喀斯特石漠化及其景观生态学研究展望

KARST ROCKY DESERTIFICATION AND ITS LANDSCAPE ECOLOGICAL RESEARCH PROSPECTS

喀斯特石漠化是广泛分布于我国西南喀斯特地区的一种生态灾害,近30年来其扩展速度明显加快,严重制约了我国西南地区的经济发展和生态质量的提高。首先从概念、成因及防治等方面探讨了目前喀斯特石漠化的研究现状,并指出石漠化研究中的不足,主要表现为研究内容较片面,缺乏定量研究,标准不统一和缺乏景观水平上的研究。景观生态学有其特有的理论优势和方法体系,若利用景观生态学的理论和研究方法来研究石漠化,可以解决目前石漠化研究中的某些相关问题。最后,在此基础上,从景观生态学的角度出发,展望了喀斯特石漠化未来研究的4个方向,即景观格局变化、景观异质性及其分区、石漠化过程空间动态模拟和生物多样性。

Karst rocky desertification is a kind of ecological disasters, distributed widely in mountainous karst area of Southwest China. Over the last three decades,karst rocky desertification has become more and more serious ,intensely restricting the economical development and ecology quality enhancement of South-west China. Hence we must pay more attention to it. First,the current situation of karst rocky desertification research is discussed from the following three aspects：concept, causes and treatment. And then the coexisting related questions are analyzed,including the partial of research, the lack of quantitative research, the disagreement in criteria and the scarcity of landscape ecological research. Landscape ecology has its own theoretical predominance and methodology system, and we may resolve some related questions by using landscape ecological theories and research methods. Based on that,the future four prospects on karst rocky desertification research are finally presented in terms of landscape ecology, namely landscape pattern change research, study on landscape heterogeneity and regionalization, dynamic simulation on the process of karst rocky desertification and research on biodiversity.