第十章Which feature is not recognized as s of old-growth forests :（ ）。
答案:pure forests with one species as dominant tree
Deforestation era after European settlements caused how much percentage old forests losses in the USA。（ ）Main drivers for forest dynamics include。（ ）Ecosystems services provided by forests included:（ ）。In the US, aboriginal man used fire for what kind reason?（ ）Most of the US has fire-adapted forests/vegetation。（ ）In the history of US, wild-fire ignition sources are from lightning (100/sec), but not from native aboriginal man.（ ）欧洲人定居美洲后，火灾数量大量增加，因为他们喜欢野炊。（ ）研究火灾历史可以使用火烧疤（fire scar），但是不能使用湖底沉积物（lake sediment）的方法。（ ）美国东部森林里面鹿的描述正确的是：（ ）
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