宁夏南部山区退化生态系统恢复途径

Restoration approaches for degraded ecosystem in Southern Mountain Region of Ningxia

宁夏南部地区大部分位于六盘山北麓,每年7,8,9 3个月降水量较多,加之山区属于黄土丘陵区,故而较容易出现水土流失等生态退化问题.当地人民在实践中创造了"88542"集流水平沟方式、"16542"集流水平沟方式、鱼鳞坑集流整地方式等集水模式来治理水土流失的问题.同时提出封育模式、淤泥坝模式,最后提出退化生态系统恢复的综合模型,以期对宁夏南部山区生态治理具有一定的借鉴作用.

The most part of Southern Mountain Region of Ningxia is located in the northern part of Liupan Mountains.As there is a great amount of rainfall in July,August and September every year,the region belongs to loess hilly area.Ecological degraded problems such as water and soil loss is easy to occur.The local people created rainfall collecting modes such as ＂88542＂,＂16542＂,＂fish scale pit＂ and so on from practice experiences to control water and soil erosion.At the same time,the enclosure and silt dam models were put forward.At last,the synthesis model for the restoration of degraded ecosystem was put forward.