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Effect of soil conservation measures and slope on runoff, soil, TN, and TP losses from cultivated lands in northern China
Fang, Haiyan1,2
2021-07-01
Source PublicationECOLOGICAL INDICATORS
ISSN1470-160X
Volume126Pages:8
Corresponding AuthorFang, Haiyan(fanghy@igsnrr.ac.cn)
AbstractSoil and nutrient loss characteristics in cultivated lands are scarcely identified in northern China that could retard reasonable implementation of soil conservation measures. In the present study, seven-year of water, sediment, and nutrient data in 2014?2020 from five cultivated plots in the Miyun Reservoir, Beijing were used to explore runoff, soil, total nitrogen (TN) and total phosphorous (TP) loss characteristics and their responses to soil conservation measures, slope gradients, and rainfall characteristics. Annual soil loss rate (SLR) decreased from 3025.23 t km-2 yr- 1 on the plot with no soil conservation measure to 3.47 t km-2 yr- 1 on the terraced plot. Contour tillage on gentle slopes decreased soil and nutrient losses and allowed more runoff running downslope. Event-averaged SLR also presented the same trend. Runoff depth decreased insignificantly from 72.83 mm on plot with no soil conservation measure, 68.40 mm on contour tillage plots, to 3.35 mm on terraced plot. Annual TN and TP losses decreased from 344.82 and 27.21 kg km-2 yr- 1 on cultivated plot with no soil conservation measure to 11.11 kg km-2 yr- 1 and 0.47 kg km-2 yr- 1 on terraced plot, respectively. Particulate TN and TP losses contributed over 50% of the total, depending on SLR. This study implies that contour tillage is preferred on gentle slopes, and steep slope should be implemented with terrace or other measures in the study region.
KeywordRunoff plot Soil conservation measure Soil loss TN TP
DOI10.1016/j.ecolind.2021.107677
WOS KeywordNONPOINT-SOURCE POLLUTION ; WATER-QUALITY ; MIYUN RESERVOIR ; VEGETATION COVER ; NUTRIENT LOSSES ; LOESS REGION ; EROSION ; RAINFALL ; PHOSPHORUS ; STREAMFLOW
Indexed BySCI
Language英语
Funding ProjectBeijing Natural Science Foundation[8202045] ; National Natural Science Foundation of China[41977066]
Funding OrganizationBeijing Natural Science Foundation ; National Natural Science Foundation of China
WOS Research AreaBiodiversity & Conservation ; Environmental Sciences & Ecology
WOS SubjectBiodiversity Conservation ; Environmental Sciences
WOS IDWOS:000647802000007
PublisherELSEVIER
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/162597
Collection中国科学院地理科学与资源研究所
Corresponding AuthorFang, Haiyan
Affiliation1.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
Recommended Citation
GB/T 7714
Fang, Haiyan. Effect of soil conservation measures and slope on runoff, soil, TN, and TP losses from cultivated lands in northern China[J]. ECOLOGICAL INDICATORS,2021,126:8.
APA Fang, Haiyan.(2021).Effect of soil conservation measures and slope on runoff, soil, TN, and TP losses from cultivated lands in northern China.ECOLOGICAL INDICATORS,126,8.
MLA Fang, Haiyan."Effect of soil conservation measures and slope on runoff, soil, TN, and TP losses from cultivated lands in northern China".ECOLOGICAL INDICATORS 126(2021):8.
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