The Effect of Soil Conservation Measures on Runoff, Soil Erosion, TN, and TP Losses Based on Experimental Runoff Plots in Northern China

doi:10.3390/w13172334

	The Effect of Soil Conservation Measures on Runoff, Soil Erosion, TN, and TP Losses Based on Experimental Runoff Plots in Northern China
	Fang, Haiyan 1,2
刊名	WATER
	2021-09-01
卷号	13 期号:17 页码:15
关键词	runoff plot natural rainfall runoff soil loss TN TP
DOI	10.3390/w13172334
通讯作者	Fang, Haiyan(fanghy@igsnrr.ac.cn)
英文摘要	Total nitrogen (TN) and total phosphorous (TP) are the main pollutants affecting the water quality of the Miyun Reservoir, Beijing. However, few studies have been conducted on their responses to implemented soil conservation measures at a slope scale in northern China. To explore the impact of soil conservation measures on TN and TP losses, field monitored data from 18 runoff plots under natural rainfalls were used to analyze the changing characteristics of runoff, soil loss, and nutrient losses during 2014-2019. The results indicated that runoff, soil erosion, as well a TN and TP losses from the plots varied significantly, depending on land use and soil conservation measures. Bare plots suffered the highest soil, TN, and TP losses, followed by cultivated plots without soil conservation measures, cultivated plots with contour tillage, and other plots. Event-averaged runoff and soil loss rates ranged from 0 to 7.9 mm and from 0 to 444.4 t km(-2) yr(-1), and event-averaged TN and TP losses from cultivated plots were the highest, with values of 39.8 and 3.0 kg km(-2), respectively. Bare and cultivated plots were the main sediment and nutrient sources. Among the cultivated plots, the terraced plot had the lowest soil and nutrient losses. The vegetated plots had insignificantly lower soil and nutrient losses. Most TN and TP were lost in particulate status from the plots, especially from the plots with soil conservation measures. Soil conservation measures can effectively prevent TN and TP losses. To guarantee water resource use, contour tillage is preferred for the bare and cultivated lands in the study region.
资助项目	National Natural Science Foundation of China[41977066] ; Beijing Natural Science Foundation[8202045]
WOS关键词	LAND-USE CHANGE ; MIYUN RESERVOIR ; VEGETATION COVER ; NUTRIENT LOSSES ; CLIMATE-CHANGE ; STREAMFLOW ; SEDIMENT ; RAINFALL ; IMPACTS ; METAANALYSIS
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
语种	英语
出版者	MDPI
WOS记录号	WOS:000694485800001
资助机构	National Natural Science Foundation of China ; Beijing Natural Science Foundation
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/165339]
专题	中国科学院地理科学与资源研究所
通讯作者	Fang, Haiyan
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Fang, Haiyan. The Effect of Soil Conservation Measures on Runoff, Soil Erosion, TN, and TP Losses Based on Experimental Runoff Plots in Northern China[J]. WATER,2021,13(17):15.
APA	Fang, Haiyan.(2021).The Effect of Soil Conservation Measures on Runoff, Soil Erosion, TN, and TP Losses Based on Experimental Runoff Plots in Northern China.WATER,13(17),15.
MLA	Fang, Haiyan."The Effect of Soil Conservation Measures on Runoff, Soil Erosion, TN, and TP Losses Based on Experimental Runoff Plots in Northern China".WATER 13.17(2021):15.