By combining the special natural conditions in karst mountain area, the necessity and importance in strengthen the research on soil tillage erosion is put forward.
本文还结合岩溶山区特殊的自然环境条件，提出了加强岩溶山区土壤耕作侵蚀研究的必要性和重要意义。
Taking a typical karst mountain area, Nongla in Guangxi as an example, the correlation between soil organic matter and the content of available nutrients in selected soils was discussed in this paper.
以广西弄拉峰丛山区为例探讨岩溶区偏碱性条件下土壤有机质与有效态养分含量之间的相关关系。
The unique hydrogeology, soil and vegetation in karst mountain area are the major natural factors of it's serious erosion of water and soil.
岩溶山地独特的水文地质、土壤、植被等是其严重水土流失的主要自然因素。
Karst disaster is one of the familiar geology disasters in tunnel construction of mountain area.
我国是一个多山、多岩溶地貌国家，岩溶问题是山区隧道建设中的关键问题之一。
In the course of tunnel construction in karst mountain area, huge karst cave with water is the important factor for karst water and mud inrush disaster.
岩溶山区隧道施工过程中，大型充水溶洞是造成隧道突水突泥事故的重要因素。
In the course of tunnel construction in karst mountain area, huge karst cave with water is the important factor for karst water and mud inrush disaster.
岩溶山区隧道施工过程中，大型充水溶洞是造成隧道突水突泥事故的重要因素。
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