Using the VS-Fast methodology for soil degradation assessment: a case study from Senegal

2012 ◽  
Vol 28 (4) ◽  
pp. 625-634
Author(s):  
B. G. J. S. Sonneveld ◽  
D. McGarry ◽  
D. Ndiaye
Keyword(s):  



2006 ◽  
Vol 11 (4) ◽  
pp. 477-492 ◽  
Author(s):  
JOHN M. ANTLE ◽  
JETSE J. STOORVOGEL ◽  
ROBERTO O. VALDIVIA

This paper provides a new explanation for the persistent land degradation in some parts of the world, despite the availability of seemingly effective soil conservation technologies. We demonstrate that soil conservation technologies may induce agricultural systems to exhibit equilibria characterized by both low and high levels of soil degradation. These two equilibria are separated by a threshold level of soil degradation beyond which a conservation investment will not yield a positive return. Once a parcel of land crosses this productivity threshold, soil degradation becomes economically irreversible (it is not profitable to invest in soil conservation) even though the degradation may be technically reversible. A case study of terracing investments in Peru is used to demonstrate the existence of multiple equilibria under conditions typical of many marginal agricultural areas. These findings help explain why attempts to encourage permanent adoption of soil conservation practices often fail, and how more successful policies could be designed.



2019 ◽  
Vol 38 (2) ◽  
pp. 221-229
Author(s):  
ANEESH M R ◽  
◽  
SURESH S ◽  
MANI K ◽  
◽  
...  
Keyword(s):  


2012 ◽  
Vol 16 (3) ◽  
pp. 953-966 ◽  
Author(s):  
G. Romanescu ◽  
V. Cotiuga ◽  
A. Asandulesei ◽  
C. Stoleriu

Abstract. The 3-D scanner, a rapid and precise means of monitoring the dynamics of erosive processes, was first used nationally (Romania) as a new technique of cartography and monitoring the dynamics of soil degradation processes in the Moldavian Plateau. Three sets of measurements took place: in 2008, in 2009 and in 2010, at intervals of exactly one year for the first and six months for the second part. Qualitative and quantitative differences were highlighted. The data obtained were corroborated with precipitation in the area studied. The 3-D scanner has a measurement accuracy of 6 mm. The map highlights the dynamics of gullies developed and may form the basis for the prediction of soil degradation phenomena. The dynamics of the gully and the type of land use show that the phenomenon of erosion of the Moldova Plateau will continue to accelerate. In this case, the gully attacked and destroyed an archaeological site of national importance. The rate of advance of the Cucuteni-Baiceni gully is extremely high (10 m/1.6 years). There are no measures at all to reduce or fight the process of the gully advance. Maximum erosion occurred at the beginning of spring after a winter rich in rainfall, which made the terrain subject to the process of subsidence.



2009 ◽  
Vol 20 (5) ◽  
pp. 551-561 ◽  
Author(s):  
I. Emadodin ◽  
S. Reiss ◽  
A. V. Mitusov ◽  
H. R. Bork
Keyword(s):  


2020 ◽  
Vol 12 (2) ◽  
pp. 159-164
Author(s):  
P. Sreepriya ◽  
R. Balasubramanian

Land degradation is the reduction of the biological or economic productivity of cropland, pasture, forest, and woodlands of which soil degradation is the major contributor. The present study was undertaken to understand the type and degree of major type of soil degradation, viz soil erosion and acidity in Kerala and to study the socio-economic impact of the flood on individual households in Idukki district during 2018. Random sampling was undertaken with a total sample of 180 households from different occupational background for the case study. Various studies conducted in pre-flood period revealed that in Kerala, 94.7 % of the total geographical area were acidic and 71.28 % were eroded, whereas in Idukki 96.3 % of the total geographical area is acidic and 80 % were eroded. United Nations post-disaster need assessment report has estimated a total economic loss of Rs.31,000 crores in Kerala due to flood.  Agricultural sector (Rs 3646 crores), fisheries (Rs 93.72 crores), forestry (Rs 9.55 crores), infrastructure, power, housing and tourism sector (Rs 2000 crores) also suffered economic losses post-flood in Kerala. The case study in Idukki district revealed that average damage cost of individuals due to flood with different occupational status was Rs.13.36 lakhs with relative damage cost of 364 %. As farmers are reluctant to undertake soil conservation activities due to high labour costs and capital-intensive plantation crops, public investment has to be strengthened conservation of natural resources of flood-affected areas of Kerala.



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