“九五”三北地区沙棘发展问题探讨文／俞益民沙棘是我国北方分布很广的一种灌木，其果、种子和叶片中含有１００余种生物活性物质，营养成分异常丰富；沙棘又是优良的水土保持和防风固沙树种，也是优良的经济林、薪炭林和饲料林树种，具有很好的生态效益和经济效益。但是... Seabuckthorn Development Issues in Three North Regions in the Ninth Five-year Plan Period Yu Yuanmin Seabuckthorn is a shrub widely distributed in northern China. Its fruits, seeds and leaves contain more than 100 kinds of bioactive substances, which are exceptionally rich in nutrients. Seabuckthorn is also excellent Of soil and water conservation and windbreak sand fixation species, but also excellent economic forest, fuelwood forest and feed forest tree species, with good ecological and economic benefits. but...