吉林省土地沙化趋势的初步研究

吉林省西部地区,由于所处地理位置和气候特征,形成大量风沙土,春季多风季节,风沙危害,严重影响春耕播种。长期以来,我省投入了大量人力、物力和财力,采取措施,防风固沙,为检验数十年防风固沙的实际效果,我们利用不同时期(1959年和1978年)航片,调查研究沙土动态状况,即是否进一步产生沙化,以期为吉林省农业环境规划及建设打下良好基础。

Preliminary Studies on Land Desertification Trend in Jilin Province

Affected by geography and local climate in the west part of Jilin Province,a large quantity of aeolian sandy soil was formed.And in the windy spring,plowing and sowing was affected seriously due to sand blown by wind.In the long term,a great deal manpower,material resources and financial resources were devoted to windbreak and sand-fixation.In order to checking up the practical effect of windbreak and sand-fixation in the several decades,we use aerial image of different period(1959 and 1978) to investigate sandy soil dynamic trend for finding out if the deep desertification was formed,and which laid the good foundation for agricultural environment plan and construction in Jilin Province.