vegetation activity的意思|示意

Since 2007, frequent acid rain showers caused by activity at the volcano killed or damaged much of the vegetation to the southwest of the summit, leaving the area brown and orange.

2007年以来由于火山的活动，频繁降下的酸雨破坏了山顶西南部大片植被，并致其死亡，因此在照片上呈现棕色和橘色。

The raising of livestock is a major economic activity in semiarid lands, where grasses are generally the dominant type of natural vegetation.

在半干旱地区，草地通常是最主要的天然植被，而该地区主要的经济活动是家畜饲养。

The formation of rocky desertification is influenced by geology, climate, hydrology, vegetation and human activity.

石漠化形成和影响的因素主要有地质、气候、水文、植被和人类活动五个方面。