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。
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