论文部分内容阅读
一、防沙治沙工作总体情况宁夏地处祖国西北地区、黄河中上游,面积6.64万平方公里,东、西、北三面分别被毛乌素、腾格里、乌兰布三大沙漠、沙地包围。宁夏干旱少雨、缺林少绿,生态环境十分脆弱,全区80%的地域年降雨量在300毫米以下。宁夏是全国荒漠化和沙化较为严重的省区,第五次荒漠化监测结果显示,截至2014年,宁夏荒漠化土地总面积278.90万公顷,占国土面积的53.68%;沙化土地总面积112.46万公顷,占国土总面
First, the overall situation of desertification prevention work Ningxia is located in the northwestern region of the motherland, the middle and upper reaches of the Yellow River, an area of 66,400 square kilometers, east, west and north sides wereMuosu, Tengger, Ulan Buh three deserts, sand surrounded . Ningxia is arid and dry, lacking less green forest, ecological environment is very fragile, 80% of the region’s annual rainfall below 300 mm. Ningxia is a province where desertification and desertification are more serious in China. The fifth desertification monitoring shows that as of 2014, the total area of desertified land in Ningxia is 2.789 million hectares, accounting for 53.68% of the total land area. The total area of desertified land is 1.1246 million hectares, Total surface