Paper Title:
Effects of Water and Soil Conservation Practices on Reducing Pollution from Agricultural Nonpoint Source in Northeast China
  Abstract

Soil and water loss from sloped farmland is a mainly environmental and agricultural issue worldwide. Many management practices have been selected and are effective to reduce sediment and associated nutrient losses. Fallout 210Pbex tracer technique was used to quantity the soil erosion in terrace cultivation and contour farming field. The soil erosion rate from up-and-down slope field was estimated by RUSLE2 model. The sediment yields from contouring and terraces were reduced 63% and 95%, respectively, by comparison with up-and-down tillage. Terraces could reduce soil erosion 74% and intercept runoff 45% than contouring tillage. However, the concentrations of nitrogen and phosphorus with runoff from terraces were greater than those from contouring field. Transport loads of TP, DTP, and phosphate (PO43- -P) through water from terraces increased 4.54, 1.34, and 2.53 times than those from contouring tillage, respectively. It is concluded that no single mitigation option can reduce all pollutants. Terrace can achieve pollutants reduction target in tandem with other soil and water conservations.

  Info
Periodical
Advanced Materials Research (Volumes 356-360)
Chapter
Chapter 13: Soil and Water Conservation and Desertification Control
Edited by
Hexing Li, Qunjie Xu and Daquan Zhang
Pages
2473-2478
DOI
10.4028/www.scientific.net/AMR.356-360.2473
Citation
Y. H. Yang, B. X. Yan, H. Zhu, L. X. Wang, "Effects of Water and Soil Conservation Practices on Reducing Pollution from Agricultural Nonpoint Source in Northeast China", Advanced Materials Research, Vols. 356-360, pp. 2473-2478, 2012
Online since
October 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Jun Wang, H. Liu, Chuan Zhen Huang
Abstract:Predictive mathematical models for the depth of jet penetration are presented for both straight-slit cutting and contouring by an abrasive...
462
Authors: C.C. Peng, Chieh Li Chen
Abstract:The main difficulties in dealing with extremely high speed precision contouring control are system uncertainties and external disturbances,...
1183
Authors: Bo Wang, Ying Chun Liang, Shen Dong
Abstract:This paper presents a sophisticated trajectory tracking algorithm based on the utilization of the compound control and fuzzy contour control...
813
Authors: Wei Wang, Hong Jun Wang, Deng Wang Li, Yong Yin
Chapter 5: Digital Manufacturing
Abstract:Automatic segmentation of tumor in FDG PET-CT is potentially beneficial in clinical application. However, the performances of existing...
572
Authors: Jozef Beňo, Jozef Stahovec, Ildikó Maňková, Marek Vrabeľ, Ladislav Kandráč
Chapter 2: Novel Trends in Applied Mechanics and Materials
Abstract:This paper introduces chosen results from measuring cutting forces when end ball milling as well as combined approach to their evaluation....
352