The vegetation is unstable and it's covering in a year highly determined by precipitation in the year.

植被不稳定，植被盖度受当年降水情况影响较大；

youdao

The vegetation is unstable and it's covering in a year highly determined by precipitation in the year.

植被不稳定，植被盖度受当年降水情况影响较大；

youdao