Artificial grasslands were established between the gravel sand barriers and tree shelterbelts.
砾石沙障和防护林带间建设人工草地。
It was also found that the content of soil organic matter increased with the increase of degradation, and the content in the enclosure and artificial grassland was lower that other grasslands.
随着草地退化程度的增加表层有机质含量呈逐渐增大的趋势，封育草地和人工种草地的含量相对较低。
It was also found that the content of soil organic matter increased with the increase of degradation, and the content in the enclosure and artificial grassland was lower that other grasslands.
随着草地退化程度的增加表层有机质含量呈逐渐增大的趋势，封育草地和人工种草地的含量相对较低。
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