论文部分内容阅读
原州区地处黄土高原,境内地貌类型多样,丘陵、山地、山坡地占总面积的近80%,3506平方公里的总面积,水土流失的面积就达2409平方公里之多,占到总面积的68.7%,土壤主要以黑垆土、湘黄土为主,年侵蚀模数在每平方公里7000至8000吨之间。原州区是典型的山区,靠山吃山,山里人祖祖辈辈在山上放牧牲口,破坏了植被,使水土不断流失,更加剧了贫穷和落后。再让我们看一看这些虽然枯燥,但却最能说明问题的数字吧:2003年年底,全区有林地面积171万亩,其中封山育林33万亩,水源涵养林42万亩,水土保持林45.4万亩,以枸杞为主的经济林7.5万亩,农田防护林2万亩,退耕地造林41.1万亩。林木覆盖率12.7%。2000至2003年全区完成退耕还林工程96.9万亩,涉及14个乡镇209个行政村50182户退耕户,产生了较为明显的生态、社会和经济效益。已累计发放退耕补助粮7280万公斤,发放补助现金1456万元,农民人均从退耕还林中获得直接经济收入295.6元。2003年年底,林业总产值10283万元,占农业总产值的18.9%,农民人均林业收入445元。随着退耕还林工程的实施,原州区林业局根据全区气候、土壤等自然条件,将林业工作融人全区经济发展
Yuanzhou District is located in the Loess Plateau, the territory of various types of geomorphology, hilly, mountainous, hillside accounted for nearly 80% of the total area of 3506 square kilometers of the total area of soil erosion amounted to more than 2409 square kilometers, accounting for the total area Of 68.7%. The soil is mainly dominated by black loam soil and Xiang loess soil. The annual erosion modulus is between 7,000 and 8,000 tons per square kilometer. Yuanzhou District is a typical mountainous area, where people eat their own mountains. The ancestors of mountain families graze livestock in the mountains, destroying the vegetation, causing continuous loss of soil and water, further aggravating poverty and backwardness. Let us take a look at these although boring, but the best figure to explain the problem: the end of 2003, the region has 1.71 million mu of forest area, of which 330,000 mu of afforestation, 420,000 mu of water conservation forest, soil and water conservation forest 45.4 Acres, 75000 acres of economic forest dominated by Chinese wolfberry, 20,000 acres of farmland shelterbelts, afforestation 41,100 acres of land. Forest coverage rate of 12.7%. From 2000 to 2003, the region completed 96.9 hectares of the project of returning farmland to forestry and involved 50,182 relocatees in 209 administrative villages in 14 townships, resulting in obvious ecological, social and economic benefits. A total of 72.8 million kilograms of grain for returning farmland have been granted and cash subsidies of RMB14.56 million have been distributed. The average per-capita income of farmers has been 295.6 yuan from the conversion of farmland to forestry. By the end of 2003, the total output value of forestry was 102.83 million yuan, accounting for 18.9% of the total agricultural output value. The per capita forestry income of farmers was 445 yuan. With the implementation of the Project of Conversion of Cropland to Forestland, Yuanzhou District Forestry Bureau will integrate forestry work into the economic development of the whole district according to the natural conditions such as climate and soil in the whole region