干旱区生态环境知识资源中心(Arid): 流域水文变化对胡杨荒漠河岸林林窗及形成木特征的影响

Arid

	流域水文变化对胡杨荒漠河岸林林窗及形成木特征的影响
其他题名	Influence of river hydrological change on the characteristics of canopy gaps and gap makers of Populus euphratica desert riparian forest
	阿依加马力·克然木 1; 玉米提·哈力克 1; 塔依尔江·艾山 1; 买尔当·克依木 2; 祖皮艳木·买买提 1; 艾力亚尔·艾尼瓦尔 1
来源期刊	生态学报
ISSN	1000-0933
出版年	2019
卷号	39 期号:17 页码:6322-6331
中文摘要	林窗作为森林生态系统得以长期维持的主要驱动力之一,能够促进森林的自然更新与演替、优化森林结构和养分循环,从而提高生物多样性及生态系统服务功能。基于塔里木河中游历年径流量、耗水量与地下水埋深等水文数据,利用回归模型、拟合优度t检验与种群结构动态定量相结合的方法,分析了研究区水文条件对胡杨荒漠河岸林林窗数量及其形成木种群结构与动态的影响。结果表明:1) 1970年前塔里木河中游水量较为充足,在一定程度上可满足胡杨生存发育的需水量。自1980年来,塔里木河中游年径流量(R~2= 0.785, P<0.01)与耗水量(R~2=0.524,P<0.01)呈明显减少趋势、地下水日益匮乏,其埋深呈直线下滑趋势(R~2 = 0.8618,P<0.01)。这导致河道两岸的胡杨林生态用水日益紧缺,从而引起胡杨林林窗现象频繁出现,尤其是在19972006年期间。2)随着中游年径流量与耗水量逐渐减少、地下水埋深逐渐增加,林窗内胡杨形成木数量则变为增长趋势。3)林窗形成木除19571966、19671976年属衰退型外,19771986、19871996、19972006和20072016年均呈现增长型特征。特别是林窗内胡杨形成木Ⅱ级幼龄树大幅度增加,其表现出胡杨林年龄结构的老龄化特征。4)由模型显示,林窗及其形成木数量与径流量之间存在显著性负相关,径流量降至17.81*10~8 m~3时,林窗内的胡杨将面临高峰死亡。由此可知,在干旱区水文条件是决定胡杨生死的主导因子,也是塔里木河中游荒漠河岸林林窗形成的主要原因。
英文摘要	Populus euphratica is a member of the Salicaceae family,and is a key tree species of the desert riparian forest. Forest gaps can promote the natural renewal and succession of forests and optimize forest structures and nutrient cycling, thereby, which is regarded as a main driver for increasing biodiversity and ecosystem services. In this study, field data were obtained from six plots with a typical sampling method within study area. The effects of hydrological conditions on the number of canopy gaps,formation and dynamics of gap maker populations were analyzed by using a combined method of the regression model,the goodness-of-fit t test and the dynamic quantitative of population structure,based on the hydrological data such as runoff, water consumption and groundwater depth in the middle reaches of the Tarim River. The result showed that: 1) Before the 1970s, the amount of water in the middle reaches of the Tarim River was sufficient, to a certain extent, which could meet the water requirement for the survival and development of P. euphratica forests to some extent. Since the beginning of 1984, the annual runoff (R~2 = 0.785, P < 0.01) and water consumption (R~2 = 0.5238, P<0.01) in the middle reaches of the Tarim River have shown a significant decreasing trend,the groundwater is increasingly scarce and its depth is in a declining trend (R~2 = 0.8618,P<0.01),especially during the period of 19972006.2) As the annual runoff and water consumption gradually decrease, the groundwater depth also increases; the number of gap maker population becomes a growing trend. 3) In addition to the recession type in 19571966 and 19671976,the forest gap maker population showed a growing trend in 19771986,19871996, 19972006 and 20072016. Particularly, the juvenile P. euphratica tree gap makers in the forest gap increased significantly, which showed the aging characteristics of P. euphratica forests. 4) According to the model output, there is a significant negative correlation between runoff and the number of canopy gaps, and gap makers. Large number of P. euphratica in forest gaps will face with mortality, when runoff is decreased to the 17.81 * 10~8 m~3. Thus, hydrological conditions in the arid area are the dominant factors determining the life and death of P. euphratica,and also the main driver for the formation of desert riparian forest gaps in the middle reaches of the Tarim River.
中文关键词	塔里木河 ; 水文变化 ; 胡杨荒漠河岸林 ; 林窗 ; 林窗形成木 ; 径级结构
英文关键词	Tarim River hydrological change Populus euphratica desert riparian forest forest gap gap makers DBH structure
语种	中文
收录类别	CSCD
WOS类目	BIOLOGY
WOS研究方向	Life Sciences & Biomedicine - Other Topics
CSCD记录号	CSCD:6581207
来源机构	新疆大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/316218
作者单位	1.新疆大学资源与环境科学学院;;新疆维吾尔自治区绿洲生态教育部重点实验室, ;;新疆维吾尔自治区绿洲生态教育部重点实验室, 乌鲁木齐;;乌鲁木齐, ;; 830046;;830046; 2.中国科学院生态环境研究中心, 城市与区域生态国家重点实验室, 北京 100085, 中国
推荐引用方式 GB/T 7714	阿依加马力·克然木,玉米提·哈力克,塔依尔江·艾山,等. 流域水文变化对胡杨荒漠河岸林林窗及形成木特征的影响[J]. 新疆大学,2019,39(17):6322-6331.
APA	阿依加马力·克然木,玉米提·哈力克,塔依尔江·艾山,买尔当·克依木,祖皮艳木·买买提,&艾力亚尔·艾尼瓦尔.(2019).流域水文变化对胡杨荒漠河岸林林窗及形成木特征的影响.生态学报,39(17),6322-6331.
MLA	阿依加马力·克然木,et al."流域水文变化对胡杨荒漠河岸林林窗及形成木特征的影响".生态学报 39.17(2019):6322-6331.