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  本文關(guān)鍵詞：多尺度EGLSN的建立及區(qū)域施肥研究　出處：《山西農(nóng)業(yè)大學(xué)》2016年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 尺度 EGLSN 耕地地力 施肥 地理空間

【摘要】：土地是人類賴以生存發(fā)展的基礎(chǔ),耕地則是其中最重要的資源和條件。保護耕地,提高耕地生產(chǎn)力,對不同尺度區(qū)域進行優(yōu)化耕地施肥,保護耕地生態(tài)環(huán)境是可持續(xù)發(fā)展的內(nèi)在要求。依據(jù)景觀生態(tài)學(xué)“過程、尺度與等級”原理,通過對GPS土壤調(diào)查采樣點數(shù)據(jù)與耕地土壤及其環(huán)境相關(guān)數(shù)據(jù)的統(tǒng)計分析,探索耕地生產(chǎn)力的影響因素的尺度與影響過程的控制范圍,提出了生態(tài)氣候、地貌景觀、利用措施、土壤條件、養(yǎng)分管理5個從大到小的不同尺度,建立了基于多尺度EGLSN (eco-climate, geomorphologic landscape, land use measure, soil condition, nutrient management)的耕地生產(chǎn)力評價體系。以山西省的從北到南3個不同區(qū)域的耕地生產(chǎn)力分布對這一方法進行驗證�；诙喑叨菶GLSN理論,對山西省5個樣區(qū)任意尺度區(qū)域施肥應(yīng)用的理論與方法進行闡述,將多尺度耕地生產(chǎn)力評價結(jié)果與區(qū)域施肥的方法集成在多尺度區(qū)域優(yōu)化配方施肥統(tǒng)一平臺中。主要研究結(jié)論：(1)建立多尺度耕地生產(chǎn)力評價指標體系EGLSN的尺度范圍依次是10 000hm2-100 000 hm2、1 000hm2-10 000hm2、100hm2-1000hm2、10 hm2-100 hm2、 1hm2-10hm2,整個指標體系報括積溫、地形地貌、水利措施、耕層質(zhì)地、秸稈還田等指標,通過選取山西忻府區(qū)、榆次區(qū)、襄汾縣的驗證表明,養(yǎng)分管理尺度、土壤條件尺度、利用措施尺度上總產(chǎn)量模擬精度都在90%以上,地貌景觀尺度的總產(chǎn)量模擬精度也全部不低于80%,多尺度計算單產(chǎn)與土壤調(diào)查GPS采樣點地貌景觀尺度NRMSE都大于30%,利用措施尺度與土壤條件尺度NRMSE介于10%至30%,養(yǎng)分管理尺度NRMSE都小于10%；(2)基于多尺度EGLSN的區(qū)域耕地施肥應(yīng)用與傳統(tǒng)縣域?qū)彾ǖ呐浞椒陷^好,多尺度施肥區(qū)間適應(yīng)區(qū)域范圍變化,多尺度區(qū)間包含了傳統(tǒng)施肥配方;(3)采用C#與AE技術(shù)實現(xiàn)的多尺度EGLSN配方施肥觸摸屏統(tǒng)一平臺,具有地圖瀏覽、空間查詢、區(qū)域施肥與地塊施肥等功能,為耕地管理與區(qū)域施肥管理提供了快速的解決方案,能夠提供任意尺度區(qū)域化施肥配方空間化,為不同層面農(nóng)業(yè)管理與應(yīng)用提供依據(jù)。
[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.
【學(xué)位授予單位】：山西農(nóng)業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：S147

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1 張遷遷;多尺度EGLSN的建立及區(qū)域施肥研究[D];山西農(nóng)業(yè)大學(xué);2016年

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本文編號：1429665