Northern and western mountains by the Paleozoic to Mesozoic and Cenozoic sandstone, composed of limestone and shale, erosion significantly, cutting deep, steep mountains, the relative height difference of 400 - 600 meters, the slope often 30 - 40 degrees. 200 meters south of the hilly terrain is gentle, rounded slope shape, slope of 15 degrees Celsius in general, more open valley. 50 meters above sea level plain below two hundred and fifteen square kilometers, accounting for the total area of the city's 9.4 percent.
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Land use patterns? Significantly affect the runoff and soil erosion, and unreasonable human land use is the main reasons of water and soil lost.
土地利用方式可以明显地影响径流和土壤侵蚀，人类不合理的土地利用是水土流失发生的主要原因之一。
Soil erosion and fertilizer application made soil acidified in slope field, soil acidification increased significantly with depth.
水土流失和化肥的施用使得坡耕地土壤发生了酸化，随土层的加深而酸化加重。
Primary benefits are a decreased rate of soil erosion; reduced need for equipment, fuel, and fertilizer; and significantly less time required for tending crops.
该耕作方法主要的好处是可减少土地受到腐蚀的机率，减少机械、燃料和肥料的使用，有效减少田间管理的时间。
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