干旱荒漠区引水工程上水后，将原先的大片固定沙地和旱耕地转变为水浇地，并形成了新的绿洲。
Through transferring water to arid-desert region, it formed a new oasis, that many irrigation farmland came from early fixed sand dune and no-irrigation farmland.
因此可以推断，中国北方，特别是干旱荒漠区，大气气溶胶主要来自沙尘天气过程引起的地面沙尘释放。
According to the results above, in the northern China, especially in droughty and desert regions, the atmospheric aerosol mainly comes from the sand which is come into being with the dust weather.
同时对在半干旱荒漠草地大型项目区水土保持林体系的建设技术做了研究。
The study on construction technology of soil and water conservation forest system in large project district in semi arid desertification grasslands has been done.
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