大庆市草地数量特征空间分布研究

Study on the Spatial Distribution of Quantity Feature of Grassland in Daqing

2014年7~8月,以大庆市行政管辖区草地为研究对象,采用样地调查方法,进行草地群落高度、盖度、地上生物量、地下生物量等数量特征调查。结果表明:研究区域群落草层高度为34.62~65.80cm,盖度为65.72%~81.02%,草地现存量为160.71~254.10g/m2,枯落物量为6.84~63.97g/m2,地下生物量为7.96~30.04g/m3;群落的草层高度呈现南北部高于中部地区,盖度呈现北部地区高于南部地区,现存量整体呈现东部高于西部的格局,枯落物量总体表现出从南部到中部逐级递减,从中部到北部逐级增加的趋势,但地下生物量整体却呈现出西部高于东部,北部高于南部的格局。

With sample plot method, the investigation of grassland was conducted in administrative jurisdiction of Daqing municipality from July to August in 2015. The results showed that the grass layer height was 34. 62-65. 80cm, the coverage was 65. 72% -81. 0%, the grassland standing crop was 160.71-254.10g/m2, the litter was 6.84-63.97g/m2 , the underground biomass was 7.96-30.04g/m3. The grass layer in the south and north of the area was higher than that in middle area, coverage in the north of the area was higher than that in the south of the area, standing crop in the east of the area was higher than that in the west of the area, and the litter was reduced gradually from south to middle part, and increased from middle to north of the area, but the underground biomass in the west of the area was higher than that in the east of the area, and higher in the north of the area than that in the south of the area.