在沙坡头人工植被固沙区，微生物结皮是伴随着植被区环境的日趋稳定而出现的。
In artificial vegetation-fixed sandy dunes, microbiotic crusts always occur with stabilizing of the environmental conditions in vegetation regions.
调查和试验分析结果表明，柠条群落是毛乌素沙地西南部半荒漠风沙区较稳定的人工固沙植物群落。
The analytical results of investigation and experiments showed that Caragana intermedia was a more stable artificial sand-fixation plant community at the southwest part of Maowusu desert area.
通过对陕北榆林风沙区防风固沙林体系的配置结构、树种组成、防风固沙效益、改良土壤的作用以及对天然植被的影响等的调查、观测和分析，结果表明：其配置结构较为合理，生态效益较为显著。
The effects of the sandbreak forest system in Yulin sandy area on the sandbreak, soil improvement and natural vegetation recovery were studied by investigating their configuring structure and species.
通过对陕北榆林风沙区防风固沙林体系的配置结构、树种组成、防风固沙效益、改良土壤的作用以及对天然植被的影响等的调查、观测和分析，结果表明：其配置结构较为合理，生态效益较为显著。
The effects of the sandbreak forest system in Yulin sandy area on the sandbreak, soil improvement and natural vegetation recovery were studied by investigating their configuring structure and species.
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