干旱区生态环境知识资源中心(Arid): 塔克拉玛干沙漠南缘不同植被区土壤水分状况研究

Arid

	塔克拉玛干沙漠南缘不同植被区土壤水分状况研究
其他题名	Soil Water Conditions Under Various Vegetations in Southern Fringe of Takelamakan Desert
	安桂香; 曾凡江; 孙旭伟; 刘波; 刘镇; 张晓蕾
来源期刊	水土保持通报
ISSN	1000-288X
出版年	2011
卷号	31 期号:1 页码:63-67,164
中文摘要	采用野外定位观测法,对柽柳,胡杨,骆驼刺和沙拐枣林地土壤水分状况进行监测,并通过实测数据对农田区和荒漠区0--100cm土层土壤水分特征曲线进行拟合.结果表明,各林地0--250cm土层土壤含水量均随深度增加逐渐增大,生长季内9月和10月份土壤表层含水量明显大于其它月份.一次强降雨对土壤表层含水量有所补给,对深层土壤影响较小.总体而言,土壤蓄水量(0--250cm)在月季间差异不大,均维持在120--140mm之间,但各林地有所差异,表现为:胡杨>柽柳>骆驼刺/沙拐枣.对整个生长季而言,4种植物蒸散强度呈现出:胡杨>沙拐枣>柽柳>骆驼刺,且6月份蒸散强度最大.农田区和荒漠区0--100cm土壤含水量与土壤基质势间幂函数拟合效果好.研究成果可为该区今后植被保育及生态用水提供理论参考
英文摘要	Over a long period of field experiment, soil water conditions were monitored in different woodlands with plants of Tamarix ramosissima, Populus euphratica, Alhagi sparsifolia and Calligonum caput-medusae. Soil water retention curves from 0 cm to 100 cm were fitted for farmland and desert soils based on field data. The results show that, soil water contents gradually increased with depth in 0--250 cm. During the growing season of September and October, soil water contents in 0--60 cm layer were significantly higher than in the other months. Single heavy rainfall supplied a considerable amount of water to the soil layer of 0-60 cm, while deeper soils were affected very little. The monthly change of soil water storage capacity was insignificant, fluctuating between 120 mm and 140 mm. However, the storage capacity differed in the four species as in order of P.euphratica>T.ramosissima>C.caput-medusae = A.sparsifolia. The evapotranspiriation of P.euphratica,C.caput-medusae,T.ramosissima and A.sparsifolia during the growing season ranged from high to low, respectively,as the highest values were observed in June. Exponential relationship between soil water contents and soil water potentials was found in the layer of 0--100 cm for each soil, and all the correlation coefficients were over 0.90.The results provide necessary theoretical references for ecological water needs of vegetation recovery in this area
中文关键词	土壤水分 ; 植被建设 ; 土壤水分特征曲线 ; 塔克拉玛干沙漠 ; 南缘
英文关键词	soil moisture vegetation construction soil water retention curve Takelamakan Desert Southern Fringe
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:4157811
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/2XILL650/227049
作者单位	中国科学院新疆生态与地理研究所, 乌鲁木齐, 新疆 830011, 中国
推荐引用方式 GB/T 7714	安桂香,曾凡江,孙旭伟,等. 塔克拉玛干沙漠南缘不同植被区土壤水分状况研究[J]. 中国科学院新疆生态与地理研究所,2011,31(1):63-67,164.
APA	安桂香,曾凡江,孙旭伟,刘波,刘镇,&张晓蕾.(2011).塔克拉玛干沙漠南缘不同植被区土壤水分状况研究.水土保持通报,31(1),63-67,164.
MLA	安桂香,et al."塔克拉玛干沙漠南缘不同植被区土壤水分状况研究".水土保持通报 31.1(2011):63-67,164.