关键词: 专利分析, 石漠化治理

Abstract: Rocky desertification has become one of the major obstacles to sustainable development in the southwest Karst area of China, its control and recovery is complex engineering. By 1 159 simple patent families analysis, this paper reveals the classification distribution and main fields of rocky desertification control technologies in China. By reading patent abstracts, patents are divided into 3 major categories (rocky desertification judgement, rocky desertification control and economy), 10 middle ones (rocky desertification monitoring and evaluation, scientific instruments, Biological control, mechanical control, chemical control, integrated control, agriculture, industry) and 42 small categories, such as rainwater collection and purification. According to the number of patents, 4 main technology fields of rocky desertification control include:engineering management (8.63%), water utilization (12.51%), edible or medicinal plants cultivation (27.52%) and plants resources deep processing (9.67%), accounting for 58.33% of the total. Content analysis method is used in the four main technology fields, extracted engineering management measures, rain collecting tools, plants and processing products are analyzed in detail, and the inadequacies in rocky desertification control revealed in patents are pointed out, such as lower processing technologies, lack in soil preservation, facility agro-technique and gene technology. It can provide a reference from patents for a comprehensive understanding of rocky desertification control technologies in China.

Key words: patents analysis, rocky desertification control