Impacts of improved grazing land management on sediment yields, Part 1: Hillslope processes

2010 ◽  
Vol 389 (3-4) ◽  
pp. 237-248 ◽  
Author(s):  
Rebecca Bartley ◽  
Jeff P. Corfield ◽  
Brett N. Abbott ◽  
Aaron A. Hawdon ◽  
Scott N. Wilkinson ◽  
...  
2010 ◽  
Vol 389 (3-4) ◽  
pp. 249-259 ◽  
Author(s):  
Rebecca Bartley ◽  
Scott N. Wilkinson ◽  
Aaron A. Hawdon ◽  
Brett N. Abbott ◽  
David A. Post

2014 ◽  
Vol 49 (4) ◽  
pp. 372-385
Author(s):  
Shawn Burdett ◽  
Michael Hulley ◽  
Andy Smith

A hydrologic and water quality model is sought to establish an approach to land management decisions for a Canadian Army training base. Training areas are subjected to high levels of persistent activity creating unique land cover and land-use disturbances. Deforestation, complex road networks, off-road manoeuvres, and vehicle stream crossings are among major anthropogenic activities observed to affect these landscapes. Expanding, preserving and improving the quality of these areas to host training activities for future generations is critical to maintain operational effectiveness. Inclusive to this objective is minimizing resultant environmental degradation, principally in the form of hydrologic fluctuations, excess erosion, and sedimentation of aquatic environments. Application of the Soil Water Assessment Tool (SWAT) was assessed for its ability to simulate hydrologic and water quality conditions observed in military landscapes at 5th Canadian Division Support Base (5 CDSB) Gagetown, New Brunswick. Despite some limitations, this model adequately simulated three partial years of daily watershed outflow (NSE = 0.47–0.79, R2 = 0.50–0.88) and adequately predicted suspended sediment yields during the observation periods (%d = 6–47%) for one highly disturbed sub-watershed in Gagetown. Further development of this model may help guide decisions to develop or decommission training areas, guide land management practices and prioritize select landscape mitigation efforts.


Environments ◽  
2018 ◽  
Vol 6 (1) ◽  
pp. 2 ◽  
Author(s):  
Ryunosuke Ogawa ◽  
Masahiro Hirata ◽  
Birhane Gebremedhin ◽  
Satoshi Uchida ◽  
Toru Sakai ◽  
...  

The search for a sustainable land management has become a universal issue. It is especially necessary to discuss sustainable land management and to secure a site with enough feed supply to improve the lives of the farmers in the Ethiopian Highlands. This research studied the Adi Zaboy watershed in Tigray in order to reveal the changes in land management, assess how the different forms of land management affected the vegetation through unsupervised classification and normalized difference vegetation index (NDVI) analysis with geographic information system (GIS) 10.5 using a WorldView-2 satellite image taken in September 2016 and field investigation, and consider how to allow both environmental preservation and sustainable use of feed resources. The land management types at the research site were classified as “seasonally-closed grazing land”, “prohibited grazing and protected forest land”, and “free grazing land”. On comparing the NDVI of each type of land management, it was found that the seasonally-closed grazing land makes it highly possible to secure and supply feed resources by limiting the grazing period. The expansion of the prohibited grazing and protected forest land is likely to tighten the restriction on the use of resources. Therefore, sustainable land management to secure feed resources may be possible by securing and actively using seasonally-closed grazing land, securing feed by a cut-and-carry, and using satellite images and GIS.


2019 ◽  
Vol 11 (5) ◽  
pp. 1349 ◽  
Author(s):  
Stéphanie Jaquet ◽  
Thomas Kohler ◽  
Gudrun Schwilch

Labour migration in Nepal is having profound effects on land management. We take two examples from the hills of Nepal where the increasing trend in outmigration continues unabated and explore its consequences. The purpose of this study is to understand the impacts of the subsequent labour shortage on land management and how it affects households. We used data from two surveys and assessed land use change and degradation with a qualitative mapping method. The findings show that the local context leads to very different strategies in terms of land management. In one study area, land was left to lie fallow without any use, leading to overgrowth and forest recovery due to favourable climate conditions. In the other, land was no longer used as cropland but turned into grazing land with consequences such as land degradation. This study provides strong empirical data and also contributes to the mountain research community by shedding light on the effects of outmigration on land management in the hills of Nepal. We suggest that these effects, including the labour shortage and the increasingly important role of remittances, should be addressed in an integrative but differentiated way that takes into account the regional context.


2016 ◽  
Author(s):  
Debashis Mandal ◽  
Pankaj Srivastava ◽  
Nishita Giri ◽  
Rajesh Kaushal ◽  
Artemi Cerda ◽  
...  

Abstract. The present study critically analyzes the effect of grasses in reversing the process of land degradation using a systematic review. The collected information was segregated under three different land use and land management situations. Meta-analysis was applied to test the hypothesis that use of grasses reduce runoff and soil erosion. Effect of grasses was deduced for grass strip and in combination with physical structures. Similarly, the effects of grasses were analyzed in degraded pasture lands. The overall result of the meta-analysis showed that infiltration capacity increased approximately two-fold after planting grasses across the slopes in agricultural fields. Grazing land management through cut and carry system increased conservation efficiencies by 42 % and 63 % with respect to reduction in runoff and erosion, respectively. Considering comprehensive performance Index (CPI) it has been observed that hybrid napier (Pennisetum purpureum) and sambuta (Saccharum munja) seem to posses the best desirable attributes as effective grass barrier for western Himalaya and eastern Gahts while natural grass (Dicanthium annulatum) and broom grass (Thysanolaena maxima) are found to be most promising grass species for Konkan region of western Ghat and north eastern Himalayan region, respectively. In addition to these benefits, it was also observed that soil carbon loss can be reduced by 83 % with the use of grasses. Overall, efficacy for erosion control of various grasses was more than 60 % hence their selection should be based on the production potential of these grasses under given edaphic and agro-ecological condition.


2009 ◽  
Vol 31 (1) ◽  
pp. 61 ◽  
Author(s):  
B. S. Nelson ◽  
E. Robinson

The ‘Research to Reality Project’ assisted beef producers in the Burdekin catchment of north Queensland to develop practical responses to a range of production and grazing land management challenges. The project involved three groups of beef producers encompassing 19 enterprises, 680 000 ha of land and the management of 162 000 cattle. The project was founded on a continuous improvement and innovation approach, and included an employed industry champion and multi-disciplinary project team who used a range of extension methods to identify, develop and implement on-property projects. Extension methods included one-on-one property planning activities, economic benchmarking, land condition assessments, on-property demonstrations, structured learning workshops and information products. The value of project evaluation to producers and the project staff is discussed. Further, the link between increased profitability and better land management was established for many producers. This learning is reflected in the uptake of recommended grazing practices and the decisions producer participants are now making about their grazing business.


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