吉林省中西部沙地林草田复合生态系统建设的研究

吉林省中西部平原区的土地沙漠化现象较为普遍,由于人类的经济活动,沙地生态系统的稳定性遭到破坏,并向着半流动、流动沙地的方向转化。因此,采取科学有效的治理措施,进行沙地的生态建设,是一项具有战略意义的国土整治课题。笔者利用四年的时间,在吉林省通榆县新华村进行温带半湿润易旱地区沙地综合治理的试验研究,提出了该地区沙地农业生态经济建设的原则。

An Approach to the Construction of Forest-grassland-farmland Complex Ecosvstem in Sandy Land of West-central Jilin province.

This paper applies system theory and engineering techniques to establish a forest-farmland-grassland complex ecosystem by making up different temporal and spatial combination ofperennial woody plant,grass and crops according to the unity of ecology and economics.Itaims to find new ways to fully use land,space,light,temperature,water and fertilizers andraise productivity of the sandy land.Principles and policies for agroecological constructionin sandy land of semi-humid temperate zones are put forward.