In this paper the cause of formation of environmental disaster in the western Guizhou is analyzed, it is influenced by natural factor and human activities.
本文分析了贵州西部环境灾害的形成原因，它既受自然因素的影响，也受人类活动的影响。
Both temperature analysis and environmental isotope tracer method are natural tracer method. Temperature is important influence factor to the distribution of environmental isotope.
温度和环境同位素示踪方法同属于天然示踪方法，且前者是后者的重要影响因素。
Soil erosion is a major factor of causing environmental degradation. For a long time, human irrational utilization of natural resources is destroying the vegetation and thus leads to serious erosion.
土壤侵蚀是造成环境退化的一个主要因素，长期以来，由于人类不合理的利用自然资源，导致植被生存的环境受到极大的破坏，引发了严重的土壤侵蚀。
The evaluation result showed that Zhangjiajie tourism environmental quality was overall very good and the natural ecological environment was biggest factor affecting the tourism environmental quality.
结果显示：张家界旅游环境质量总体上是好的，自然生态环境对旅游环境质量影响最大。
The evaluation result showed that Zhangjiajie tourism environmental quality was overall very good and the natural ecological environment was biggest factor affecting the tourism environmental quality.
结果显示：张家界旅游环境质量总体上是好的，自然生态环境对旅游环境质量影响最大。
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