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对半干旱风沙区疏林式草牧场防护林的生物效益进行了研究。研究表明：疏林式草牧场防护林不仅可以提高疏林内牧草的地上部分生物量及地下部分生物量．同时可明显影响林内牧草地上部分生物量的生长动态。此外，疏林式草牧场防护林还可以提高林内牧草的质量。
The biological benefits of sparse forest grazing shelter in semiarid sandstorm area were studied. The research shows that the sparse forest grassland protection forest can not only improve aboveground biomass and underground biomass of herbage in sparse forests. At the same time, it can significantly affect the growth dynamics of some biomass on the pasture in the forest. In addition, the sparse forest pasture shelter can also improve the quality of forest pasture.