草甸草原不同放牧制度群落物质动态及植物补偿性生长研究

Studies on Matter Dynamics and Plant Compensatory Growth under Different Grazing Systems on Meadow Steppe

在草甸草原家庭牧场比较研究了不同放牧制度对群落物质动态变化规律及植物补偿性生长的影响。结果表明,划区轮牧较自由放牧可提高现存量、生长量、生产力;与对照相比2001年两种放牧制度下群落均表现为欠补偿生长;2003年划区轮牧区群落表现为等补偿生长,自由放牧区群落表现为欠补偿生长;两种放牧制度草群营养物质变化规律基本一致。

The effects of grazing systems on the matter dynamics and compensatory growth of grassland plants on the family ranch in meadow were studies.The results showed that the standing forages, prodution and productivity increased under rotational grazing systems . There were under-compensation for community under the two grazing systems in the year of 2001,and equal-compensation under the rotational grazing and under_compensation under the continuous grazing for community in the year of 2003. The nutrient dynamics were similar under the two grazing systems.