作　　者： ;

机构地区： 中山大学环境科学与工程学院环境科学系

出　　处： 《农村生态环境》 1996年第1期33-36,共4页

摘　　要： 研究了刈割频率对香港草地于物质生产的影响。结果表明，刈割使干物质生产量下降，刈割频率越高生产量下降越大。禾本科植物受刈割影响比木本和非禾本科草本植物大，且停止刚割一年后生物量仍低于对照点。认为常年刈割是华南草地生产力下降的重要原因之一。 The effects of clipping on production of grassland dry matter in Hong Kong has been studied using different clipping frequency.The results show that:(1)Production of dry matter declined significantly with clipping,and the more frequent the clipping,the more the production dropping.(2)The grasses were more effected than woody plants and other herbs by clipping.(3)Repeated clipping for long term had a severe effect on production of dry matter.Once the net primary productivity of grassland be depressed,it should take a long time to be restored. Low clipping frequency is suggested in order to keep the productivity of dry matter in grassland of southern China.

关 键 词： 刈割 草地 干物质 生产 香港

领　　域： [农业科学] [农业科学] [农业科学]