气候变化领域集成服务门户(CCPortal): Study on the impact of vegetation degeneration to hydrology characteristic of the Alpine soil

CCPortal

DOI	10.3724/SP.J.1226.2011.00233
	Study on the impact of vegetation degeneration to hydrology characteristic of the Alpine soil
	Wang, YiBo; Wu, QingBai; Niu, FuJun; Wang, GenXu; Cheng, HuiYan
发表日期	2011
ISSN	1674-3822
起始页码	233
结束页码	242
卷号	3 期号:3
英文摘要	Alpine soil infiltration process is an important part of the hydrological characteristics of alpine soil in permafrost. This research is carried out in the source region of the Yellow River where the permafrost is severely degraded, using various methods for choosing typical sample areas, and to experiment, study and simulate the soil water curve, soil saturated hydraulic conductivity, soil infiltration and soil moisture under different characteristics of degraded vegetation. The results indicate that the empirical equation.= AS-B, proposed by Gradner and Visser, is very reliable in simulating the soil moisture curve; soil saturated hydraulic conductivity and soil infiltration are significantly different under different vegetation coverage: in the soil surface within 0-10 cm, the saturated hydraulic conductivity and infiltration intensity of Black Beach are the strongest; respectively, in soil layers below 30 cm, vegetation has almost no impacts on the saturated hydraulic conductivity, infiltration intensity and soil moisture content. Significant reduction of soil moisture occurs in soil surfaces with degraded vegetation. The more serious the degradation, the more water loss, and it can be up to 38.6% in the worst situation. Soil moisture of developed vegetation root systems in depths within 10-20 cm has the greatest impact on the soil environment, and the loss of moisture induces difficulty in the restoration of degraded meadows. Through a comparative study, the Kostiakov infiltration equation f(t) = at(-b) is more applicable for studies on the process of soil moisture infiltration of the alpine meadow in the source region of the Yellow River.
英文关键词	vegetation degradation; alpine soil; soil infiltration
语种	英语
WOS研究方向	Physical Geography
WOS类目	Geography, Physical
WOS记录号	WOS:000422285100006
来源期刊	SCIENCES IN COLD AND ARID REGIONS
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/240305
作者单位	[Wang, YiBo; Wu, QingBai; Niu, FuJun] Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lab Frozen Soils, Lanzhou 730000, Gansu, Peoples R China; [Wang, YiBo] Lanzhou Univ, Coll Earth & Environm Sci, 222 South Tianshui Rd, Lanzhou 730000, Gansu, Peoples R China; [Wang, GenXu] Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China; [Cheng, HuiYan] Lanzhou Univ Technol, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Wang, YiBo,Wu, QingBai,Niu, FuJun,et al. Study on the impact of vegetation degeneration to hydrology characteristic of the Alpine soil[J]. 中国科学院西北生态环境资源研究院,2011,3(3).
APA	Wang, YiBo,Wu, QingBai,Niu, FuJun,Wang, GenXu,&Cheng, HuiYan.(2011).Study on the impact of vegetation degeneration to hydrology characteristic of the Alpine soil.SCIENCES IN COLD AND ARID REGIONS,3(3).
MLA	Wang, YiBo,et al."Study on the impact of vegetation degeneration to hydrology characteristic of the Alpine soil".SCIENCES IN COLD AND ARID REGIONS 3.3(2011).