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1 郑州市基本概况郑州市分属黄、淮两大流域,地势西高东低,山区面积2377km~2,占总面积31.9%,丘陵2254.5km~2,占30%,平原2814.7km~2,占37.8%。原有水土流失面积37.59万hm~2,已治理26.55万hm~2,实际保存22.00万hm~2,仍有15.00万hm~2需要治理。同时,由于经济的快速发展,每年还有500~1000hm~2的人为水土流失。按照目前的治理速度,还需20~30年。
1 Basic situation of Zhengzhou City Zhengzhou belongs to the two big valleys of Huanghe and Huaihe. The terrain is high in the west and low in the east. The mountainous area is 2377km ~ 2, accounting for 31.9% of the total area. The hills are 2254.5km ~ 2, accounting for 30% of the total, plain 2814.7km ~ 2 37.8%. The original soil erosion area 375,900 hm ~ 2, has been treated 265,500 hm ~ 2, the actual preservation of 220,000 hm ~ 2, there are still 150,000 hm ~ 2 need governance. At the same time, due to the rapid economic development, there are 500-1000hm ~ 2 man-made water and soil loss each year. In accordance with the current speed of governance, still need 20 to 30 years.