干旱区生态环境知识资源中心(Arid): Role of underground leakage in soil, water and nutrient loss from a rock-mantled slope in the karst rocky desertification area

Arid

DOI	10.1016/j.jhydrol.2019.124086
	Role of underground leakage in soil, water and nutrient loss from a rock-mantled slope in the karst rocky desertification area
	Peng, Xudong 1; Dai, Quanhou 1,2; Ding, Guijie 1; Li, Changlan 1,3
通讯作者	Dai, Quanhou
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2019
卷号	578
英文摘要	Leakage loss of soil and water is the main reason for karst rocky desertification, and the concomitant nutrient loss/leakage carried by soil and sediment is an important factor that affects groundwater quality. Due to the difficulty in measuring the underground leakage of soil water, the amount of nutrient loss/leakage on a karst slope is currently unknown. A karst slope farmland is simulated in a laboratory based on field investigations in slope farmlands in a karst plateau region in Guizhou Province, China. Rainfall experiments were conducted to determine the surface losses and underground leakages of soil, water, nitrogen, phosphorus, and potassium, as well as the effects of rainfall intensity and slope on these factors in karst slope farmlands. Surface runoff occurs only at rainfall intensities greater than 30 mm/h, but underground runoff occurs under all rainfall intensity conditions. Moreover, underground leakage loss is the main mode of water loss. Soil loss on a karst slope farmland is a process that transitions from underground leakage to surface erosion as the rainfall intensity increases. The concentrations of total nitrogen (TN), total phosphorus (TP), and total potassium (TIC) in surface runoff increase with increasing rainfall intensity and decrease with increasing slope gradient. The total loss loads of TN and TK in runoff and sediment increase with increasing rainfall intensity or slope gradient. The total nutrient loss loads of TN and TP are dominated by runoff losses, but the TK loss load is dominated by sediment losses.
英文关键词	Soil erosion Underground leakage Soil nutrients Karst rocky desertification area
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000497250200060
WOS关键词	SOLUTE TRANSPORT ; DRIVING FORCES ; SEDIMENT YIELD ; EROSION ; RUNOFF ; IMPACT ; PHOSPHORUS ; SIMULATION ; INTENSITY ; GRADIENT
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Engineering ; Geology ; Water Resources
EI主题词	2019-11-01
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310643
作者单位	1.Guizhou Univ, Coll Forestry, Guiyang 550025, Guizhou, Peoples R China; 2.Guizhou Univ, CICMEAB, Minist Educ, Key Lab Plant Resource Conservat & Germplasm Inno, Guiyang 550025, Guizhou, Peoples R China; 3.Qiantao Township Peoples Govt, Guiyang 550027, Guizhou, Peoples R China
推荐引用方式 GB/T 7714	Peng, Xudong,Dai, Quanhou,Ding, Guijie,et al. Role of underground leakage in soil, water and nutrient loss from a rock-mantled slope in the karst rocky desertification area[J],2019,578.
APA	Peng, Xudong,Dai, Quanhou,Ding, Guijie,&Li, Changlan.(2019).Role of underground leakage in soil, water and nutrient loss from a rock-mantled slope in the karst rocky desertification area.JOURNAL OF HYDROLOGY,578.
MLA	Peng, Xudong,et al."Role of underground leakage in soil, water and nutrient loss from a rock-mantled slope in the karst rocky desertification area".JOURNAL OF HYDROLOGY 578(2019).