基于泥炭与冻土共生关系的川西高原泥炭化冻土分布研究  

Distribution of Frozen Soil of Peatification in the Western Sichuan Plateau Considering Symbiotic Relationship between Peat and Frozen Soil

作　　者：范荣全 唐杨 胡康 刘克亮 李涛 王亮 FAN Rongquan;TANG Yang;HU Kang;LIU Keliang;LI Tao;WANG Liang(State Grid Sichuan Electric Power Company Economic and Technological Research Institute,Chengdu 610041,Sichuan,P.R.China;State Grid Sichuan Electric Power Company,Chengdu 610041,Sichuan,P.R.China;State Key Laboratory of Geohazard Prevention and Environment Protection,Chengdu University of Technology,Chengdu 610059,Sichuan,P.R.China;Aba Power Supply Company cf State Grid Sichuan Electric Company,Aba Tibetan and Qiang Autonomous Prefecture 623200,Sichuan,P.R.China)

机构地区：[1]国网四川省电力公司经济技术研究院,四川成都610041 [2]国网四川省电力公司,四川成都610041 [3]地质灾害防治与地质环境保护国家重点实验室,成都理工大学,四川成都610059 [4]国网四川省电力公司阿坝供电公司,四川阿坝州623200

出　　处：《湿地科学》2022年第3期295-302,共8页Wetland Science

基　　金：国家电网有限公司科技项目(SGSCABO0JSJS2100524)资助。

摘　　要：由于泥炭化冻土是冻土工程建设中需要解决的重大问题,因此泥炭与冻土的共生关系备受关注。以川西高原0~30 cm深度的泥炭化冻土为研究对象,从泥炭化冻土的形成和泥炭与冻土的共生关系角度,选取控制因素,分析这些因素的控制机制,并将这些因素作为评价指标;采用熵权法、层次分析法和模糊评价方法,制作出川西高原泥炭化冻土分布图;最后,结合前人的相关研究成果对研究结果进行了验证。研究结果表明,采用的研究方法具有可行性;川西高原泥炭化冻土分布具有区域聚集、空间变异性大和受纬度地带性影响大的特点;高泥炭化冻土的面积为0.8×10^(4) km^(2)(约占研究区面积的5%),中泥炭化冻土的面积为7.8×10^(4) km^(2)(约占研究区面积的33%);低泥炭化冻土广泛分布,面积为11.5×10^(4) km^(2)(约占研究区面积的50%);非泥炭化冻土面积为3.0×10^(4) km^(2)(约占研究区面积的12%);多年冻土的泥炭化程度最大;冻土与泥炭的共生作用对冻土工程具有显著影响。Frozen soil with high peat content is a major problem in frozen soil engineering construction,and the symbiotic relationship between peat and frozen soil has attracted much attention.Take frozen soil of peatification at 0-30 cm depth in West Sichuan Plateau as an example,based on its formation,symbiosis relationship to select control factors for control mechanism analysis and evaluation index,and then using the entropy method and analytic hierarchy process method to produce a distribution map frozen soil of peatification in the West Sichuan Plateau.Finally,combined with the previous results of other scholars to verify the results in the study,with the remote sensing data to evaluate the distribution characteristics of frozen soil of peatification in the West Sichuan Plateau.The results showed that the methods adopted in this paper had certain feasibility;the distribution of frozen soil of peatification in the West Sichuan Plateau had the characteristics of large spatial variability,regional aggregation and great influence by latitudinal zonality;the area of high frozen soil of peatification in the West Sichuan Plateau was 0.8×10^(4)km^(2),accounting for about 5%area of the West Sichuan Plateau,the area of the medium one was 7.8×10^(4)km^(2),accounting for about 33%area of the West Sichuan Plateau,the area of the low one was 11.5×10^(4)km^(2),accounting for about 50%area of the West Sichuan Plateau,and the area of non-peat region was about 3×10^(4)km^(2),accounting for about 12%area of the West Sichuan Plateau;The symbiosis between frozen soil and peat has significant impact on frozen soi engineering,and the peat content of frozen soil in permafrost area was more than these in seasonal frozen soi area and non-frozen soil area.

关 键 词：泥炭化冻土 共生 熵权法 层次分析法 川西高原 

分 类 号：P931.7[天文地球—自然地理学]