摘要
对青海泽库县草地资源及草地环境进行综合分析,认为由于受海拔的影响,气候寒冷,草地类型和草地植物以高寒类型为主;热量不足限制了牧草的生长和高产量的形成.自然因素和草地不合理利用、虫鼠害的交替作用,使近50%的草地已发生不同程度的退化."黑土滩"1982~1998年16年间增加了1.518×104hm2,平均每年增加近1 000hm2;鼠虫害危害面积为30.22×104hm2,损失牧草3.49×108kg,很大程度上影响了草地资源的可持续利用和草地环境的良性循环.此研究针对当地草地资源及草地环境现状,提出区域草地恢复的途径.
This paper is the analysis about the grassland resource and grassland environment in Zeku County Qinghai Province.The climate is cold because of the height above sea-level.The type of the grassland and the plants of the grassland are mainly belong to alpine type.The insufficient heat restricts the growth of herbage and to form the high yield.The unreasonable use,the natural factor and alternate function of the insect and mouse make about 50% of the grassland degenerated."Black-soil-type" grassland increased...
出处
《西北民族大学学报(自然科学版)》
2007年第4期43-47,共5页
Journal of Northwest Minzu University(Natural Science)
基金
2000年教育部重点科学技术研究项目"西北民族地区生态环境建设富民工程实验研究"
00247
关键词
草地资源
草地环境
退化
恢复
grassland resources
grassland environment
degeneration
resume