Xishuangbanna is a multinational region and different ethnic groups have self-owned traditional ways of protecting biodiversity, represented by Dragon Moun-tain and Hil Cemetery, and Temple Forest. As population incre...Xishuangbanna is a multinational region and different ethnic groups have self-owned traditional ways of protecting biodiversity, represented by Dragon Moun-tain and Hil Cemetery, and Temple Forest. As population increases and economy develops, people’s consciousness of traditional culture is fading and both of the number and area of sacred natural sites underwent changes, undermining the role of sacred natural sites playing in biodiversity protection, especial y for species pro-tection and gene exchange.展开更多
In the research, sacred natural sites in the areas where Dai people, Hani people, Blang people and Zhuang people live mainly surveyed, covering 819 natural villages, 152 village committees and 31 towns. Presently, the...In the research, sacred natural sites in the areas where Dai people, Hani people, Blang people and Zhuang people live mainly surveyed, covering 819 natural villages, 152 village committees and 31 towns. Presently, the area of sacred natural sites is only 1% of that in 1957 and the reduction of area is mainly caused by concept weakening, population increasing and economic development, as well as historical factors. Hence, it is recommended to strengthen management on sacred natural sites, in terms of formulating village rules or agreements and strengthening promotion.展开更多
The Cheng-Lan railway links Chengdu, a central city in Southwestern China, and Lanzhou, a central city in Northwestern China. The railway passes through the Longmenshan fault zone (Wenchuan earthquake happened there o...The Cheng-Lan railway links Chengdu, a central city in Southwestern China, and Lanzhou, a central city in Northwestern China. The railway passes through the Longmenshan fault zone (Wenchuan earthquake happened there on May 12, 2008), Minjiang fault zone, and Dongkunlun fault zone, which are all active. It runs over the Yangtze River and the Yellow River, and crosses high mountains and deep valleys. There exists, along the railway's alignment, different kinds of strata of hard granite and soft, weak metamorphic rocks such as carbonaceous slate, schist, and phyllite. It is, therefore, a key issue for such an infrastructure construction to assess the engineering geological conditions and risks, so as to mitigate or avoid possible georisks and to offer optional designs. Geological survey and georisk assessment along the railway corridor are carried out. Special attention is given to active faults, earthquakes and seismic zones. Based on these, discussions about geological aspects for route selection of the railway are conducted and countermeasures for georisk control are proposed accordingly. Main conclusions are achieved as follows: (1) Geohazards such as landslides, rockfalls and debries flows dominate both the route selection of the railway and the engineering structures (e.g., tunnels or bridges) adopted; (2) Tunnel has been proved to be an excellent structure for linear engineering in geologically active area; and (3) In the case where avoiding is impractical, necessary protection measures should be taken to engineering slopes in high earthquake intensity areas, especially the area with earthquake of Ms. 8 or greater.展开更多
基金Supported by Xishuangbanna Tropic Rain Forest Conservation Foundation~~
文摘Xishuangbanna is a multinational region and different ethnic groups have self-owned traditional ways of protecting biodiversity, represented by Dragon Moun-tain and Hil Cemetery, and Temple Forest. As population increases and economy develops, people’s consciousness of traditional culture is fading and both of the number and area of sacred natural sites underwent changes, undermining the role of sacred natural sites playing in biodiversity protection, especial y for species pro-tection and gene exchange.
基金Supported by Xishuangbanna Tropic Rain Forest Conservation Foundation~~
文摘In the research, sacred natural sites in the areas where Dai people, Hani people, Blang people and Zhuang people live mainly surveyed, covering 819 natural villages, 152 village committees and 31 towns. Presently, the area of sacred natural sites is only 1% of that in 1957 and the reduction of area is mainly caused by concept weakening, population increasing and economic development, as well as historical factors. Hence, it is recommended to strengthen management on sacred natural sites, in terms of formulating village rules or agreements and strengthening promotion.
基金supported by a grant from the Major State Basic Research Development Program of China(973Program)(Grant No.2013CB733202)the team research fund of the State Key Laboratory of Geohazards Prevention and Geoenvironment Protection(Grant No.SKLGP)
文摘The Cheng-Lan railway links Chengdu, a central city in Southwestern China, and Lanzhou, a central city in Northwestern China. The railway passes through the Longmenshan fault zone (Wenchuan earthquake happened there on May 12, 2008), Minjiang fault zone, and Dongkunlun fault zone, which are all active. It runs over the Yangtze River and the Yellow River, and crosses high mountains and deep valleys. There exists, along the railway's alignment, different kinds of strata of hard granite and soft, weak metamorphic rocks such as carbonaceous slate, schist, and phyllite. It is, therefore, a key issue for such an infrastructure construction to assess the engineering geological conditions and risks, so as to mitigate or avoid possible georisks and to offer optional designs. Geological survey and georisk assessment along the railway corridor are carried out. Special attention is given to active faults, earthquakes and seismic zones. Based on these, discussions about geological aspects for route selection of the railway are conducted and countermeasures for georisk control are proposed accordingly. Main conclusions are achieved as follows: (1) Geohazards such as landslides, rockfalls and debries flows dominate both the route selection of the railway and the engineering structures (e.g., tunnels or bridges) adopted; (2) Tunnel has been proved to be an excellent structure for linear engineering in geologically active area; and (3) In the case where avoiding is impractical, necessary protection measures should be taken to engineering slopes in high earthquake intensity areas, especially the area with earthquake of Ms. 8 or greater.
