干旱区生态环境知识资源中心(Arid): 塔里木河上、中游极端干旱区淹灌对胡杨(Populuseuphratica)长势的影响

Arid

	塔里木河上、中游极端干旱区淹灌对胡杨(Populuseuphratica)长势的影响
其他题名	Effect of flood on growth of Populus euphratica in extreme arid region in the upper and middle reaches of Tarim River for example
	高生峰; 叶茂
来源期刊	生态科学
ISSN	1008-8873
出版年	2020
卷号	39 期号:2 页码:50-57
中文摘要	为加强塔里木河流域胡杨林生态保护,维系胡杨林植被系统多样性、稳定性和完整性,针对塔里木河上游吐江、中游坎白尔吾斯坦生态监测断面,从胡杨冠幅、长势打分、年龄结构、幼苗出现频率及生理指标进行了调查和测定。分析距水源远近对胡杨林群落特征的影响。结果表明: ①淹灌前后胡杨幼苗在单位面积内(植)株(个)数从0.08株·m~(-2)增加到0.80株·m~(-2);长势较差的胡杨逐渐被长势较好的替代;同一柽柳在淹灌前后新枝增幅71.6%。②随着距生态闸距离的增大胡杨冠幅、单位面积内胡杨数呈现下降趋势;且长势打分也呈下降趋势,随着淹灌距离的增大分别下降了5.0%、19.3%、45.5%;胡杨幼林和中成林随着淹灌距离增大分布呈下降趋势、过熟林呈上升趋势,幼林分别下降了28.6%、85.7%、100%。过熟林分别增加了32%、88%、132%;胡杨幼苗出现频率随着淹灌距离增大分别下降了21.83%、44.51%、27.78%;③生态补水后,可溶性糖(SS)、脯氨酸(Pro)和脱落酸(ABA)均呈现减少趋势。在淹灌距离300 m、450 m、600 m处可溶性糖(SS)减少了37.4%-42 %;脯氨酸(Pro)减少了36.6%-41.9%;脱落酸(ABA)减少了29.8%-41.9%。生态补水在一定程度上缓解了胡杨水分胁迫,使的胡杨生长环境得以好转。
英文摘要	In order to strengthen the ecological protection of Populus euphratica forest in the Tarim River Basin and maintain the diversity,stability and integrity of the vegetation system,this paper researches and measures the crown width,growth vigor,age structure,seedling frequency as well as some physiological indices,aiming at the ecological monitoring sections of the upstream Tujiang and the midstream Kambelwustan. The effects of distance from water source on community characteristics of Populus euphratica forest are also analyzed. The results are shown as follows. (1)The number of plants per unit area of Populus euphratica seedlings is increased from 0.08 per meters to 0.80 per meters before and after irrigation. The Populus euphratica with poor growth is gradually replaced by those with better growth vigor. Namely,the new branches of the Tamarix chinensis are increased by 71.6% before and after flooding. (2)With the increase of the distance from the ecological sluice,the crown width and the number of Populus euphratica per unit area decrease,and with the expansion of the basin irrigation area,the growth scores also descend by 5.0%,19.3% and 45.5%,respectively. With the increase of irrigation distance,the distribution of Populus euphratica young forest and middle mature forest shows a downward trend,while the overmature forest shows an upward trend. The young forest decreases by 28.3%,85.7% and 100% respectively,while the overmature forest rises by 32%,88% and 132% respectively. At the same time,the seedling frequency of Populus euphratica drops by 21.83%,44.51% and 27.81%,respectively. (3)After the ecological water recharge,soluble sugar(SS),proline(Pro)and abscisic Acid(ABA)all show a downward trend. At the basin irrigation distance of 300 m,450 m and 600 m,the SS descends by 29.8 % to 42 %,the Pro drops by 36.6 % to 41.9 %,and the ABA decreases by 29.8 % to 41.9 %. To a certain extent,the ecological water recharge alleviates the water stress and realizes a better growth environment for Populus euphratica.
中文关键词	胡杨 ; 长势 ; 淹灌 ; 塔里木河
英文关键词	Populus euphratica growth vigor basin irrigation Tarim River
类型	Article
语种	中文
收录类别	CSCD
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:6695809
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/336369
作者单位	高生峰, 新疆师范大学地理科学与旅游学院, 乌鲁木齐, 新疆 830054, 中国.; 叶茂, 新疆师范大学地理科学与旅游学院, 乌鲁木齐, 新疆 830054, 中国.
推荐引用方式 GB/T 7714	高生峰,叶茂. 塔里木河上、中游极端干旱区淹灌对胡杨(Populuseuphratica)长势的影响[J],2020,39(2):50-57.
APA	高生峰,&叶茂.(2020).塔里木河上、中游极端干旱区淹灌对胡杨(Populuseuphratica)长势的影响.生态科学,39(2),50-57.
MLA	高生峰,et al."塔里木河上、中游极端干旱区淹灌对胡杨(Populuseuphratica)长势的影响".生态科学 39.2(2020):50-57.