干旱区生态环境知识资源中心(Arid): 内陆河下游民勤绿洲主要防风固沙植被生态需水量研究

Arid

	内陆河下游民勤绿洲主要防风固沙植被生态需水量研究
其他题名	Ecological Water Requirement of Major Sand Shifting Control Forests in Minqin Oasis of Lower Reaches of Inland River
	徐先英 1; 丁国栋 1; 孙保平 1; 赵明 2; 金红喜 2
ISSN	1009-2242
出版年	2007
卷号	21 期号:3 页码:144-148
中文摘要	通过大型蒸渗仪和植物径流测定系统对民勤绿洲5种主要防风固沙植物单株生态需水进行了测定,并结合GIS和野外调查,确定不同植被类型的面积、生态需水定额和生态需水量;通过天然降水与生态需水的耦合,分析了不同植被类型生态需水的时空变化规律.研究表明,5种植物年平均单株最大生态需水定额分别为:沙枣1 597.4 mm、新疆杨806.77 mm、梭梭534.05 mm、柽柳426.76 mm、白刺318.83 mm;5种植被年最大生态需水总量为2.2910~8 m~3;实际生态需水量分别为:新疆杨0.2910~8 m~3、沙枣0.6910~8 m~3、梭梭0.4410~8 m~3、柽柳0.0510~8 m~3、白刺0.0210~8 m~3,总实际生态需水量1.4910~8 m~3,减去0.3510~8 m~3有效天然降水用于植被生态需水,另需1.14*10~8 m~3的生态需水,占民勤绿洲总用水量的14.92%;降水高峰期与植被生态需水的高峰期一致,主要集中于6,7,8,9四个月,分别占全年的74.1%和77.25%;有效降水对杨树、沙枣、梭梭、柽柳和白刺生态需水的贡献率分别为8.59%,10.29%,43.25%,58.4%和196%.
英文摘要	The study are conducted in Minqin oasis, in where the ecological water requirements of individual plant from 5 major species of sand shifting control forests were determined by using lystimeter and thermal dissipation probe (TDP). After the vegetative areas were determined by the field investigations associated with GIS, the quota and amount of ecological water requirement from 5 different vegetations were calculated by applying the tested data. The temporal and spatial variation of ecological water requirement were analyzed by applying precipitation events in combination with the monthly distributions of ecological water required by forestlands in growing season of vegetations. It was showed that the biggest quota of ecological water requirements of individual plant from 5 species which were Populus alba var. pyramidalis, Elaeagnus angustifolia, Haloxylon ammodendron, Tamarix rammasissima and Nitraria tangutorum were 1 597. 4 mm, 806. 77 mm, 534. 05 mm, 426. 76 mm and 318.83 mm,respectively; that the biggest total amount of ecological water required by 5 forestlands are 2. 29 10~8 m~3; that the actual amount of ecological water requirement from 5 forestlands were 0. 29 X10~8 m~3, 0. 69 X10~8 m~3, 0. 4410~8 m~3, 0. 0510~8 m~3 and 0. 0210~8 m~3, respectively and the actual total annual amount for 5 forestlands was 1.4910~8 m~3. The results also showed that 0. 3510~8 m~3 of total effective precipitation in each year could be utilized by 5 forestlands, so 1.14*10~8 m~3 of extra water resources taking 14. 92% of total water utilization in Minqin oasis would be provide to ensure the ecological water requirement of those vegetative normal growing. The main precipitation periods which distributed in June, July, August and September accounting for 74.1% of annual rainfall accorded with the high consumptive periods of forestlands in these months taking 77. 25% of annual vegetative water demands. The contributing rates of effective precipitation to Populus alba var. pyramidalis, Elaeagnus angustifolia, Haloxylon ammodendron, Tamarix rammosissima and Nitraria tangutorum were 8.59%,10. 29%,43. 25%,58.4% and 196%, respectively.
中文关键词	内陆河下游 ; 绿洲 ; 植被 ; 生态需
英文关键词	lower reaches of inland river oasis vegetation ecological water requirement
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:2826336
来源机构	北京林业大学 ; 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/2XILL650/221455
作者单位	1.北京林业大学,水土保持学院, 北京 100083, 中国; 2.甘肃省治沙研究所,甘肃民勤荒漠草地生态系统国家野外科学观测研究站, 民勤, 甘肃 733000, 中国
推荐引用方式 GB/T 7714	徐先英,丁国栋,孙保平,等. 内陆河下游民勤绿洲主要防风固沙植被生态需水量研究[J]. 北京林业大学, 甘肃省治沙研究所,2007,21(3):144-148.
APA	徐先英,丁国栋,孙保平,赵明,&金红喜.(2007).内陆河下游民勤绿洲主要防风固沙植被生态需水量研究.,21(3),144-148.
MLA	徐先英,et al."内陆河下游民勤绿洲主要防风固沙植被生态需水量研究".21.3(2007):144-148.