土壤侵蚀是土地退化的主要原因，也是导致生态环境恶化的最严重的问题，联合国粮农组织将其列为全球土地退化的首要问题。

Soil erosion is the main cause for the global land degradation and also is the key problem resulting in the ecological environment deterioration, so N. n.

youdao

土壤风蚀是全球性土地退化的主要原因之一，也是世界上许多国家和地区的主要环境问题之一。

Soil erosion is a global one of the major causes of land degradation, but also many of the world's countries and regions, one of the major environmental problems.

youdao

土壤风蚀是全球性土地退化的主要原因之一，也是世界上许多国家和地区的主要环境问题之一。

Soil erosion is a global one of the major causes of land degradation, but also many of the world's countries and regions, one of the major environmental problems.

youdao