水土保持研究2017，Vol.24Issue(4)：247-251,258,6.
封育和放牧对典型草原地上植被的影响
Effects of Fencing and Grazing on Aboveground Vegetation
摘要
Abstract
Fencing and grazing are important factors in grassland ecosystem.Based on the investigation data,the influence of fencing and grazing on species composition,biomass,cover,density,shoot numbers and species diversity of aboveground vegetation had been examined in typical steppe on the Loess Plateau.Results showed that fencing and grazing had significant influence on vegetation structure.Compared with grazing,fencing significantly increased total cover and aboveground biomass,but significantly reduced the density of vegetation and shoot numbers.Fencing significantly increased grass biomass of aboveground vegetation,but significantly decreased forb biomass of aboveground vegetation.Fencing significantly reduced grass shoot numbers,but had no significant effects on forb shoot numbers.Fencing and grazing significantly affected species richness,Margalef index and Shannon-Wiener diversity index,but had no significant effect on Simpson index and Pielou index.Compared with grazing,fencing significantly reduced the species richness,Margalef index and Shannon-Wiener diversity index of aboveground vegetation.关键词
封育/放牧/地上生物量/物种多样性Key words
fencing/grazing/aboveground biomass/species diversity分类
农业科技引用本文复制引用
何晴波,赵凌平,白欣,崔伟..封育和放牧对典型草原地上植被的影响[J].水土保持研究,2017,24(4):247-251,258,6.基金项目
国家自然科学青年基金(31302013) （31302013）
河南省教育厅科学技术研究重点项目(13A2302812013) （13A2302812013）
河南科技大学博士启动资助项目(09001634) （09001634）
