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《Qinghai Prataculture》 2007-03
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DLSCUSSING ON CONTROLLZNG BLACKLAND BY ARTIFICIAL PLANTAION

IU Qing-Zhang(Qinghai Provincial center on Engineering Consults,Xining Qinghai China,810001)  
The blackland area in the Source of Three Rivers has reached 490.89×104hm accounting for 22.94% of pastureland in that area and this has a deep impact on the biological functions of the local pastureland so that it has become imperative for the implementation of the artificial plantation to treat the blackland area.Based on the previously-implemented scientific research projects,analysis of the lessons learned from them and the prevailing problems,it is recommended that the severely-degraded blackland area with its grade7°,the soil layer 30cm,0°C the accumulated temperature above 1000°C be turned out to be the artificial forage grass base while the severely-degraded blackland area with its grade7°,the soil layer 30cm,≥0℃ the accumulated temperature above 1000°C be turned out to be the artificial pastureland for grazing and the medium and severely-degraded blackland areas with their grades ranging from 7~25℃ be turned out to be a semi-artificial pastureland through the artificial enrichment.In the meantime,it is also recommended that the implementation mode of the artificial plantation of the blackland area focus on the ecological protection with the local herdsmen as the principle part and the establishment of the herdsmen's cooperatives to maximize the state investment benefit on the ecological construction through the contract management,the cooperative operation of both plantation,overall management,and utilization.
【CateGory Index】: S812
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