关于石漠化科学内涵的探讨

石漠化是近年来倍受关注的生态地质环境问题.介绍了石漠化概念提出的环境背景,通过对当前主要的石漠化概念比较和分析,结合对概念界定的哲学依据的剖析,从更全面更合理的角度探讨了石漠化的科学内涵.石漠化是在热带亚热带暖温带湿润半湿润气候条件的喀斯特环境背景下,由于人类活动和自然因素,导致地表植被遭受破坏,土壤严重侵蚀,基岩裸露或砾石堆积,土地生产力严重下降,地表出现类似荒漠景观的土地退化过程和现象.石漠化是人类活动和喀斯特脆弱生态环境相互影响的过程及其现象,它的本质是土地生产力退化,诊断标志是各种石漠化景观.

Discussion on Scientific Connotation of Karst Rocky Desertification

Karst rocky desertification is an eco-geo-environmental problem which has been paid more and more attentions in recent years. After considering the philosophical evidence, we discussed the connotation of karst rocky desertification to a more comprehensive and reasonable extent in virtue of introducing the background，in which all kinds of connotation were put forward，analyzed and compared connotations of karst rocky desertification. Karst rocky desertification is a process of land devolution that mainly occurred at the background of tropical，subtropical belt and warm temperature zone vegetation is destroyed，its main phenomena can be summarized as followings:eroded seriously, bedrock and gravels are exposed，the land productivity declines seriously, and at last the karst succeed to desert liked landscapes under human activities and natural forces on the vulnerable environment of ecology and geology, and karst rocky desertification are influenced by interactivities of human beings and the vulnerable environment，its essence and diagnostic sym- bols are land productivity degradation and landscapes appear to be karst rocky desertification respectively.