Methods: To research Xenopsylla Cheopis distribution area and vector role, etc. in the laboratory and fieldwork.

方法通过鼠疫流行现场调查和实验室研究致痒蚤的分布范围、媒介作用的各项指标.

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The salinity tolerance range of this copepod extended effectively acclimation, and display its potential distribution area.

盐度驯化能有效地扩大该种桡足类的耐盐范围, 从而了解其潜在的地理分布范围.

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Larix principis - rupprechtii forest is an important and has a large distribution area in Luya mountain reserve.

华北落叶松林是芦芽山自然保护区的重要林型.

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