中国北方草地生物量时空分异的定位监测研究

The Position Monitoring of Temporal and Spatial Dynamics of Grassland Biomass in Northern China.

将19个草地地面定位监测点(内蒙古15个,宁夏、陕西、山西和黑龙江省各1个)3～11年的实测资料数据进行了分析、归纳和总结。研究区草地生物量的水平地带性区域分异规律是从西向东、从北向南递增;而生物量中灌木所占比重却从东向西、从南向北递增。草地生物量在时间上的分异变化多数草地类型表现为单峰型,但荒漠草原和草原化荒漠的某些类型的生物量变化有时表现为双峰型。

Three to eleven years data was analyzed in 19 grassland monitoring sites(15 sites in Inner Monglia, 1 site in Ninxia,Shannxi,Shanxi,and Helongjiang,respectively).The results showed that the grassland biomass increased from west to east,and from north to south;the percentage of shrub biomass increased from east to west,and from south to north.The seasonal dynamics of grassland biomass showed single peak curve change in most grassland types,but the seasonal dynamics of desert steppe and steppe desert showed double peak curve change sometimes.