科尔沁地区沙质草地退化原因分析——以奈曼旗为例

Primary Study on Sandy Grassland Degradation of Horqin in Case of Naiman County

为探讨沙质草地退化的原因,以便为植被恢复与重建奠定科学基础,在调查对比20世纪80年代初期与21世纪初期,科尔沁地区奈曼旗沙质草地生产力和植被特征等方面变化的基础上,通过对奈曼旗1963-2002年40年来气候变化特征以及1947-2002年56年来畜牧业发展状况的研究,综合剖析了导致该地区沙质草地退化的根本原因。结果表明:该地区沙质草地的迅速退化,是气候变化和人类活动共同胁迫的结果;人类活动,特别是不合理的畜牧业生产方式,是导致该地区沙质草地生态系统劣变的主要因素,气候变化加剧了系统劣变的程度。

By comparing the grass productivity and plant characteristics in early 1980s and early 2000s in Naiman County in Horqin Sandy grassland, we analysed the degradation of sandy grassland which existed in this place. On the study of climate changes between 1963 and 2002 and development of animal husbandry between 1947 and 2002, the main reasons for the degradation of sandy grassland was analysed . The results showed that the rapid degradation of sandy grassland resulted in both the changes of climate and human activities, especially irrational animal husbandry mode, the changes of climate accelerated the degradation of eco-system of sandy grassland.