2 edition of Erosion-induced loss in soil productivity found in the catalog.
Erosion-induced loss in soil productivity
Michael A. Stocking
by Food and Agriculture Organization, School of Development Studies, Universityof East Anglia in Rome, Norwich
Written in English
|Statement||Michael Stocking with Lewis Peake.|
|Series||Manuals and reports in development studies -- no.27|
|Contributions||Peake, Lewis., Food and Agriculture Organization., University of East Anglia. School of Development Studies., International Conference on Soil Conservation, (4th : 1985 : Maracay)|
Loss of Arable Land. Soil erosion removes the top fertile layer of the soil. This layer is rich in the essential nutrients required by the plants and the soil. The degraded soil does not support crop production and leads to low crop productivity. Clogging of Waterways. The agricultural soil contains pesticides, insecticides, fertilizers, and. For erosion-induced loss in soil productivity, there are three major variables: soil erosion – represented as a cumulative amount of soil lost; that is, as soil loss over a unit of land area accumulated over specified periods of time.
Erosion-Induced Loss in Soil Productivity: Second Workshop: Preparatory Papers and Country Reprt Analyses. Workshop held at Chapecó, Santa Catarina, Brazil March, Author(s) Stocking, M.; Benites, J.R. Publisher: Rome.: Food and Agriculture Organization of the United Nations (FAO) Publication year: Notes. Soil characteristics, erosion, and productivity How much present erosion? Effects of erosion on productivity Significance of productivity loss Technical responses to erosion-induced productivity loss Some policy issues. Series Title: Routledge revivals. Responsibility: Pierre R. Crosson with Anthony T. Stout.
Thus, soil erosion is a continuous process and may occur either at a relatively unnoticed rate or an alarming rate contributing to copious loss of the topsoil. The outcomes of soil erosion are reduced agricultural productivity, ecological collapse, soil degradation, and the possibility of desertification. Causes of Soil Erosion. uated how these erosion-induced nutrient losses may have affected agricultural production under past and present con-ditions. 2 Materials and methods Materials Erosion plot database (EPD). We compiled a large data set of erosion rates measured on erosion plots from scientiﬁc pa-pers, books and reports (Supplement 1). Only measurements.
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Erosion-induced Loss in Soil Productivity: Trends in Research and International Cooperation: Paper to the IV International Conference on Soil. Erosion-induced loss in soil productivity is one of the major threats to global food and economic security, especially to resource-poor farmers in the tropics.
It not only diminishes the quality of soil resources but also makes gaining a livelihood from the land increasingly : Michael Stocking. Collates all the research in erosion-induced loss in soil productivity that the authors have been able to find.
Some items of research are categorised according to geographical area, soil type. The soil quality concept also has strong application in establishing the cause effect relationship between soil erosion and productivity.
Understanding the complex relationship can be simplified by evaluating and quantifying erosion-induced changes in soil quality (e.g., soil.
Abstract. Collates all the research in erosion-induced loss in soil productivity that the authors have been able to find. Some items of research are categorised according to geographical area, soil type, crop, research method and parameters : Michael Stocking and Lewis Peake.
Collates all the research in erosion-induced loss in soil productivity that the authors have been able to find. Some items of research are categorised according to geographical area, soil type, crop, research method and parameters studied.
Analyses of research activity indicate that Aridisols and Oxisols are under-represented and good quantitative information is lacking on the other major. (PI does not equal for any soils in the initial period.) Approximates loss in productivity from erosion.
Vulnerability value: Approximates the rate of change over time for a given soil in the PI value. High V values indicate relatively high susceptibility to erosion-induced produc- tivity loss. The mean soil erosion rate for the area was 15 Mg ha −1 yr −1, and sugarcane showed the highest mean value of 31 Mg ha −1 yr −1 The half life time of the watershed, i.e., the time until 50% of the area reach the minimum soil depth, was estimated to + yr in relation to present time.
