Swamp meadow had the highest community productivity, followed by alpine meadow, alpine steppe, and temperate steppe.
生产力从高到低的顺序为沼泽草甸>高寒草甸>高寒草原>温性草原。
Above the steppe zone there is no alpine desert, but alpine meadow.
草原带以上高寒荒漠不存在，高寒草旬则有一定发育。
The result shows that there are five main ecoregion types in Lhasa area, namely valley agriculture zone, mountain steppe, alpine meadow, snow and ice and rock, and lake.
结果表明，拉萨地区的主要生态环境类型包括河谷农业类型、山地草原类型、高山草甸类型及高山裸岩及冰雪类型。
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