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Chinese Journal of Grassland
2008,30
(6)
94-98
杜鹃灌丛草地响应休牧的植被特征变化
作 者：
曹文侠;张德罡;徐长林;师尚礼
单 位：
甘肃农业大学草业学院/草业生态系统教育部重点实验室/中-美草地畜牧业可持续发展研究中心
关键词：
杜鹃灌丛草地;休牧模式;生态恢复;植被变化
摘 要：
初步探讨了不同休牧模式恢复杜鹃灌丛草地的地上生态过程。结果表明,全生长季休牧对灌丛草地灌木片层产生了积极影响,柳、鬼箭锦鸡儿和金露梅等饲用灌木的高度有明显恢复;苔藓和地面枯草存量增加,灌下微生境趋优;灌间草本群落高度、盖度和生物量有不同程度增加;不同休牧模式在生长季各阶段的表现存在差异,8月份草地禾草+莎草与杂类草的产草量之比:全生长季休牧、枯草期轻牧(全年1.67羊单位/hm2)为1.61,全生长季休牧、枯草期重牧(全年3.49羊单位/hm2)为0.73,对照为0.66,全生长季休牧草地的草群得到优化;枯草期高强度放牧也会影响杜鹃灌丛草地的生态恢复。
译 名：
Changes of Vegetation Characteristics of Azalea Shrubland after No Grazing
作 者：
CAO Wen-xia,ZHANG De-gang,XU Chang-lin,SHI Shang-li(Grassland Science College of Gansu Agricultural University;Grassland Ecosystem Key Laboratory of Ministry of Education;Sino-U.S.Research Center for Sustainable Grassland and Livestock Management;Lanzhou 730030,China)
关键词：
Azalea shrubland;No grazing patterns;Ecological restoration;Vegetation change
摘 要：
The ecological processes of restoration to azalea shrubland under different no grazing patterns were studied.The results showed that no grazing in whole growing season had a positive effect on fodder shrubs,the height,coverage and biomass of herbage among shrub spaces increased in various degrees,and the composition of herbage has been optimized(gramineous + sedge increased); bryophyte community height and coverage increased significantly,litter layer were better preserved and function of water holding were improved;high-intensity grazing will also defer the shrubland ecological restoration.
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