姬红利, 周文君, 张一平, 沙丽清. 云南土壤色度与海拔及气候的关系研究[J]. 云南大学学报(自然科学版), 2013, 35(S2): 352. doi: 10.7540/j.ynu.20130801
引用本文: 姬红利, 周文君, 张一平, 沙丽清. 云南土壤色度与海拔及气候的关系研究[J]. 云南大学学报(自然科学版), 2013, 35(S2): 352. doi: 10.7540/j.ynu.20130801
Relationship between soil color and climatic factors in Yunnan[J]. Journal of Yunnan University: Natural Sciences Edition, 2013, 35(S2): 352. DOI: 10.7540/j.ynu.20130801
Citation: Relationship between soil color and climatic factors in Yunnan[J]. Journal of Yunnan University: Natural Sciences Edition, 2013, 35(S2): 352. DOI: 10.7540/j.ynu.20130801

云南土壤色度与海拔及气候的关系研究

Relationship between soil color and climatic factors in Yunnan

  • 摘要: 为了确定土壤颜色的不同指标对地形及气候因子指示作用的可靠性,本研究利用Munsell 色度体系分析了云南草地生态系统的土壤颜色变化特征.从土壤颜色与海拔和气候因素的关系得知:云南土壤颜色分布具有明显的海拔限制与区域性.土壤色度指标中的亮度与海拔、气温和降水都具有较好的相关性(p<0.01),显示亮度越高,则海拔越低,气候越湿热.表明亮度比其它3个指标(彩度、色调、红度)更能反映像云南这种地势复杂,气候多样的区域气候变化;而红度更适于反映大尺度、大区域、气候带明显的区域气候因子变化.说明土壤颜色与气候条件并非总是一致的,因而通过土壤色度值推算气候指标时还需考虑地形地貌、时间尺度等因素,选用最能代表研究地区的色度指标.

     

    Abstract: In order to determine the reliability of soil color indexes for identifying the terrain and climate factors,the Munsell color chart was used for examining soil color of grassland in Yunnan Province.The results showed that the soil color distribution was obviously restricted by elevation and region.After the analysis of relationship between altitude,mean annual temperature,mean annual precipitation and soil color,including chroma,value,hue and redness rating,we provided that soil value had a significant correlation with altitude,temperature and precipitation (p<0.01),that was,soil value increased with decreased altitude and hot-humid weather.However,in this study,the correlation between soil redness rating and climatic factors was not significant.Which indicated that soil value would be more suitable for reflecting regional climate change,just as Yunnan Province that has complex topography and geomorphology,and soil redness rating would represent the large scale and long ages climate change.So soil color may not always be consistent with the climatic factors,and other factors,such as landform,physiognomy and temporal scale,which could be taken into account when we calculate climate indices through soil color,and the most representable color index should be chosen according to the research area.

     

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