摘要
在三江源区对"黑土滩"四龄垂穗披碱草人工草地进行围栏禁牧封育,封育期为一年,在8月中下旬进行群落调查,以冷季放牧利用的四龄人工草地作为对照,比较分析围栏内外样地的群落特征和地上生物量。结果表明:禁牧封育使"黑土滩"四龄垂穗披碱草人工草地地上生物量和物种数明显降低,同时垂穗披碱草的物候期被延迟。
The artificial grassland which consisted of fourth-year Elymus nutans of ＂Back soil land＂in the region of three-fives sources was fencld with paddok and forbade grazing for one year. The fourth-year artificial grassland which was grazed in winter was the control grassland. The community characteristics were investigated during the middle August. The grassland community characteristics and aboveground biomass were compared and analyzed in both side of the fencl . The results showed that the ahovegnmnd biomass and the quantity of species in the artificial grassland whith consisted of fourth-yeas Elymus nutans in ＂Back soil land＂were significantly decreased and the phenological period of Elymus nutans was delayed.
出处
《青海畜牧兽医杂志》
2008年第2期8-9,共2页
Chinese Qinghai Journal of Animal and Veterinary Sciences
基金
2005年度青海三江源自然保护区生态保护和建设总体规划科研课题及应用推广招标项目(2005-SN-1)
国家"十一五"科技支撑计划重大项目(2006BAC01A02)
关键词
禁牧封育
“黑土滩”人工草地
生物量
群落结构
Forbidden grazing and exclusion grassland
Artificial grassland in ＂Back soil land＂
Biomass
Community structure
