| 世界遗产——四川黄龙钙华景观退化现象、原因及保护对策分析 |
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| 关键词:landscape degradation causess countermesures Huanglong Sichuan |
| 基金项目:中国科学院“百人计划”项目(编号: 2006-067);国家自然科学基金项目(编号: 40872168) |
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| An Analysis of Travertine Landscape Degradation in Huanglong Ravine of Sichuan, A World’s Heritage Site, and Its Causes and Protection Countermesures |
| Travertine landscape at Huanglong Scenic Area shows obvious degradation with the increasing number of tourists in recent years, which finds expression in such aspects as the drying up of the travertine pool, the declined travertine deposition rate and the accelerated algae propagation and travertine darkness. To understand whether these degradations have relation with tourists’ activities, the authors investigated water quality and carbonate precipitation rate of Huanglong Ravine in the wet period of 2010 from late May to early November. Automatic logging in field combined with laboratory analysis was carried out to study temporal variations in algae chlorophyll concentration and travertine deposition rate. The results show that tourists’ activities have an impact on water quality in some degree and thereby affect the carbonate precipitation rate and algae growth. The authors also found that the reduction of surface stream water is caused by increased surface water leakage, as evidenced by analyzing such factors as the spring flow change in recent years, the enhancement of engineering activities inside and outside the scenic area and the slowing carbonate precipitation in recent years. It is held that the enhanced permeability is caused probably by project blasting vibration and the declining of travertine density due to slowing precipitation rate. The conclusion can thus be reached that Huanglong Ravine travertine degradation, to some degree, should be attributed to the effect of human activities. |
| ZHANG Jin-liu,WANG Hai-jing,DONG Li,ZHAO De-meng.2012.An Analysis of Travertine Landscape Degradation in Huanglong Ravine of Sichuan, A World’s Heritage Site, and Its Causes and Protection Countermesures[J].Acta Geoscientica Sinica,33(1):111-120. |
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