摘要
经调查,兴海县退化草地面积占可利用草地面积的22.31%。其中,严重退化草地面积为1.14×104hm2,中度退化草地8.8×104hm2,轻度退化草地10.97×104hm2;草地退化使草地产草量从1982年的2760kg/hm2下降到2002年的1575kg/hm2,下降了42%;掠夺式放牧、鼠虫害严重、毒杂草蔓延、"四滥"不禁及人口快速增长是导致草地退化的主要原因;建议采取依法治草,加强草地建设,科学合理利用草地,加强教育等措施保护草地。
From investigation, degraded grassland was 22.31 percent point. Severe degraded grassland area was 1.14 - 104 hm2, moderate degraded grassland area was 8.8 × 104hm2, mild degraded grassland area was 10.97 × 104hm2. The yield reduced from 2760 kg/hm2 to 1575 kg/hm2 from 1982 to 2002 ,it was reduced 42 percent point. It was the main reasons of degraded grassland for over - stocking, rodents and pests, weeds, population pressure. Some suggestions of protected grassland are pointed out.
出处
《青海草业》
2012年第2期44-46,共3页
Qinghai Prataculture
关键词
草地
退化
防治对策
Grassland
Degradation
Countermeasures
