三江源生态逆向演变现状调查及防治对策

Sanjiangyuan Ecological Reverse Evolution Survey and Countermeasures

对三江源农牧业用地生态变化进行了调查,提出了相应的治理对策。结果发现,三江源草地资源,在人为和自然因素的作用下,正在发生逆向演替,草地优势种群演化、草群结构变化、草地生产力下降,使得草地可利用面积减少,导致天然草地退化和载畜能力下降,生态"三化"问题加剧,已对农牧业经济的发展形成严重制约。

The ecological variation of agriculture and husbandry land in Sanjiangyuan was investigated,the corresponding control measures were put forward. The results showed that Sanjiangyuan grassland resources,under the influence of anthropogenic and natural factors,the reverse is happening succession,the evolution of the dominant populations of grassland,grass group structure change,grassland productivity declined, making available grassland area decreased,resulting in a natural grassland degradation and decline in carrying capacity aggravated ecological ＂ three＂ problem,which has been a serious constraint on agricultural economic development.