干旱区生态环境知识资源中心(Arid): 黑河中游西墩滩荒漠植物生长对水分变化响应研究

Arid

	黑河中游西墩滩荒漠植物生长对水分变化响应研究
其他题名	The natural desert plant growth responded to changes of waters in Xidun beach in middle reaches of Heihe river
	张永喆 1; 牛赟 2; 张虎 2; 闫克林 2; 吕东 2; 赵明 2
来源期刊	干旱区资源与环境
ISSN	1003-7578
出版年	2016
卷号	30 期号:7 页码:71-77
中文摘要	土地荒漠化是当前十大环境问题之一,对人类的生存和发展构成了严重威胁。为了分析荒漠化防治中植物生长与水分变化的关系,在黑河流域中游荒漠区建立试验站长期定位监测,已取得了土壤水、地下水、降水等水分数据和生物量、盖度等植物生长数据,并采用特征参数算法、相关和多元回归方法,分析了植物生长和水分的年内、年际变化特征及相关回归模型。结果表明: 1) 2006 - 2014年际变化上,土壤水和降水变化较剧烈,地下水位变化较缓和。植物盖度变化呈波动性略有增大趋势,而生物量、降水、土壤水、地下水位变化呈波动性略有降低趋势,但变化都不明显。2)在植物生长季的3 - 11月份期间,土壤各层含水率变化步调基本一致,植物平均生物量和盖度变化步调基本一致,降水量、地下水埋深变化步调基本一致,年内变化幅度从大到小依次为降水>地下水位>土壤水>生物量> 盖度。3)植物平均生物量与平均盖度、地下水埋深、降水量的回归模型为B = 1.895C - 0.033D + 0.834P + 44.369(R~2 = 0.796,P < 005),通过模型可预测生物量变差的79.6%,准确率可达67.4%。本研究可为荒漠化防治中的水资源管理以及退耕还林、天然林保护、黑河流域综合治理等工程对水资源影响的评估等提供科技支撑和参考数据。
英文摘要	Land desertification is one of the world’s top ten environmental problems,and constitutes the serious threat for human survival and development. In order to explore the response of natural desert plant growth to changes of waters in desertification control,long - term monitoring data about soil moisture content of each layer,vegetation biomass,coverage,groundwater depth and rainfall were collected from the Test Station of Desertification Control in Hongshawo in desert zones in Heihe middle reaches,and the algorithm of characteristic parameters,correlation and multiple regression analysis method were used to study the response characteristics of natural desert plant growth to the changes of water interannual and annual variances. Results show that: (1) The changes of the soil moisture content,biomass and coverage were the largest,precipitation was the second and groundwater depth was the minimal. (2) In the growing season from March to November,the annual variance of each layer soil moisture content was resemblance,and the changes of average vegetation coverage and biomass were resemblance. (3) The regression model of biomass was B = 1.895C - 0.033D + 0.834P + 44.369(R~2 = 0.796,P < 0.05). Through the regression model analysis,the variation of predicted biomass was 79.6%,and average accuracy could reach above 67.4%. This study could provide technology support and reference for water resource management and evaluation of influence of projecs of Returning Farmland to Forest,Natural Forest Protection,and Comprehensive Treatment of Heihe Basin to the water resources in desertification control.
中文关键词	生物量 ; 盖度 ; 土壤质量含水率 ; 荒漠化防治 ; 黑河中游
英文关键词	biomass coverage moisture content of soil desertification control Heihe river middle reaches
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:5775135
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/234381
作者单位	1.华南理工大学, 广州, 广东 510641, 中国; 2.甘肃张掖生态科学研究院甘肃省祁连山生态科技创新服务平台, 张掖, 甘肃 734000, 中国
推荐引用方式 GB/T 7714	张永喆,牛赟,张虎,等. 黑河中游西墩滩荒漠植物生长对水分变化响应研究[J],2016,30(7):71-77.
APA	张永喆,牛赟,张虎,闫克林,吕东,&赵明.(2016).黑河中游西墩滩荒漠植物生长对水分变化响应研究.干旱区资源与环境,30(7),71-77.
MLA	张永喆,et al."黑河中游西墩滩荒漠植物生长对水分变化响应研究".干旱区资源与环境 30.7(2016):71-77.