中国南方喀斯特世界自然遗产拓展地环江喀斯特地貌价值及贡献(英文)

Geomorphologic value and contributions of the HuanjiangKarst Extension to South China Karst World Heritage

“中国南方喀斯特”是中国向联合国教科文组织世界遗产委员会分期申报的系列世界自然遗产。“中国南方喀斯特”第一期遗产地包括云南石林喀斯特、贵州荔波喀斯特和重庆武隆喀斯特；第二期提名地则包括了广西桂林喀斯特、贵州施秉喀斯特、重庆金佛山喀斯特，以及作为荔波喀斯特拓展地的广西环江喀斯特。环江喀斯特作为中国南方喀斯特荔波世界自然遗产地的拓展，对其申报论证倍受关注。新西兰Williams教授2013年考察环江时指出：“环江喀斯特作为荔波喀斯特的拓展地，无须论证其突出的普遍价值，而应关注其拓展的价值，即能为中国南方喀斯特及荔波喀斯特世界自然遗产构成作出哪些突出贡献”。然而近年来人们多注重于荔波喀斯特地貌世界遗产价值研究，环江喀斯特的世界遗产价值至今尚无人进行过相关研究。本文基于野外实测资料、研究区遥感影像图、1∶10000地形图及1∶200000水文地质图等工作底图，并运用 ArcGIS、Erdas、AutoCAD、Photoshop 等技术软件，尝试从环江喀斯特的地理地质背景、地貌特征等方面与荔波喀斯特和“中国南方喀斯特”其他片区进行对比的角度来研究环江喀斯特的地貌特征，旨在申明环江喀斯特的拓展，能为“中国南方喀斯特”世界自然遗产做出哪些实际的补充和完善，进而为“中国南方喀斯特”第二期世界自然遗产的成功申报提供科学材料。

“South China Karst”is a serial World Natural Heritage site,nominated in phases by the government of China to the UNESCO World Heritage Committee. In this paper,based on the geomorphologic characteristic research of Huanjiang Karst,is compared with Libo Karst and other sites of “South China Karst”.It is concluded that：（1）Huanjiang Karst and Libo Karst have the same geomorphic landscape type-cone karst.（2 ）The extension adds the geomorphologic rej uve-nation value to Libo Karst.（3）Huanjiang Karst in the nomination will make an important addition to the integrity problem about the boundary of the southern buffer zone of Libo Karst World Heritage Site,resulting from the administrative boundary between Guizhou and Guangxi Provinces,including geology and geomor-phology,biology and ecology,natural landscape,etc.,further more meeting the integrity requirements of world heritage;（4）In the history of South China karst, Libo-Huanjiang Karst recorded the sedimentary history of the second cycle of car-bonate rocks.After experiencing the transformation processes of karst landforms from Dongwu,Indosinian and Neotectonic movements,they represent the cone karst landform in the transition zone from the Yunnan-Guizhou Plateau to the Guil-in Basin in southern China and the ongoing evolution process of cone karst geomor-phology.It is the model site for tropical-subtropical cone karst in the world.