不同放牧强度下荒漠草原长芒草种群补偿性生长的研究

Study on Community Growth of Stipa bungeana Population under Different Grazing Intensities on Desert Steppe

在盐池四墩子天然草地上比较研究了不同放牧强度下荒漠草原长芒草种群地上净初级生长量及根系生理的变化。结果表明:在适度放牧条件下,长芒草种群具有补偿、超补偿性生长,而在重度放牧条件下,长芒草种群表现为欠补偿生长。

Studies on the effects of different grazing intensities on above-ground net primary production and root physiological changes of Stipa bungenan population in desert steppe on Sidunzi, Yanchi county of Ningxia. The results showed that the S. bungeana population appeared as compensatory and over-compensatory growth under the moderate grazing, hut undercompensation under heavy grazing intensity.