干旱区生态环境知识资源中心(Arid): 单次小降雨(≤5 mm)事件对4种典型荒漠一年生草本植物生长和繁殖的影响

Arid

	单次小降雨(≤5 mm)事件对4种典型荒漠一年生草本植物生长和繁殖的影响
其他题名	Effects of single small rainfall events(≤5 mm)on the growth and reproduction of four typical desert annual herbaceous plants
	任亦君; 席璐璐; 缑倩倩; 宋冰; 王国华
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2021
卷号	41 期号:4 页码:1000-694X
中文摘要	选取河西走廊荒漠绿洲过渡带典型一年生植物禾本科狗尾草(Setaria viridis)、虎尾草(Chloris virgata)和藜科雾冰藜(Bassia dasyphylla)、刺蓬(Salsola ruthenica)为研究对象,分别在拔节期/展叶期、开花期和果熟期模拟小降雨事件减少,分析单次小降雨对一年生草本植物生长和繁殖的影响。结果表明:(1)拔节期/展叶期单次小降雨减少导致4种一年生草本植物根系生长发生显著变化,主要表现为根长显著减小,纵向生长受到抑制,而地下生物量显著增加,以侧根生长为主。(2)不同生长阶段单次小降雨减少,4种一年生草本植物叶片数和地上生物量减少但未达到显著水平,仅在拔节期/展叶期减少小降雨时,株高降低显著。(3)不同生长阶段单次小降雨减少,根冠比增加,但根冠比的值依然较低(0.196-0.506),地下生物量依然远小于地上生物量的分配,说明一年生草本植物将更多的生物量用于地上部分的生长。(4)拔节期/展叶期单次小降雨减少会导致拔节期/展叶期延长,开花期和果熟期推迟且持续时间缩短,并最终导致一年生草本植物种子生物量减少。
英文摘要	We selected four typically annual gramineous plant Setaria viridis,Chloris virgata,and chenopodiaceous plant Bassia dasyphylla,Salsola ruthenica as study subjects in a typical desert-oasis ecotone in the Hexi Corridor,and simulated the reduction of small rainfall events during jointing stage / leaf unfolding stage,flowering stage and fruit ripening stage,and analyzed the effects of a single small rainfall on the growth and reproduction of annual herbaceous plants. The results of the study showed that:(1)A single small rainfall reduction in the jointing stage / leaf unfolding stage led to significant changes in the root growth of four annual herbaceous plants,which were mainly manifested as the root length was reduced significantly,and the longitudinal growth was inhibited,but the underground biomass was significantly increased,and mainly due to lateral root growth.(2)A single small rainfall at different growth stages decreased,and the number of leaves and above-ground biomass of four annual herbaceous plants decreased but did not reach a significant level,only when small rainfall was reduced during the jointing stage / leaf unfolding stage,the plant height decreased significantly.(3)A single small rainfall at different growth stages decreased ,and the root-shoot ratio increased,but the value of the rootshoot ratio was still in the low range of 0.196-0.506,and the distribution of underground biomass was still far less than the above-ground biomass,which indicated that annual herb plants used more biomass for the growth of above-ground.(4)A single small rainfall reduction during the jointing stage/leaf unfolding stage led to the jointing stage/ leaf unfolding stage to be prolonged,and the flowering stage and fruit ripening stage were delayed, and the duration was shortened,and led to the reduction of annual herbaceous plants seed biomass ultimately.
中文关键词	一年生草本植物 ; 不同生长阶段 ; 小降雨事件 ; 生长 ; 繁殖
英文关键词	annual herbaceous plants different growth stages small rainfall events growth reproduction
类型	Article
语种	中文
国家	中国
收录类别	CSCD
WOS类目	Plant Sciences
CSCD记录号	CSCD:7021447
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/365462
作者单位	任亦君, 山西师范大学地理科学学院, 临汾, 山西 041000, 中国.; 席璐璐, 山西师范大学地理科学学院, 临汾, 山西 041000, 中国.; 宋冰, 山西师范大学地理科学学院, 临汾, 山西 041000, 中国.; 缑倩倩, 山西师范大学地理科学学院;;中国科学院西北生态环境资源研究院, ;;中国科学院沙漠与沙漠化重点实验室, 临汾;;兰州, 山西;;甘肃 041000;;730000, 中国.; 王国华, 山西师范大学地理科学学院;;中国科学院西北生态环境资源研究院;;中国科学院西北生态环境资源研究院, ;;中国科学院沙漠与沙漠化重点实验室;;中国科学院临泽内陆河流域研究站, 临汾;;兰州;;兰州, 山西;;甘肃;;甘肃 041000;;730000;;730000, 中国.
推荐引用方式 GB/T 7714	任亦君,席璐璐,缑倩倩,等. 单次小降雨(≤5 mm)事件对4种典型荒漠一年生草本植物生长和繁殖的影响[J],2021,41(4):1000-694X.
APA	任亦君,席璐璐,缑倩倩,宋冰,&王国华.(2021).单次小降雨(≤5 mm)事件对4种典型荒漠一年生草本植物生长和繁殖的影响.中国沙漠,41(4),1000-694X.
MLA	任亦君,et al."单次小降雨(≤5 mm)事件对4种典型荒漠一年生草本植物生长和繁殖的影响".中国沙漠 41.4(2021):1000-694X.