则岔石林地质公园喀斯特地貌类型及形成机制

doi:10.12118/j.issn.1000-6060.2018.05.15

Abstract

Abstract: Zecha Stone Forest Geopark is located in Luqu County,Gansu Province,China.The landform in this area keeps the intact features of alpine-arctic karst,with typicality and rarity.In order to reveal its natural and scientific value,and to promote the natural resource development and landscape protection,the regional geological and geographic backgrounds of Luqu are briefed based on previous work and field investigation.The types of karst landform in Zecha Stone Forest Geopark have been introduced,which include the highland stone forest as the majority,the thin strip of sky as lightspot and the small karst caves as complementarities.The formation mechanism of the karst landform has been further analyzed from four aspects:tectonics,lithology,climate and biology.The results show that the tectonic movement,the development of joint fissures,and the difference of rocks cementation degrees laid a foundation for the formation of karst landscape.Moreover,under the alpine-arctic and dank climate condition with great changes,water corrosion,frost denudation,and weathering formed the unique alpine-arctic karst landscape in this area,which was characterized by many bedrocks and steep walls,tall stone forest and pillars,a few karst caves with poor connectivity and small size.The research provided some academic information of the karst landform in Zecha Stone Forest Geopark,which has certain significance in the scientific research on karst geological relics in high altitude areas of China.The ecologicalization of alpine-arctic karst provided a good reference for the governance of karst desertification in the south part of China.

Key words: Karst landform, formation mechanism, stone forest, Eastern Qinghai-Tibet Plateau, Luqu

CLC Number:

P931.5

XU Jia-hong, YAN Zhi-wu, LIU Xiao-dan. Geomorphic types and formation mechanism of the Karst landform in Zecha Stone Forest Geopark[J].干旱区地理, 2018, 41(5): 1027-1034.

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Geomorphic types and formation mechanism of the Karst landform in Zecha Stone Forest Geopark

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