The spatial distributing changes of land use showed that the farmland was mainly converted to forestland, grassland and orchard.
从空间分布变化来看，主要表现为耕地向林地、草地及园地转变。
Compared with traditional uncovered farmland, a greenhouse region changes the runoff, erosion, and affects generation of nonpoint source pollutants.
相对于传统的露天种植，塑料大棚改变了降雨径流和土壤侵蚀过程，进而影响面源污染物的产生。
In the past, much attention were paid only to the quantitative management of arable land while ignoring its' quality, whose changes affect the production capacity of farmland.
但是过去只简单的强调耕地的数量管理，而忽视了耕地质量变化对耕地生产能力的影响。
Water system changes, reclaiming farmland from lakes, etc, made a serious threat to flood and waterlogging control.
水系格局改变、围湖造田等这对于防洪除涝造成严重威胁。
Water system changes, reclaiming farmland from lakes, etc, made a serious threat to flood and waterlogging control.
水系格局改变、围湖造田等这对于防洪除涝造成严重威胁。
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