hm2-1000hm2、10 hm2-100 hm2、 1hm2-10hm2,整个指标体系报括积温、地形地貌、水利措施、耕层质地、秸秆还田等指标,通过选取山西忻府区、榆次区、襄汾县的验证表明,养分管理尺度、土壤条件尺度、利用措施尺度上总产量模拟精度都在90%以上,地貌景观尺度的总产量模拟精度也全部不低于80%,多尺度计算单产与土壤调查GPS采样点地貌景观尺度NRMSE都大于30%,利用措施尺度与土壤条件尺度NRMSE介于10%至30%,养分管理尺度NRMSE都小于10%；(2)基于多尺度EGLSN的区域耕地施肥应用与传统县域审定的配方符合较好,多尺度施肥区间适应区域范围变化,多尺度区间包含了传统施肥配方;(3)采用C#与AE技术实现的多尺度EGLSN配方施肥触摸屏统一平台,具有地图浏览、空间查询、区域施肥与地块施肥等功能,为耕地管理与区域施肥管理提供了快速的解决方案,能够提供任意尺度区域化施肥配方空间化,为不同层面农业管理与应用提供依据。
[Abstract]:Land is the basis of human survival and development, cultivated land is one of the most important resources and conditions. Protecting the ecological environment of cultivated land is the inherent requirement of sustainable development, according to the principle of "process, scale and grade" of landscape ecology. Based on the statistical analysis of GPS soil survey sampling point data and cultivated land soil and its environment related data, the scale of influencing factors of cultivated land productivity and the control range of influence process were explored, and the ecological climate was put forward. Geomorphologic landscape, utilization measures, soil conditions and nutrient management of 5 different scales from large to small, based on multi-scale EGLSN eco-climates were established. Geomorphologic landscape, land use measure, soil condition. Nutrient management). This method is verified by the distribution of cultivated land productivity in three different regions from north to south in Shanxi province. The method is based on multi-scale EGLSN theory. The theory and method of regional fertilization at arbitrary scale in 5 sample areas of Shanxi Province were expounded. The results of multi-scale cultivated land productivity evaluation and regional fertilization were integrated into the unified platform of multi-scale regional optimum formula fertilization. The main research conclusions were as follows: 1). The scale range of EGLSN was 10000hm2-100000hm ~ 2 for establishing a multi-scale cultivated land productivity evaluation index system. 10000hm2-10000hm2n 100hm2-1000hm2O10 hm2-100 hm2and 1hm2-10hm2. The whole index system includes accumulated temperature, topography, geomorphology, water conservancy measures, texture of tilling layer, straw returning to the field and so on. Through the verification of Xinfu District, Yuci District, Xiangfen County in Shanxi Province, the nutrient management scale is indicated. The total yield simulation accuracy of soil condition scale and measure scale are all above 90%, and the total yield simulation accuracy of geomorphological landscape scale is not less than 80%. The NRMSE of geomorphological landscape of GPS sampling site was larger than 30, and the NRMSE of measure scale and soil condition scale was between 10% and 30%. The nutrient management scale NRMSE was less than 10. (2) the application of regional fertilization based on multi-scale EGLSN is in good agreement with the formula approved by the traditional county area. The multi-scale fertilization interval adapts to the variation of the regional scope, and the multi-scale interval contains the traditional fertilization formula. Using C # and AE technology, the universal platform of multi-scale EGLSN formula fertilization touch screen has the functions of map browsing, spatial query, regional fertilization and plot fertilization, etc. It can provide a rapid solution for farmland management and regional fertilization management, and can provide the space for any scale regional fertilization formula, and provide the basis for agricultural management and application at different levels.
【学位授予单位】：山西农业大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：S147

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