干旱区生态环境知识资源中心(Arid): 半干旱黄土兵陵区小流域横断面土壤水分生态特征

Arid

	半干旱黄土兵陵区小流域横断面土壤水分生态特征
其他题名	Soil water ecological characteristics in a cross section of small watershed in a semi-arid loess hilly area
	刘文兆; 胡梦君; 侯喜禄; 李凤民
来源期刊	干旱地区农业研究
ISSN	1000-7601
出版年	2003
卷号	21 期号:4 页码:95-100
中文摘要	在半干旱地区甘肃榆中北部中连川流域取一横截面，根据地形部位与利用条件设11个测点，用土钻法监测土壤水分剖面分布与动态，测深到5m。各立地条件年内4月到12月土壤水分动态趋势多样。流域横断面的土壤湿度均较低，2－5m平均值一般都小于10％，其中以坡地苜蓿与半阳坡柠条林地最干燥。该地区土壤干燥化层是普遍存在的，不仅存在于人工植被，也存在于天然植被。径流富集叠加可显著改善土壤水分状况，隔坡水平梯田是其重要途径。退耕还草中要考虑各类草地的比例、苜蓿种植的适宜规模及其可持续性问题。
英文摘要	Soil moisture was measured to a depth of 5 m in eleven sites with different landform and landuse in a cross section of the Zhonglianchuan watershed during 2002. The watershed is located in a se-mi-arid and loess hilly area, Yuzhong County of Gansu Province, China. There were different types of soil moisture variation within the year of 2002 in eleven sites. Soil moistures were lower in all sites? and the averages of 2 m to 5 m depth were usually lower than 10% (dry mass water percentage), in which the smallest water contents were in soils of the sloping land under Medicago sativa and the sloping land under Caragana korshinskii. The dried soil layer exists in this area widespreadly, not only in the artificial vegeta-tion but also in the natural vegetation. The soil moisture could be increased in a site which collects the sur-face runoff from its neighboring area. One of important ways to harvest runoff is the terrace alternated with sloping land. The proportion of various grasslands, the appropriate acreage under alfalfa and its sus-tainable development should be further studied during returning cultivated land to grassland.
中文关键词	土壤水分 ; 生态特征 ; 黄土丘陵区 ; 土壤干层 ; 集雨农业 ; 甘肃
英文关键词	soil water ecological characteristic loess hilly area dried soil layer farming with rainwater harvesting technology gansuy province
类型	Article
语种	中文
国家	中国
收录类别	CSCD
WOS类目	Agriculture
WOS研究方向	Agriculture
CSCD记录号	CSCD:1179308
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/204000
作者单位	刘文兆, 中国科学院水利部水土保持研究所, 杨凌, 陕西 712100, 中国.; 胡梦君, 中国科学院水利部水土保持研究所, 杨凌, 陕西 712100, 中国.; 侯喜禄, 中国科学院水利部水土保持研究所, 杨凌, 陕西 712100, 中国.; 李凤民, 兰州大学生命科学学院, 兰州, 甘肃 730000, 中国.
推荐引用方式 GB/T 7714	刘文兆,胡梦君,侯喜禄,等. 半干旱黄土兵陵区小流域横断面土壤水分生态特征[J]. 兰州大学,2003,21(4):95-100.
APA	刘文兆,胡梦君,侯喜禄,&李凤民.(2003).半干旱黄土兵陵区小流域横断面土壤水分生态特征.干旱地区农业研究,21(4),95-100.
MLA	刘文兆,et al."半干旱黄土兵陵区小流域横断面土壤水分生态特征".干旱地区农业研究 21.4(2003):95-100.