季节性休牧对不同放牧强度下草地植物群落特征的影响
Impact of Seasonal Rest Grazing on Plant Community Quantity Characteristics under Different Grazing Intensities
古伟容 1张鲜花 1朱进忠 1孙宗玖 1穆肖芸 1王雪佼1
作者信息
- 1. 新疆农业大学草业与环境科学学院/新疆草地资源与生态重点实验室,乌鲁木齐 830052
- 折叠
摘要
[目的]研究通过季节性休牧对不同放牧强度下草地植物群落特征的影响,探讨适宜的放牧强度和休牧季节.[方法]试验在不同的放牧强度下设B1(春季休牧)、B2(夏季休牧)、B3(秋季休牧)控制小区,测定植被数量特征(盖度、高度、密度和产量).[结果]短期休牧对不同放牧强度下草地植物群落的盖度、高度、密度及地上生物量等数量特征影响差异不显著(P＞05)；对物种丰富度的影响未表现出明显的差异性(P＞0.05),但经过短期休牧后,与放牧利用草地相比,草地物种数有所增加；同时表明季节性休牧对草地植物群落主要物种重要值的影响也不大(P＞0.05).[结论]季节性休牧能促进草地修复,但短时间休牧能否达到预期效果,还需长时间的研究才能得出科学的结论.
Abstract
[Objective]This paper aims to explore the proper gazing intensities and grazing season by researching the impact of seasonal rest grazing on plant community quantity characteristics under different grazing intensities.[Method] Different grazing intensities B1 (spring deferral grazing),B2 (summer deferral grazing) and B3 (autumn deferral grazing) were set up in the control area to determine their plant community quantity characteristics such as their coverage,height,density and standing crop.[Result] The results show that after the short-term grazing,there was no significant difference (P ＞ 0.05) neither in quantity characteristics of grassland plant communities under different grazing intensities such as their coverage,height,density and standing crop nor in the species richness,but,compared with the grazing grassland,grass species number increased.It is found out that meanwhile seasonal deferral grazing grassland exerted little influence on the important value of species in plant communities (P ＞ 0.05).[Conclusion] Therefore,seasonal rest grazing can promote grassland restoration but whether the short-term rest grazing can achieve the desired results still needs a long-term study to draw a scientific conclusion.
关键词
休牧/不同牧压/植物群落/数量特征Key words
rest grazing/razing intensity/plant community/quantity characteristics引用本文复制引用
基金项目
国家公益性行业(农业)科研专项(200903060)
出版年
2013
国家科技期刊平台
NSTL
维普
万方数据