中国西南岩溶山地石漠化演变趋势

为揭示20世纪50年代末至今中国西南地区岩溶山地石漠化转型演变的时空分布及其特征，运用文献计量分析方法，对石漠化演变相关文献的总量和主题词进行了分析，并提取文献中石漠化演变的时间、类型、程度、驱动因素等信息，从县(市)域尺度对中国西南岩溶山地石漠化演变趋势及其空间分布进行综合分析，并进行了典型案例研究。研究表明，从20世纪50年代末至今，西南岩溶山地石漠化演变经历了由自然基础及人为破坏相互激发的严重石漠化向多种人为干扰、综合治理下的演变转型，即由高等级石漠化转向低等级石漠化的过程。在此基础上，研究认为石漠化存在由扩张向收缩转型演变的现象，同时对其转型演变的驱动机制和启示意义进行了探讨，以期为乡村振兴时代岩溶山地生态建设提供参考。

Evolution of rocky desertification in karst mountains of Southwest China

To reveal the temporal and spatial distribution and characteristics of the transformation and evolution of rocky desertification in karst mountains in Southwest China since the late 1950s, this paper uses bibliometric analysis methods to analyze the total amount of literature related to rocky desertification and the subject terms. Extracting information on the time, type, degree, and driving factors of rocky desertification evolution in the literature, we comprehensively analyze the evolution trend and spatial distribution of rocky desertification in karst mountains in Southwest China at county (city) scale and conduct typical case studies. Studies show that since the late 1950s, the evolution of rocky desertification in the karst mountains in Southwest China has transformed from severe rocky desertification caused by the natural foundation and man-made destruction to various human disturbances and comprehensive management, and the process from high-grade rocky desertification to low-grade rocky desertification. On this basis, the paper considers that there is a phenomenon of transition from expansion to contraction of rocky desertification, and discusses the driving mechanism and enlightenment of its transformation, to provide a reference for the ecological construction in karst mountains in the era of rural revitalization.