The estimated time for sugarcane's productivity to. Soil loss tolerance (permissible soil loss or soil sustainability) value (T value),is a basis for judging whether a soil has potential risks of erosion, productivity loss and whether a river has downstream over-sedimentation, and it also often serves as an ultimate criterion for erosion control as well as a proxy indicator of soil quality (Johnson, ) so as to preserve the soil productivity.
The SOC being the most important indicator of soil quality (Rajan et al., ), erosion-induced loss of SOC affects soil quality on-site and the environment quality off-site (see Section #7).
Chappell et al. () assessed SOC erosion across Australia from s to at 4 Tg SOC/yr, or loss of ∼2% of SOC stock in 0–10 cm depth. The On-Site Impacts of Soil Erosion. The main on-site impact of soil erosion is the reduction in soil quality which results from the loss of the nutrient-rich upper layers of the soil, and the reduced water-holding capacity of many eroded soils.
Loss of soil quality is a long-term problem; globally, soil erosion’s most serious impact may well be its threat to the long-term sustainability of agricultural productivity, which results from.
Accelerated erosion affects productivity both directly and indirectly. Directly, the erosion‐induced reduction in crop yields is attributed to loss of rooting depth, degradation of soil structure, decrease in plant‐available water reserves, reduction in organic matter, and nutrient imbalance.
In this paper we quantify the relationship between crop yields and soil water available to plants, the most important yield-determining factor affected by erosion, at the European scale.
Using information on the spatial distribution of erosion rates we calculate the potential threat of erosion-induced productivity losses. Among the soil degradative processes (decline in soil structure, compaction, salinisation, decline of soil biodiversity, acidification, etc.), soil erosion is the most well‐known form of soil degradation (Lal, ).
In this manuscript, we consider the impact of soil erosion by water in loss of agricultural productivity recognising that there. FAO. Network on erosion-induced loss in soil productivity. Report of a workshop at Bog or, Indonesia, marzo de Dirección de Fomento de Tierras y Aguas, FAO, Roma.
Foster G.R., Moldenhauer W.C. y Wischmeier W.H. Transferability of US technology for prediction and control of erosion in the tropics. After seven years of erosion induced by four levels of artificial cover, the effective rainfall on the most eroded soil was 20 percent less than on the control full cover.
Crop yields were also found to be significantly affected: in by nearly kg/ha and in by over kg/ha—a 50% decline in yield, amounting to a loss of 4 kg/ha. FAO. Erosion-induced loss in soil productivity and its impacts on agricultural production and food security, by.
Stocking and A. Tenberg. In H. Nabhan, A. Mashali and A. Mercmut, eds. Integrated soil management for sustainable agriculture and food security in Southern and eastern Africa.
Effects of erosion on the eroded site: loss of productivity. This regression seems to indicate that erosion-induced reduction in soil productivity can be countered primarily by adding organic matter, and secondly through cropping techniques that improve porosity (or water-storage capacity) and infiltration capacity.
The chapter examines the effects of erosion on agricultural productivity and the importance of erosion-induced productivity losses for agriculture, concluding that erosion-induced onsite productivity losses as well as the downstream effects of erosion may become an important environmental threat.
Introduction. Healthy soil is the foundation of agriculture and an essential resource to ensure human needs in the 21st century 1, such as food, feed, fibre, clean water and clean is a vital part of ecosystems and earth system functions that support the delivery of primary ecosystem services 2, The latest reference document of the United Nations (UN) on the status of global soil.There are few estimates of productivity loss at regional scales.
() concluded from a systematic analysis of plot data that soil erosion-induced losses were, on average, ca. 4 % of the.Soil is the earth’s fragile skin that anchors all life on Earth. It is comprised of countless species that create a dynamic and complex ecosystem and is among the most precious resources to humans.
Increased demand for agriculture commodities generates incentives to convert forests and grasslands to farm fields and pastures. The transition to agriculture from natural vegetation often cannot.