柞蚕场砂化、退化成因分析及柞蚕业发展的基本构想

An analysis on desertification and degeneration of rearing farm for Antheraea pernyi and a basic conception to promote sericulture development

最近30 a,辽东山区的柞蚕场资源明显出现衰退趋势,年均衰退率在0.89%,整个辽东山区的蚕场砂化和退化面积已占23.4%,达1.5×105hm2,水土流失逐年增加,局部地表已出现沟蚀现象。本文通过对现有柞蚕场资源调查,分析了柞蚕场砂化、退化的成因,并就柞蚕业与生态环境建设协调发展,提出了柞蚕业发展的基本构想。

The resources of rearing farm for Antheraea pernyi that have declined of 0.89% per year in eastern(mountainous) area of Liaoning Province in recent 30 years. Presently, the areas of desertification and degeneration of the rearing farm have attained 1.5×10~5 hm^2, accounted for 23.4% of the total area, so that soil and water losses has increased year by year which resulting in gully erosion on earth's surface partially. Based on the investigation on (existing) resources of the rearing farm for Antheraea pernyi, this paper analyzes the causes of desertification and (degeneration), advances a basic conception on expanding sericulture under coordinating its development with (ecological) environment there.