A Geospatial Modelling Approach to Understand the Spatio-Temporal Impacts of Grazing on Soil Susceptibility to Erosion

被引:5
作者
Pereira, Fabiellen C. [1 ,2 ]
Donovan, Mitchell [3 ]
Smith, Carol M. S. [2 ,4 ]
Charters, Stuart [2 ,5 ]
Maxwell, Thomas M. R. [1 ,2 ]
Gregorini, Pablo [1 ,2 ]
机构
[1] Lincoln Univ, Fac Agr & Life Sci, Dept Agr Sci, Lincoln 7674, New Zealand
[2] Lincoln Univ, Ctr Excellence Designing Future Prod Landscapes, Lincoln 7674, New Zealand
[3] AgResearch Ltd Invermay Agr Ctr Puddle Alley, Mosgiel 9053, New Zealand
[4] Lincoln Univ, Fac Agr & Life Sci, Dept Soil & Phys Sci, Lincoln 7674, New Zealand
[5] Lincoln Univ, Fac Environm Soc & Design, Sch Landscape Architecture, Lincoln 7674, New Zealand
关键词
grassland; grazing management; health; soil; pastoral livestock production systems; PHYSICAL-PROPERTIES; NEW-ZEALAND; INFILTRATION RATES; SEASONAL-CHANGES; WATER EROSION; PASTURE YIELD; HILL-COUNTRY; VEGETATION; MANAGEMENT; RAINFALL;
D O I
10.3390/soilsystems7020030
中图分类号
S15 [土壤学];
学科分类号
0903 ; 090301 ;
摘要
Grazing management to reduce soil erosion is paramount for preserving and enhancing grassland health under pastoral livestock production systems. However, as the focus of these production systems is to increase productivity, the inclusion of the soil and its complexity in grazing management has been usually neglected. Detailed consideration of the soil spatio-temporal susceptibility to erosion may be best approached with simulation modelling. To understand and explore the spatio-temporal impact of grazing strategies on soil surface erosion, this work used a geospatial model approach in a high-country pastoral livestock production system in New Zealand as a case study. We modelled 45 scenarios characterized by different stock densities and occupation periods applied for each season of the year and for different livestock types: sheep, beef, and deer, producing a total of 540 scenarios. In addition, we included scenarios to represent ungrazed pastures for each season and the current grazing management of the case study station as the baseline for comparisons (resulting in a total of 545 scenarios). Spatio-temporal variation of natural soil superficial erosion from ungrazed pastures appears to be more relevant than the impact of manipulating grazing intensity and indicates that paddocks in our study area have different capacities to support grazing which also changes during seasons. Increases in occupation period seem more detrimental to soil erosion compared to increases in stock density, and cattle are the most detrimental stock type compared to sheep and deer. Our results suggest that grassland health can be enhanced in LUMGS by applying context-adjusted grazing management strategies according to the station spatio-temporal heterogeneity and susceptibility to erosion.
引用
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页数:19
相关论文
共 57 条
[1]  
[Anonymous], 1998, TCM Data
[2]  
[Anonymous], 2018, R: A Language and Environment for Statistical Computing
[3]   The impacts of grazing animals on the quality of soils, vegetation, and surface waters in intensively managed grasslands [J].
Bilotta, G. S. ;
Brazier, R. E. ;
Haygarth, P. M. .
ADVANCES IN AGRONOMY, VOL 94, 2007, 94 :237-280
[4]   The interdisciplinary nature of SOIL [J].
Brevik, E. C. ;
Cerda, A. ;
Mataix-Solera, J. ;
Pereg, L. ;
Quinton, J. N. ;
Six, J. ;
Van Oost, K. .
SOIL, 2015, 1 (01) :117-129
[5]   The effect of season and parent material on water erosion on highly eroded soils in eastern Spain [J].
Cerdà, A .
JOURNAL OF ARID ENVIRONMENTS, 2002, 52 (03) :319-337
[6]   The influence of aspect and vegetation on seasonal changes in erosion under rainfall simulation on a clay soil in Spain [J].
Cerda, A .
CANADIAN JOURNAL OF SOIL SCIENCE, 1998, 78 (02) :321-330
[7]   Seasonal variability of infiltration rates under contrasting slope conditions in southeast Spain [J].
Cerda, A .
GEODERMA, 1996, 69 (3-4) :217-232
[8]  
CHAPMAN DF, 1986, NEW ZEAL J AGR RES, V29, P39
[9]   Effects of cattle, sheep and deer grazing on soil physical quality and losses of phosphorus and suspended sediment losses in surface runoff [J].
Cournane, Fiona Curran ;
McDowell, Richard ;
Littlejohn, Roger ;
Condron, Leo .
AGRICULTURE ECOSYSTEMS & ENVIRONMENT, 2011, 140 (1-2) :264-272
[10]   Evaluation of soil compaction in an irrigated short-duration grazing system [J].
da Silva, AP ;
Imhoff, S ;
Corsi, M .
SOIL & TILLAGE RESEARCH, 2003, 70 (01) :83-90