At the same time herds cause wide-scale land degradation, with about 20 percent of pastures considered as degraded through overgrazing, compaction and erosion.

畜群同时造成大范围土地退化，其中20%的牧场因过度放牧、土壤板结和侵蚀而退化。

youdao

The process of mining coal and its combustion is associated with extensive air, water and land degradation.

煤炭开采及燃烧过程与大气、水的污染和土地退化密切相关。

youdao

Soil erosion can result in land degradation and sediment deposition of a river, where soil erosion is connected with some natural factors and human activities.

土壤侵蚀是引起土地退化和河流泥沙淤积的根源，其产生与各种自然因素和人类活动存在一定关系。

youdao

Meanwhile, the arable land that we do currently have is becoming more damaged, with soil erosion now causing 40 percent of land degradation worldwide, the FAO says.

CNN: All About: Food and the environment

With almost 1 billion undernourished people in the world, land degradation, and climate change, fundamentals appear to be in place to support food prices for the long run.

FORBES: Highly Leveraged Agriculture Will Keep Food Prices Volatile And High