摘要
在自然因素和人为因素的影响下,吉林西部农业生态环境问题日益突出,土地退化严重,直接表现为“三化”(即土地盐碱化、草原退化和土地沙化)。盐碱地面积已增至160.69104 hm2,与50年代相比,盐碱地面积增加52.79104 hm2,平均每年增加1.35104 hm2,年递增率1.3%;建国初期,嫩平原吉林省西部草地面积252.9104 hm2,到了1999年,草地面积仅为122.3104 hm2,年递减率约2.6%,而且草原的质量也在下降。目前,沙地面积68.6104 hm2,土地沙化局面已基本控制。文章系统分析农业生态环境恶化的原因和驱动机制,提出综合防治对策和措施。
Agro-environment of the west of Jilin province is deteriorating under the impact of natural and human factors, which is directly presented by land saline-alkalization, grassland degeneration and land desertification. At present, the area of saline-alkalization land is up to 1.6069106 hm2, it increases by 1.35104 hm2 per year in comparison with that of 1950s; The area of grassland is 1.223106 hm2, and the annual descending rate is about 2.6%; but land desertification has been controlled effectively. In this paper, the causes and driving mechanisms of Agro- environment deterioration are systemically analyzed, and comprehensive control countermeasures are put forward, in order to promote the agricultural sustainable development.
出处
《生态环境》
CSCD
2004年第2期290-292,共3页
Ecology and Environmnet
基金
中国科学院知识创新工程重大项目(KZCX1-SW-19-2-01)
吉林省科技发展引导项目(20030221)
关键词
农业生态环境
土地盐碱化
草原退化
土地沙化
吉林西部
agro-environment
land saline-alkalization
grassland degeneration
land desertification
the west of Jilin province
