Early and late frost, Dedrolimus superans, sawfly and needle cast of larch could reduce the quality and quantity of foods of larch casebearer and had indirect effects on its population density.

早霜、晚霜、松毛虫、叶蜂及落叶松早期落叶病等都能直接影响鞘蛾食物的质量和数量，进而间接地使鞘蛾种群密度降低。

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Because of its vast tracts of virtually uninhabited northern forest, Canada has one of the lowest population density in the world.

加拿大是世界上人口密度最低的地区之一，因为其广阔的北方森林地区实际上无人居住。

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To accommodate the rapid influx of population, city council plans to encourage high density housing in its town centre area which lies between Blundell and Bridgeport on both sides of No. 3 Road.

为了容纳快速涌入的人口，市议会计划鼓励在市中心地区第三大道边上的布伦德尔和布里奇波特之间建造高密度地住宅。

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Yet its population density is lower than that of Los Angeles.

ECONOMIST: So long as it doesn��t cost too much

The risk of loss of lives and economic disaster in the southern Mediterranean is high due to strong population density along its coasts: around 150 million people concentrated in 46, 000 kms of coastline, 110 million of them living in cities bordering the sea and some 200 million tourists visiting the area every year.

UNESCO: Indigenous Peoples