Summarize the methods to estimating the yield of crop, and discuss the methods to estimating the yield of salt field by remote sensing, combining the process of salt field production.
6．总结农作物遥感估产方法，结合海盐生产过程，就盐田遥感估产方法进行探讨。
参考来源 - 盐田水体的遥感分类方法研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Every monsoon their salt fields are washed away, as the desert turns into sea.
季风来临的时候，雨水把盐田冲毁，沙漠变成泽国。
Thus, human activities such as opening up salt fields and reclaiming tidal flats have impacted the coastal evolution processes remarkably.
开辟盐田和围垦造陆工程等人类活动，对海岸演变的影响显著。
The salt fields were just located behind these salt hills, which were many square ponds linked one by one just like a vast expanse of farmlands.
盐山后面就是盐田了，盐田是挖出来的方形池子，这种池子有很多块，一望无际，就像一片片田地一样。
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