Factors influencing thermokarst lake development in Beiluhe basin, the Qinghai-Tibet Plateau

被引：11
作者：
Wang, Huini [1 ]
Liu, Hongjia [2 ]
Ni, Wankui [3 ]
机构：
[1] Wuhan Univ Technol, Intelligent Transport Syst Res Ctr, Engn Res Ctr Transportat Safety, Minist Educ,Natl Engn Res Ctr Water Transport Saf, 1040 Heping Ave, Wuhan 430063, Hubei, Peoples R China
[2] Jiujiang Univ, Sch Civil Engn & Urban Construct, 551 East Qianjin Rd, Jiujiang 332000, Peoples R China
[3] Changan Univ, Geol Engn & Survey Inst, Xian 710054, Shaanxi, Peoples R China
来源：
ENVIRONMENTAL EARTH SCIENCES | 2017年 / 76卷 / 24期
关键词：
Frozen soil; Qinghai-Tibet Plateau; Sensitivity analysis; Thermokarst lake; RIVER-BASIN; PERMAFROST; HIGHWAY; RAILWAY;
D O I：
10.1007/s12665-017-7143-2
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Thermokarst lake is a significant indicator of permafrost degradation. However, the evaluation of thermokarst lake development is very difficult through physical mechanism analysis because the development is influenced by many factors. In the present study, the factors influencing thermokarst lake development were investigated from the perspective of frozen soil and the geographical environment. The influences of six factors on thermokarst lake development in Beiluhe basin, located in the hinterland of the Qinghai-Tibet Plateau, were analyzed: permafrost type, ground temperature, vegetation type, soil type, hydrogeological type, and slope. Sensitivity coefficients were calculated for these factors using statistical methods. The results show that thermokarst lake development was influenced by the analyzed factors as follows: permafrost > soil type > ground temperature > hydrogeological type. Furthermore, 80.1% of the study area was highly sensitive to thermokarst lake development. Overall, thermokarst lake development in the Beiluhe basin was thoroughly evaluated based on sensitivity factors and an established statistical evaluation method. The method detailed in this paper provides a reference for evaluating the likelihood and severity of thermokarst lake development.
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页数：15
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