干旱区生态环境知识资源中心(Arid): 腾格里沙漠南缘花棒(Hedysarum scoparium)人工固沙林演替规律与机制

Arid

	腾格里沙漠南缘花棒(Hedysarum scoparium)人工固沙林演替规律与机制
其他题名	Mechanism and dynamics for succession of artificial Hedysarum scoparium sand-binding forests at the southern edge of Tengger Desert
	马全林; 张锦春; 陈芳; 张德魁; 魏林源
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2020
卷号	40 期号:4 页码:206-215
中文摘要	人工固沙林演替决定着固沙造林的成效。在腾格里沙漠南缘,应用空间代替时间的方法,选择造林封育5、 15、25年花棒(Hedysarum scoparium)人工固沙林,对照流动沙丘和地带性植被样地,从生态水文、土壤种子库、土壤-植被相互关系等方面研究了人工固沙林演替的生态学机制,为区域人工固沙植被建设、保护和修复提供理论依据。结果表明:腾格里沙漠南缘花棒人工固沙林演替过程中,花棒、沙米(Agriophyllum squarrosum)和沙蒿(Artemisia rtemisia sphaerocephala)逐渐退出,自然优势种由一年生草本植物向半灌木、半灌木与多年生草本植物演替,25年后形成相对稳定的近自然固沙植被,呈现向草原化荒漠演替的趋势,但与地带性植被相似性只达到50%。表层土壤持水力持续增强,25年后达到流动沙丘的3.4倍,引起土壤水分浅层化和深层土壤干旱,驱动了深根系植物的衰亡和浅根性草本植物的发展。土壤种子库中沙米和沙蒿快速减少,并在造林25年后消失;油蒿(Artemisia ordosica)持续增加,短花针茅(Stipa breviflora)在25年后出现;土壤种子库与地上植被组成的相似性超过50%,驱动人工固沙林向油蒿+多年生草本植被演替。伴随人工固沙林植被演替,土壤容重持续降低,黏粒、粉粒、有机质和全氮含量持续增大,与人工固沙林群落、物种组成形成密切的对应关系,决定了固沙林演替阶段和物种组成。固沙造林启动并加速了自然植被的恢复演替,是干旱区沙化土地生态恢复的必要措施,但要充分考虑地带性植被和生境条件,以快速建立稳定的近自然植被。
英文摘要	The succession of sand-binding forest impacts the construction effect of sand fixation forest. With the method of substituting time with space,the artificial sand-binding forests afforested for 5,15 and 25 years at the southern edge of Tengger Desert were selected as a success stage series,and the adjacent mobile sand dune and native vegetation habitat were took as the reference sites to reveal the ecological mechanism of the succession of artificial sand-binding forests from the aspects of ecological hydrology,soil seed bank and soil-vegetation corresponding relationship,which provided theoretical basis for the construction,protection and restoration of regional artificial sand-binding vegetation. The results showed that during the successional process of artificial sandbinding forest of Hedysarum scoparium in the southern edge of Tengger Desert,the artificial population of H. scoparium,pioneer plants Agriophyllum squarrosum and Artemisia sphaerocephala declined gradually,and the natural dominant species changed from annual herbs to semi shrubs,then to semi shrubs and perennial herbs. After 25 years,a relatively stable near natural sand-binding vegetation similar to the zonal vegetation up to 50% was formed,which showed a trend of grassland desertification succession. During the successional process of artificial sand-binding forest,the topsoil water holding capacity increased continually,reaching 3.4 times of that of the mobile sand dunes after 25 years,which resulted in the shallow distribution of soil moisture and the drought of the deep soil,driving the decline of the deep root plants and the development of the shallow root herbs. A. squarrosum and A. sphaerocephala in the soil seed bank decreased rapidly and disappeared after 25 years;A. ordosica continued to increase and Stipa breviflora appeared after 25 years,which was more than 50% similar to the aboveground vegetation composition,driving the artificial sand-binding forest to A. ordosica vegetation with perennial herbs. With the succession of artificial sand-binding forest,soil bulk density continued to decrease,clay,silt,organic matter and total nitrogen continued to increase,which was closely related to the community and species composition of artificial sand-binding forest,and determined the succession stage and species composition of sand-binding forest. Obviously,sand fixation and afforestation is a necessary measure for ecological restoration of the desertified land in arid areas,which starts and accelerates the restoration and succession of natural vegetation. However,the zonal vegetation and soil habitat conditions should be fully considered in sand fixation and afforestation,so as to establish stable near natural vegetation quickly.
中文关键词	花棒 ; 固沙林 ; 土壤水分含量 ; 土壤种子库 ; 腾格里沙漠
英文关键词	Hedysarum scoparium sand-binding forest soil water content soil seed bank Tengger Desert
类型	Article
语种	中文
收录类别	CSCD
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:6798880
来源机构	甘肃省治沙研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/336861
作者单位	马全林, 甘肃省治沙研究所;;甘肃省治沙研究所, 荒漠化与风沙灾害防治国家重点实验室培育基地;;民勤荒漠草地生态系统国家野外科学观测研究站, 兰州;;兰州, 甘肃;;甘肃 730070;;730070, 中国.; 张锦春, 甘肃省治沙研究所;;甘肃省治沙研究所, 荒漠化与风沙灾害防治国家重点实验室培育基地;;民勤荒漠草地生态系统国家野外科学观测研究站, 兰州;;兰州, 甘肃;;甘肃 730070;;730070, 中国.; 陈芳, 甘肃省治沙研究所, 荒漠化与风沙灾害防治国家重点实验室培育基地, 兰州, 甘肃 730070, 中国.; 张德魁, 甘肃省治沙研究所, 荒漠化与风沙灾害防治国家重点实验室培育基地, 兰州, 甘肃 730070, 中国.; 魏林源, 甘肃省治沙研究所, 荒漠化与风沙灾害防治国家重点实验室培育基地, 兰州, 甘肃 730070, 中国.
推荐引用方式 GB/T 7714	马全林,张锦春,陈芳,等. 腾格里沙漠南缘花棒(Hedysarum scoparium)人工固沙林演替规律与机制[J]. 甘肃省治沙研究所,2020,40(4):206-215.
APA	马全林,张锦春,陈芳,张德魁,&魏林源.(2020).腾格里沙漠南缘花棒(Hedysarum scoparium)人工固沙林演替规律与机制.中国沙漠,40(4),206-215.
MLA	马全林,et al."腾格里沙漠南缘花棒(Hedysarum scoparium)人工固沙林演替规律与机制".中国沙漠 40.4(2020):206-215.