All the resultant activities have tended, on balance, to reduce tree cover and increase grassland.

总的来说，所有由此产生的活动都趋向于减少树木覆盖，增加草地。

youdao

They are now demanding a big reduction in the stipulated area of tree cover on private land.

现在，他们要求对私人用地的树木覆盖率进行大幅削减。

youdao

With the tree cover gone, every rainy season sees more of the precious topsoil washed away into the lake.

随着植被覆盖面的消失，每次雨季都将更多的宝贵的表土层冲到湖里去。

youdao

Researchers using satellite images found at least ten percent tree cover on more than one billion hectares of farmland.

VOA: special.2009.09.01

The study found that climate conditions alone could not explain the amount of tree cover in different areas.

VOA: special.2009.09.01

The study found the most tree cover in South America.

VOA: special.2009.09.01

The 510 is suited for the most challenging conditions, such as canyons and adventures with heavy tree cover.

ENGADGET: Edge 510 and 810 cycling computers appear on Garmin's web store (update: hands-on photos)

He says that tree cover is a good first step to keeping cooling costs down in the South.

NPR: North Carolina Family Takes Carbon Challenge

Ancient woodlands are defined as any area which has been under continuous tree cover for at least 400 years.

BBC: Trees being felled in Yorkshire woods