新疆青海地区现代地表沉积物颜色指标与气候参数关系
发布时间：2018-12-09 14:17
【摘要】：为更好理解现代沉积物颜色指标(亮度L~*、红度a~*和黄度b~*)与气候参数(年平均温度和年平均降水量)关系,采集新疆和青海地区大空间尺度上104个地表沉积物样品,运用空间分析与传统统计方法相结合探讨了颜色指标与气候参数的空间趋势特征及局部空间关系,并分析二者之间的相关性。研究发现无论是年平均温度和L~*、a~*和b~*的趋势分析还是空间关联分析,年平均温度和L~*、a~*和b~*在研究区域的不同地区具有不同的关系特征.年平均降水量和L~*、a~*和b~*的趋势分析在研究区域的不同地区呈现负相关,空间关联分析中在东南部和中部年平均降水量与L~*、a~*和b~*呈现负相关的关系特征.该地区现代表土沉积物颜色指标(L~*、a~*和b~*)与年平均降水量呈负相关关系,相关系数分别为-0.26、-0.35和-0.29(P=0.01),与年平均温度相关性不显著,可能与年平均温度和颜色指标在研究区域的不同地区具有不同的相关性有关。现代地表沉积物颜色指标与气候参数的相关性高低,与采样点的数量、分布密度、跨度、地带性土壤类型、相关性分析方法等有关.本研究对新疆和青海地区地表沉积物颜色指标与气候参数之间关系的探讨,为深入探讨该地区地层颜色指标与古气候环境关系提供参考依据。
[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.
【作者单位】： 沙漠与沙漠化重点实验室中国科学院西北生态环境资源研究院;中国科学院大学;中国石油大学(华东)地球科学与技术学院;黄土与第四纪地质国家重点实验室中国科学院地球环境研究所;兰州大学资源环境学院;
【基金】：黄土与第四纪地质国家重点实验室开放基金(SKLLQG1515,SKLLQG1301) 中国科学院盐湖资源与化学重点实验室开放基金(KLSLRC-KF-13-DX-1)
【分类号】：P512.2;P532
[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.
【作者单位】： 沙漠与沙漠化重点实验室中国科学院西北生态环境资源研究院;中国科学院大学;中国石油大学(华东)地球科学与技术学院;黄土与第四纪地质国家重点实验室中国科学院地球环境研究所;兰州大学资源环境学院;
【基金】：黄土与第四纪地质国家重点实验室开放基金(SKLLQG1515,SKLLQG1301) 中国科学院盐湖资源与化学重点实验室开放基金(KLSLRC-KF-13-DX-1)
【分类号】：P512.2;P532
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