Job Recruitment Website - Ranking of immigration countries - Compared with the Qin and Han dynasties, why is the climate in northwest China getting drier and drier?
Compared with the Qin and Han dynasties, why is the climate in northwest China getting drier and drier?
First of all, trace back to the ecological environment of northwest China in the pre-Qin period;
Secondly, it introduces the grand occasion of northwest agricultural development in Qin and Han dynasties by region;
Thirdly, the ecological environment problems brought by agricultural development are analyzed in detail.
Fourthly, evaluate the ecological and environmental consequences of agricultural development in Qin and Han dynasties from both positive and negative aspects, and how to learn the lessons of agricultural development in Qin and Han dynasties in contemporary western development.
The increase of cultivated land is mainly concentrated in the loess hilly area with serious soil erosion, with a net increase of 272x 10000 square meters, accounting for 69% of the net increase of cultivated land in the loess plateau, which makes these areas fall into the economic and ecological poverty of "getting poorer and poorer".
Due to the unreasonable blind behavior of human beings to nature, soil erosion has been aggravated. Soil erosion is serious and harmful, and it is also one of the reasons for climate drying.
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