干旱区生态环境知识资源中心(Arid): 塔里木河上中游荒漠河岸林植物群落对淹灌的响应

Arid

	塔里木河上中游荒漠河岸林植物群落对淹灌的响应
其他题名	Response of Riparian Forest Plant Communities to Flood Irrigation in Upper and Middle Reaches of Tarim River
	李金 1; 徐海量2 ; 王勇辉 1; 赵新风 2; 高生峰 1
来源期刊	水土保持通报
ISSN	1000-288X
出版年	2019
卷号	39 期号:3 页码:31-38
中文摘要	[目的]定量分析淹灌对典型断面荒漠河岸林植物群落的长势、植物多样性的影响,为今后改进干旱区科学补水方案,实现生态水高效利用提供理论依据。[方法]通过2016-2018年6次在塔里木河上中游进行植被调查获得数据,运用Pielou指数、Shannon-Wiener指数、Simpson指数以及重要值等指标对淹灌的影响进行分析。[结果]淹灌2a后,塔里木河上中游新增了11种植物,主要是胡杨苗、柽柳苗、喜湿植物以及一年生草本,其中胡杨苗密度增加0.72株/m~2,增长率为855.9%;柽柳新枝长增加41.8 cm,增长率为71.58%,胡杨长势得到好转:优、中等胡杨出现频率增加0.11株/m~2,增长率为32%;随着距生态闸距离的增加,胡杨林密度有减小的趋势,林龄老龄化也逐渐凸显;林下物种多样性有随淹灌距离的增加而减少的趋势;距生态闸300m范围内以胡杨、柽柳幼苗及喜湿的一年或多年生草本植物成为优势种(其重要值分别为0.243,0.195,0.248),大于300m后优势种逐渐被柽柳、耐旱的多年生草本植物所取代,一年生草本植物、胡杨苗在距生态闸450m后消失。[结论]淹灌使荒漠河岸林植物群落更新能力增强,物种多样性增加。为了维持目前的生态好转趋势,淹灌工程需要继续开展。
英文摘要	[Objective]The influences of flooding on the growth and plant diversity of typical riparian forest communities in the desert was quantitatively analyzed in order to provide a theoretical basis for improving the scientific water replenishment plan and the efficient use of ecological water in arid area.[Methods]Data were obtained from vegetation surveys in the upper and middle reaches of the Tarim River from 2016 to 2018.The impacts of flooding were analyzed using the Pielou index,Shannon-Wiener index,Simpson index and important values.[Results]After flooding for 2 years,11 new plants were found in the upper and middle reaches of the Tarim River,mainly Populus euphratica,Tamarix chinensis,hygrophilous plant and annual herb.The density of P.euphraticaincreased by 0.72 plants/m~2,with a growth rate of 855.9%.The new branch length of T.chinensisincreased by 41.8 cm,and the growth rate was 71.58%.The growth of P.euphratica was significantly improved as the occurrence of good quality P.euphraticaincreased by 0.11 plants/m~2 with agrowth rate of 32%.With the increase of the distance from ecological gate,the density of P.euphratica forest showed a tendency of decrease,and the aging of the forest became more prominent.The species diversity under the forest showed a tendency of decrease with the increase of the flooding distance.Within 300m from the ecological gate,the seedlings of P.euphratica,T.chinensis and the hygrophilous one year or perennial herb became the dominant species(the important values were 0.243,0.195 and 0.248,respectively).When the distance was greater than 300m,the dominant species were gradually replaced by perennial herbs of T.chinensis and drought-tolerant herbs.The annual herb,P.euphraticaand T.chinensis disappeared at 450m away from the ecological gate.[Conclusion]Flooding irrigation enhanced the regeneration ability of plant communities and species diversity in desert riparian forests.In order to maintain the current ecological improvement trend,the flood irrigation project needs to be continued.
中文关键词	淹灌 ; 多样性指数 ; 重要值 ; 荒漠河岸林 ; 塔里木河上中游
英文关键词	irrigation diversity index important value desert riparian forest upper and middle reaches of Tarim River
语种	中文
国家	中国
收录类别	CSCD
WOS类目	FORESTRY
WOS研究方向	Forestry
CSCD记录号	CSCD:6526825
来源机构	中国科学院新疆生态与地理研究所 ; 新疆师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/239526
作者单位	1.新疆师范大学地理科学与旅游学院;;新疆自治区重点实验室干旱区环境与资源实验室, ;;新疆自治区重点实验室干旱区环境与资源实验室, 乌鲁木齐;;乌鲁木齐, 新疆;;新疆 830054;;830054, 中国; 2.中国科学院新疆生态与地理研究所, 乌鲁木齐, 新疆 830011, 中国
推荐引用方式 GB/T 7714	李金,徐海量,王勇辉,等. 塔里木河上中游荒漠河岸林植物群落对淹灌的响应[J]. 中国科学院新疆生态与地理研究所, 新疆师范大学,2019,39(3):31-38.
APA	李金,徐海量,王勇辉,赵新风,&高生峰.(2019).塔里木河上中游荒漠河岸林植物群落对淹灌的响应.水土保持通报,39(3),31-38.
MLA	李金,et al."塔里木河上中游荒漠河岸林植物群落对淹灌的响应".水土保持通报 39.3(2019):31-38.