本文選題：統(tǒng)計(jì)數(shù)據(jù)　切入點(diǎn)：空間化　出處：《中國農(nóng)業(yè)資源與區(qū)劃》2017年08期

【摘要】：[目的]空間化作為一種常用的地學(xué)數(shù)據(jù)處理方法,必然會(huì)存在一定的誤差,而對(duì)空間化結(jié)果進(jìn)行誤差修正,可以降低空間化誤差。[方法]文章以2005年糧食產(chǎn)量空間化為例,以各地市不同農(nóng)田類型(水田、水澆地、旱地)面積數(shù)據(jù)為自變量,以各地市糧食產(chǎn)量統(tǒng)計(jì)數(shù)據(jù)為因變量,進(jìn)行多元線性回歸分析建模。在具體建模時(shí),令常數(shù)項(xiàng)為0,將全國分為7個(gè)區(qū),各區(qū)分別建立回歸方程。然后分別利用4種誤差修正方法對(duì)空間化初步結(jié)果進(jìn)行修正。選取4種誤差評(píng)價(jià)因子,對(duì)修正前后的空間化結(jié)果的精度進(jìn)行對(duì)比和分析。[結(jié)果](1)均值法不能被用于修正空間化初步結(jié)果;(2)比例系數(shù)法、權(quán)重系數(shù)法Ⅰ(不同農(nóng)田類型同一權(quán)重)和權(quán)重系數(shù)法Ⅱ(不同農(nóng)田類型不同權(quán)重)3種方法都可以被用于修正空間化初步結(jié)果;(3)利用權(quán)重系數(shù)法Ⅰ修正后的空間化結(jié)果的精度最高,比例系數(shù)法次之,權(quán)重系數(shù)法Ⅱ最差。[結(jié)論]誤差修正方法對(duì)提高空間化精度具有重要影響。該研究雖以糧食產(chǎn)量空間化為例,但所得結(jié)論同樣適用于其他社會(huì)經(jīng)濟(jì)統(tǒng)計(jì)數(shù)據(jù)的空間化研究,對(duì)以后統(tǒng)計(jì)型數(shù)據(jù)空間化研究具有一定的參考價(jià)值和指導(dǎo)作用。
[Abstract]:[Objective] spatialization as a common method of processing data, there must be some errors, but the results of spatial error correction, this method can reduce the error in space.] 2005 grain output space as an example, in different types of farmland around the city (paddy field, irrigated land, dry land area) the data as independent variables and dependent variables in food production around the city for statistical data, multivariate linear regression analysis model. In the model, so that the constant is 0, the country is divided into 7 zones, regression equations were established respectively by 4 districts. Then the error correction method for spatial correction. The preliminary results of selection 4 kinds of error evaluation factors were compared and analyzed. Results the results of space before and after the correction accuracy of the] (1) the average method cannot be used for modification of the space of the preliminary results; (2) proportional coefficient method, weight coefficient of different ( Farmland type the same weight and weight coefficient method (II) for different soil types with different weight) 3 kinds of methods can be used for modification of the space of the preliminary results; (3) using the method of weighting coefficients of the space I modified the highest accuracy, proportional coefficient method of weight coefficient method of the worst Conclusion]. The error correction method has an important impact on improving the spatial accuracy. While the study on spatial grain production as an example, the research space but the conclusion is also applicable to other social and economic statistical data, the spatial data after statistical research has certain reference value and guiding role.

【作者單位】： 防災(zāi)科技學(xué)院;河南大學(xué)環(huán)境與規(guī)劃學(xué)院;華東師范大學(xué)地理信息科學(xué)教育部重點(diǎn)實(shí)驗(yàn)室;云南大學(xué)資源環(huán)境與地理科學(xué)學(xué)院;
【基金】：中國科學(xué)院戰(zhàn)略性先導(dǎo)科技專項(xiàng)“應(yīng)對(duì)氣候變化的碳收支認(rèn)證及相關(guān)問題”(XDA05050000)
【分類號(hào)】：F224;F326.11

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本文編號(hào)：1720520