【摘要】：為更好理解現(xiàn)代沉積物顏色指標(biāo)(亮度L~*、紅度a~*和黃度b~*)與氣候參數(shù)(年平均溫度和年平均降水量)關(guān)系,采集新疆和青海地區(qū)大空間尺度上104個(gè)地表沉積物樣品,運(yùn)用空間分析與傳統(tǒng)統(tǒng)計(jì)方法相結(jié)合探討了顏色指標(biāo)與氣候參數(shù)的空間趨勢(shì)特征及局部空間關(guān)系,并分析二者之間的相關(guān)性。研究發(fā)現(xiàn)無(wú)論是年平均溫度和L~*、a~*和b~*的趨勢(shì)分析還是空間關(guān)聯(lián)分析,年平均溫度和L~*、a~*和b~*在研究區(qū)域的不同地區(qū)具有不同的關(guān)系特征.年平均降水量和L~*、a~*和b~*的趨勢(shì)分析在研究區(qū)域的不同地區(qū)呈現(xiàn)負(fù)相關(guān),空間關(guān)聯(lián)分析中在東南部和中部年平均降水量與L~*、a~*和b~*呈現(xiàn)負(fù)相關(guān)的關(guān)系特征.該地區(qū)現(xiàn)代表土沉積物顏色指標(biāo)(L~*、a~*和b~*)與年平均降水量呈負(fù)相關(guān)關(guān)系,相關(guān)系數(shù)分別為-0.26、-0.35和-0.29(P=0.01),與年平均溫度相關(guān)性不顯著,可能與年平均溫度和顏色指標(biāo)在研究區(qū)域的不同地區(qū)具有不同的相關(guān)性有關(guān)。現(xiàn)代地表沉積物顏色指標(biāo)與氣候參數(shù)的相關(guān)性高低,與采樣點(diǎn)的數(shù)量、分布密度、跨度、地帶性土壤類(lèi)型、相關(guān)性分析方法等有關(guān).本研究對(duì)新疆和青海地區(qū)地表沉積物顏色指標(biāo)與氣候參數(shù)之間關(guān)系的探討,為深入探討該地區(qū)地層顏色指標(biāo)與古氣候環(huán)境關(guān)系提供參考依據(jù)。
[Abstract]:In order to better understand the relationship between the color indices of modern sediments (luminance, redness and yellowness) and climatic parameters (annual mean temperature and annual average precipitation), 104 surface sediment samples were collected on large spatial scales in Xinjiang and Qinghai. The spatial trend characteristics and local spatial relationship between color index and climate parameter are discussed by combining spatial analysis and traditional statistical method, and the correlation between them is analyzed. It is found that the annual mean temperature, the trend analysis of the annual mean temperature and the trend analysis of the annual mean temperature and the spatial correlation analysis, the annual mean temperature and the Lemna * and BX * have different relationship characteristics in different regions of the study area. The trend analysis of the annual average precipitation and the trend analysis of the annual mean precipitation and the annual precipitation in the study area showed negative correlation in different regions of the study area, and in the spatial correlation analysis, the annual average precipitation in the southeast and the middle of the region showed a negative correlation with the annual precipitation and the characteristics of the negative correlation between the annual average precipitation and the Lemna * and BU * in the spatial correlation analysis. In this area, there is a negative correlation between the color index of modern topsoil sediment (LPU * and BU *) and the annual average precipitation, the correlation coefficients are -0.26 ~ -0.35 and -0.29 (P0. 01), respectively, and the correlation coefficient is -0.26 ~ (-0.35) and -0.29 (P ~ (0.01), respectively. The correlation between annual mean temperature and annual average temperature is not significant, but it may be related to the different correlation between annual average temperature and color index in different regions of the study area. The correlation between the color index of modern surface sediments and climatic parameters is related to the number, distribution density, span, zonal soil type and correlation analysis method of sampling points. In this study, the relationship between the color index of surface sediments and climatic parameters in Xinjiang and Qinghai is discussed, which provides a reference for the further study of the relationship between stratigraphic color index and paleoclimate environment in this area.
【作者單位】： 沙漠與沙漠化重點(diǎn)實(shí)驗(yàn)室中國(guó)科學(xué)院西北生態(tài)環(huán)境資源研究院;中國(guó)科學(xué)院大學(xué);中國(guó)石油大學(xué)(華東)地球科學(xué)與技術(shù)學(xué)院;黃土與第四紀(jì)地質(zhì)國(guó)家重點(diǎn)實(shí)驗(yàn)室中國(guó)科學(xué)院地球環(huán)境研究所;蘭州大學(xué)資源環(huán)境學(xué)院;
【基金】：黃土與第四紀(jì)地質(zhì)國(guó)家重點(diǎn)實(shí)驗(yàn)室開(kāi)放基金(SKLLQG1515,SKLLQG1301) 中國(guó)科學(xué)院鹽湖資源與化學(xué)重點(diǎn)實(shí)驗(yàn)室開(kāi)放基金(KLSLRC-KF-13-DX-1)
【分類(lèi)號(hào)】：P512.2;P532

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