草业科学2004，Vol.21Issue(12)：53-61,9.
日本那须地区饲草生物量随时间变化分析
Analysis of temporal changes in herbage biomass in Nixinasuno, JapanⅠ aboveground biomass
摘要
Abstract
In order to understand the temporal changes of biomass in grassland ecosystem, and to clarify the relation between these changes and environmental impacts, such as climatic factors and artificial disturbance,a grazing trail was carried out during a 21-year period from 1974 at a sown grassland of the National Grassland Research Institute, located in Nishinasuno, the central area of Japan. The data sets of biomass for each month (from April to November) of the 21 year period were analyzed. It showed aboveground biomass DW in the period from 1974 to 1981 ranged from 180 to 260 g/m2 in a heavy grazing plot and from 200 to 360 g/m2 in a light grazing plot, both with large seasonal variation. In the period from 1982 to 1989, it ranged from150 to 380 g/m2 in a low nitrogen plot, and from 240 to 360 g/m2 in a high nitrogen plot. The highest aboveground biomass was recorded in May and June, and the lowest was recorded in November for each of the treatment for each year. A multiple regression analysis was done to clarify the relation between biomass and meteorological conditions, and an analysis of variance (ANOVA) was used to clarify the effects of grazing intensity, nitrogen application, and the year and month on biomass.关键词
地上现存生物量/放牧压力/放牧草场/长期实验/施肥量Key words
aboveground biomass/grazing intensity/grazing pasture/long-term experiment/nitrogen application分类
生物科学引用本文复制引用
亦如翰,盐見正衛,高橋繁男,大久保忠旦..日本那须地区饲草生物量随时间变化分析[J].草业科学,2004,21(12):53-61,9.基金项目
本文由暨南大学优秀引进人才启动基金资助(640562) （640562）
