The factors and countermeasures of man - made soil and water loss 人為水土流失因素及其防治措施研究
Status and counterpart measures to the new man - made soil erosion in yong ' an city 永安市人為造成新的水土流失現(xiàn)狀及其防治對策
The results showed that : total area of soil and water loss decreased after 1987 , but area of strong erosion grade increased and new man - made soil and water loss accelerated ; 9 of the total 11 regions in zhejiang showed the same changing tendency as the whole province 結(jié)果表明: 1987年以后水土流失總體上有所好轉(zhuǎn),水土流失總面積減少,但強度以上的流失面積有增加趨勢,新的人為水土流失未得到有效控制,且有加速趨勢。