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一、科左后旗土地沙化概况 科左后旗地处东经121°30′～123°42′,北纬42°40′～43°42′之间,位于内蒙古东部西辽河下流右岸,科尔沁沙地的东南部,面积为1.1535万平方公里,占科尔沁沙地面积的1/4。沙丘面积1181.4万亩,以固定、半固定沙丘为主,流动沙丘是许许多多、大大小小、东西走向的明沙带或班块间插其中。沙地内部被甸子、泡水、内流季节河及外流河所间隔,形成坨甸南北相间,东西纵行,而又互相交错的地形。
I. Land Desertification in Kezuohouqi Banner Kezuohouqi is located between 121 ° 30 ’~ 123 ° 42’ east longitude and 42 ° 40 ’~ 43 ° 42’ north latitude, and is located on the right bank of the Xiliao River downstream of Horqin in Inner Mongolia Southeast of the area of 115,500 square kilometers, accounting for the Horqin sandy land area 1/4. Dune area of 11.814 million mu, with fixed, semi-fixed sand dunes, mobile sand dunes are many, large and small, east-west direction of the Ming sand belt or inserted between blocks. Dianzi subsidence inside the sand, soaking water, inflow of seasonal river and the distance between the outflow of the river, forming a lump of Dian Dian inter-phase, longitudinal east-west, but staggered terrain.