The carbon forms show how the tree dealt with water availability.

碳形态显示了这棵树是如何处理水分供应的。

But tree managers in this city east of Seattle are planting more sequoias because the trees can deal with the lack of rain and insects.

但在西雅图以东的这座城市，树木管理人员正在种植更多的红杉，因为这些树可以应对雨水的缺乏和昆虫。