干旱区生态环境知识资源中心(Arid): 沙漠公路防护林凋落物量、组成及动态

Arid

	沙漠公路防护林凋落物量、组成及动态
其他题名	Biomass,Composition and Dynamics of Litterfall in Taklimakan Desert Highway Shelterbelt
	张雪梅; 王永东; 徐新文; 雷加强
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2017
卷号	37 期号:6 页码:1142-1149
中文摘要	凋落物由植物产生并最终归还给土壤,为分解者提供物质和能量的来源。以塔克拉玛干沙漠公路沿线防护林为对象,2014年对各林龄防护林内的凋落物量、凋落物组成及动态变化进行研究。结果表明:沙漠公路8、10、 13、16、19a防护林年总凋落量分别为8 301.96、9 089.71、10 540.64、6 184.70、7 929.95kg·hm~(-2)。各林龄防护林凋落物组成均以乔木状沙拐枣(Calligonum arborescens)同化枝、梭梭(Haloxylon ammodendron)同化枝和多枝柽柳(Tamarix ramosissima)枝凋落物占的比例最大,3种凋落物总量占年总凋落量的比例分别为89.05%、 79.16%、75.28%、78.75%、81.14%。各凋落物组分在不同林龄间差异显著(P<0.05)。不同林龄防护林皆表现出春、秋季凋落量高,夏、冬季凋落量低的季节动态。各林龄防护林凋落物总量及主要凋落物的凋落量月动态变化曲线均呈现三峰型,在35月、7月和911月出现峰值,叶、果和其他的凋落量呈不规则变化,花只在48月凋落。
英文摘要	Aboveground litter biomass is an important component of the nutrient and carbon cycling in artificial forests.Litters are produced by the plants and return to the soil eventually,provide matter and energy sources for the decomposition.In order to quantify annual litterfall biomass of the extreme arid Taklimakan Desert Highway shelter forests,the litter biomass,composition and dynamics were investigated throughout one year in 2014.The artificial shelterbelt included three species of plants,Calligonum arborescens,Haloxylon ammodendron,and Tamarix ramosissima.The results showed that the annual litterfall biomass was up to 8 301.96,9 089.71,10 540.64,6 184.70,7 929.95 kg·hm~(-2) at the stand ages of 8,10,13,16,and 19 years.With assimilative branches of C.arborescens and H.ammodendron,and branches of T.ramosissima being dominant components of litterfall during the entire year in different age’s shelterbelt,which contributed to 89.05%,79.16%,75.28%,78.75%,81.14%in the total litterfall biomass at the stand ages of 8,10,13,16,and 19 years,respectively.The analysis of variance showed that there was a significant difference in the amounts of the assimilative branches,branches,leaves,seeds,flowers and others among different shelterbelt ages(P<0.05).There was similar seasonal dynamic in different ages,the higher litterfall biomass in spring and autumn,and the lower litterfall biomass in summer and winter.Monthly changes in litterfall pattern showed three peaks in the total biomass and biomass for the assimilative branches of C.arborescens and H.ammodendron,and the branches of T.ramosissima,reaching the peaks in March to May,July,and September to November.While no obvious litterfall pattern was found for leaves,seeds and others,and flowers only present from April to August.
中文关键词	凋落物量 ; 凋落物组分 ; 动态变化 ; 防护林 ; 林龄
英文关键词	litterfall biomass litter component dynamic shelterbelt stand age
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:6118696
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/237153
作者单位	中国科学院新疆生态与地理研究所, 国家荒漠-绿洲生态建设工程技术研究中心, 乌鲁木齐, 新疆 830011, 中国
推荐引用方式 GB/T 7714	张雪梅,王永东,徐新文,等. 沙漠公路防护林凋落物量、组成及动态[J]. 中国科学院新疆生态与地理研究所,2017,37(6):1142-1149.
APA	张雪梅,王永东,徐新文,&雷加强.(2017).沙漠公路防护林凋落物量、组成及动态.中国沙漠,37(6),1142-1149.
MLA	张雪梅,et al."沙漠公路防护林凋落物量、组成及动态".中国沙漠 37.6(2017):1142-1149.