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Position: Home > Articles > Influence of Different Stocking Rates on Underground Biomass and Net Primary Productivity on Stipa krylovii Steppe in Inner Mongolia Chinese Journal of Grassland 2009,31 (3) 26-29

不同放牧率对内蒙古克氏针茅草原地下生物量及地上净初级生产量的影响

作  者:
锡林图雅;徐柱;郑阳
单  位:
甘肃农业大学草业学院;中国农业科学院草原研究所/农业部草原资源与生态重点开放实验室
关键词:
放牧率;地下生物量;地上净初级生产量
摘  要:
通过不同放牧率试验探讨放牧对内蒙古克氏针茅草原地下生物量和地上净初级生产量的影响,结果表明:0~30cm地下生物量随着放牧率的增加而降低,不同放牧率对地下生物量的影响主要发生在0~10cm土壤层;随着放牧率的增大,地上净初级生产量呈先增加后减少的变化趋势,中度放牧率使净初级生产量和家畜采食量均达到最佳水平,即1.75只羊/hm2是适宜的放牧率。
译  名:
Influence of Different Stocking Rates on Underground Biomass and Net Primary Productivity on Stipa krylovii Steppe in Inner Mongolia
作  者:
XILIN Tu-ya1,2, XU Zhu2, ZHENG Yang1,2(1.College of Grassland Science, Gansu Agriculture University, Lanzhou 730070, China; 2.Grassland Research Institute CAAS, Hohhot 010010, China)
关键词:
Stocking rate; Underground biomass; Net primary productivity
摘  要:
Effects of different stocking rates on underground biomass and net primary productivity in Inner Mongolia steppe were studied, the results showed that the biomass of 0~30cm in depth was decreased along with the increase of stocking rates, the influence mainly occurred in 0~10cm soil layer. Except the contract, net primary productivity of other stocking rates was increased first and then decreased with the stocking rates increased, the middle stocking rate can make the net primary productivity and livestock grazing to the best level, so the stocking rate 1.75 sheep/hm2 was optimal.

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