干旱区生态环境知识资源中心(Arid): 不同放牧压力下伊犁绢蒿构件生物量分配的变化

Arid

	不同放牧压力下伊犁绢蒿构件生物量分配的变化
其他题名	Effects of Different Grazing Intensities on the Distribution of Seriphidum transiliense Modular Biomass
	荀其蕾; 安沙舟; 孙宗玖; 梁娜; 杨合龙
来源期刊	草地学报
ISSN	1007-0435
出版年	2015
卷号	23 期号:2 页码:258-263
中文摘要	以新疆荒漠草地典型植物种伊犁绢蒿(Seriphidium transiliense)为研究对象,通过在生长季内多次采样方法(每30 d采样1次),比较不同放牧梯度下各构件生物量分配,各构件生物量和总生物量的相关性,以揭示伊犁绢蒿构件生物量分配对放牧压力的响应机制。结果表明:营养生长期根生物量分配比变化趋势为重牧>中牧>轻牧>对照,茎生物量分配比、叶生物量分配比变化趋势与之相反;而在生殖生长期则将更多地上生物量分配到生殖构件。Pearson相关系数表明:根生物量、茎生物量与总生物量极显著相关;叶生物量、生殖构件生物量与总生物量相关系数较低,在营养生长期和重度放牧下,生殖构件与总生物量成负相关。
英文摘要	The typical plant-Seriphidium transiliense in Xinjiang desert grassland were investigated with interval 30 days sampling. The distribution of modular biomass was compared among different grazing intensities, the Pearson correlation coefficient of modular biomass and total biomass was compared among different grazing intensities, in order to reveal the impact of grazing pressure on the distribution proportion of S. transiliensein modular biomass. The results showed that the change of root biomass was ordered as HG treatment>MG treatment>LG treatment>CK during vegetative growth period, whereas the distributions of stem biomass and leaf biomass were the opposite tendency. However, more above-ground biomass was distributed to reproduction component at reproduction growth period. Pearson correlation coefficient showed that there were the highly significant correlation between the root biomass, stem biomass and total biomass, but lower correlation between leaf biomass, stem biomass and total biomass;Reproductive modular biomass and total biomass showed negative correlation in vegetative period and heavy grazing grassland.
中文关键词	伊犁绢蒿 ; 构件生物量 ; Pearson相关系数
英文关键词	Seriphidium transiliense Modular biomass Pearson correlation coefficient
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ECOLOGY
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:5409433
来源机构	新疆农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/232386
作者单位	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, 新疆 830052, 中国
推荐引用方式 GB/T 7714	荀其蕾,安沙舟,孙宗玖,等. 不同放牧压力下伊犁绢蒿构件生物量分配的变化[J]. 新疆农业大学,2015,23(2):258-263.
APA	荀其蕾,安沙舟,孙宗玖,梁娜,&杨合龙.(2015).不同放牧压力下伊犁绢蒿构件生物量分配的变化.草地学报,23(2),258-263.
MLA	荀其蕾,et al."不同放牧压力下伊犁绢蒿构件生物量分配的变化".草地学报 23.2(2015):258-263.