|
|||||
|
|
| 江河源头不同程度退化小嵩草高寒草甸草场的封育效果 | |
| 引用本文： | 李青云,李建平,董全民,马玉寿,来德珍,赵新全,施建军,王柳英.江河源头不同程度退化小嵩草高寒草甸草场的封育效果[J].草业科学,2006,23(12):16-21. |
| 作者姓名： | 李青云 李建平 董全民 马玉寿 来德珍 赵新全 施建军 王柳英 |
| 作者单位： | 1. 青海省农牧厅,青海,西宁,810008 2. 中国科学院西北高原生物研究所,青海,西宁,810002;青海省畜牧兽医科学院,青海,西宁,810003 3. 青海省畜牧兽医科学院,青海,西宁,810003 4. 青海省果洛州草原站,青海,大武,814000 5. 中国科学院西北高原生物研究所,青海,西宁,810002 |
| 摘 要： | 通过对位于江河源头达日县的不同退化程度小嵩草Kobrecia parva高寒草甸3年的封育研究,结果表明:围栏封育对不同退化程度小嵩草高寒苹甸草场的总盖度及不同经济类群植物的益度、总地上生物量、不同经济类群植物的地上生物量及其组成、退化群落对未退化群落(原生植被)的相似性系数均有显著的影响。经过3年的封育后,草地植被总盖度、总地上生物量、禾本科和莎草科植物的盖度和地上生物量、群落的相似性系数均有不同程度的增加。轻度退化草地封育2-3午后,草地的优良牧草及可食杂类草不论是盖度还是地上生物量均高且占绝对优势,草地即可得到恢复;中度退化草地要靠封育恢复需要的时间可能会更长一些;重度和极度(黑土滩)退化草地,必须通过建植人工草地、结合补播、施肥、毒杂草防除等其它措施改良,以治本的工程措施为主。 |
| 关 键 词： | 江河源头 退化小嵩草高寒草甸 地上生物量 盖度 相似性系数 |
| 文章编号： | 1001-0629（2006）12-0016-06 |
| 收稿时间： | 11 7 2005 12:00AM |
| 修稿时间： | 2005-11-07 |
Study on the effect of fencing on Kobrecia parva alpine meadow pasture at different degrading stages in Yangtze and Yellow River Headwaters |
|
| LI Qing-yun,LI Jian-ping,DONG Quan-min,MA Yu-shou,LAI De-zhen,ZHAO Xin-quan,SHI Jian-jun,WANG Liu-ying.Study on the effect of fencing on Kobrecia parva alpine meadow pasture at different degrading stages in Yangtze and Yellow River Headwaters[J].Pratacultural Science,2006,23(12):16-21. | |
| Authors: | LI Qing-yun LI Jian-ping DONG Quan-min MA Yu-shou LAI De-zhen ZHAO Xin-quan SHI Jian-jun WANG Liu-ying |
| Institution: | 1. Qinghai Bureau of Animal Husbandry and Agriculture, Xining 810008, China; 2. Northwest Plateau Institute of Biology, Chinese Academy of Sciences, Xining 810002, China; 3. Qinghai Academy of Animal and Veterinary Sciences, Xining 810003, China; 4. Guoluo Prefecture Grassland Station, Dawu 814000, China |
| Abstract: | Fencing experiment had been conducted on a Kobrecia parva alpine meadow pasture of different degrading degrees in Dari county in Yangtze and Yellow river headwaters for three years. The result showed that fencing had an obvious effect on total cover and the cover of the plants of different economic groups, total aboveground biomass, the aboveground biomass of the plants of different economic groups and their composition, similarity coefficient for degraded community vs. degraded original community in K. parva alpine meadow pastures in different degrading stages. Whatever in light, moderate, heavy or extremely degraded grassland, all these indices including total cover and the cover of Gramineae and Cyramineae plants, total aboveground biomass and the aboveground of Gramineae and Cyramineae plants, similarity coefficient of community, increased through fencing three years. Moreover, lightly degraded grassland could be restored after fencing for 2 -3 years because good forage (Gramineae Cyramineae ) had predominated in the cover and aboveground biomass in the vegetation. Moderately degraded grassland would require longer time to recover after fencing than lightly degraded grassland. However, as for heavily and extremely degraded grassland, establishing sown grassland, and and combining seeding, fertilizing, controlling toxic weeds and other measures and technology would be required to effect a permanent cure. |
| Keywords: | Yangtze and Yellow river headwaters degraded Kobrecia parva alpine meadow aboveground biomass cover similarity coefficient |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |