Identifying critical limits for soil quality indicators in agro-ecosystems

Arshad, Muhammad; Martin, S. Clark

doi:10.1016/s0167-8809(01)00252-3

Cited by 543 publications

(307 citation statements)

References 12 publications

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“…A estimativa de atributos edáficos relacionados à sua funcionalidade possibilitaria monitorar indiretamente a qualidade do solo (Reinert, 1998) e sua utilização como indicadores importantes para o planejamento e a avaliação de práticas de manejo que sejam ecológica e economicamente viáveis (Doran & Zeiss, 2000;Arshad & Martin, 2002;Bouma, 2002). Contudo, no Brasil, a utilização desses indicadores em áreas degradadas é recente, e as pesquisas relacionadas à recuperação dessas áreas estão ainda formando suas bases de dados, por meio de programas de monitoramento das atividades empregadas no sentido de melhorar a qualidade do ambiente (Campello et al, 2000).…”

Section: Introductionunclassified

Atributos químicos e microbianos de solos sob diferentes coberturas vegetais no norte do Estado do Rio de Janeiro

Gama-Rodrigues

Paulino³

et al. 2008

Rev. Bras. Ciênc. Solo

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RESUMOOs objetivos do presente estudo foram avaliar a influência de Acacia auriculiformis (acácia), Mimosa caesalpiniifolia (sabiá) e Corymbia citriodora (eucalipto), comparadas às coberturas de capoeira e pastagem, sobre os atributos químicos e microbianos do solo. As espécies apresentaram sobrevivência no campo acima de 70 % e bom desenvolvimento em altura e diâmetro (DAP). Entre as leguminosas, o sabiá apresentou a maior taxa de sobrevivência, enquanto a acácia mostrou melhor desenvolvimento, especialmente entre os 27 e 44 meses. As espécies florestais, na fase inicial de desenvolvimento, revelaram-se promissoras em melhorar a fertilidade do solo, apesar da redução dos teores de matéria orgânica. A pastagem mostrou potencial de manter o teor de MO e melhorar a fertilidade do solo. O C e N microbiano foram mais discriminantes que o C orgânico do solo às mudanças na cobertura vegetal. Os índices microbianos (qCO 2 -quociente metabólico, CBM/C -relação C da biomassa microbiana/C orgânico, NBM/N -relação N da biomassa microbiana/N total e relação C/N microbiana) foram mais discriminantes que os atributos químicos (C orgânico e N total) e microbianos (CBM -carbono da biomassa microbiana, NBM -N da biomassa microbiana e RArespiração acumulada) em aferir a dissimilaridade entre as coberturas vegetais.

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Section: Introductionunclassified

Atributos químicos e microbianos de solos sob diferentes coberturas vegetais no norte do Estado do Rio de Janeiro

Gama-Rodrigues

Paulino³

et al. 2008

Rev. Bras. Ciênc. Solo

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“…Moreover, an analysis on changes of soil properties due to the land use change can support decision and policy-making processes at regional and national levels. These include soil physical, chemical and/or biological properties (Nambiar et al, 2001;Arshad and Martin, 2002;Doran, 2002;Mulugeta et al, 2005). Their changes may be assessed by measuring and comparing present values against the values at the commencement of the monitoring period (Arshad and Martin, 2002), historical data when available (Hartemink, 1998), and soil properties under reference ecosystems (Feigl et al, 1995;Wang and Gong, 1998), or by using values measured at different time intervals (Mulugeta et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Effect of land use on soil nutrients in the loess hilly area of the Loess Plateau, China

Gong

Chen

et al. 2005

Land Degrad Dev

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Understanding the effects of land use change on soil properties is important for soil quality improvement and sustainable land use. In this study, six land use types including wasteland (WLD), cropland (CLD), abandoned land (ABD), artificial grassland (AGD), shrubland (SLD) and woodland (WOD) were selected to analyse the effects of land use types on soil nutrient in the Anjiapo catchment in the western part of the Loess Plateau in China. Significant differences were found in soil organic matter (SOM), total nitrogen (TN) and nitrate nitrogen (NON) (P < 0.01) between the six land use types. Our study also showed that land use types have different effects on soil nutrient storage, and vegetation restoration may improve soil nutrients and soil quality. While crop plantation can significantly decrease soil fertility, the trend can be reversed by cropland abandonment and afforestation. It is recommended that more C input, alternative cultivation practices, vegetation restoration and education and techniques training of local farmers could be used to improve soil conditions and to advance the sustainable land use and local development in the loess hilly area in the Loess Plateau of China.

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“…The sustainability state of a system is typically assessed by comparing current or predicted indicator states with selected reference states. Reference states have been defined by critical limits, margins of tolerance (Gomez et al 1996;Arshad and Martin 2002) or by a reference system (Abbona et al 2007). Yet, there is a lack of generality related to the choice and specification of the reference state (Girardin et al 1999;Arshad and Martin 2002;Büchs 2003).…”

Section: Introductionmentioning

confidence: 99%

“…Reference states have been defined by critical limits, margins of tolerance (Gomez et al 1996;Arshad and Martin 2002) or by a reference system (Abbona et al 2007). Yet, there is a lack of generality related to the choice and specification of the reference state (Girardin et al 1999;Arshad and Martin 2002;Büchs 2003). An example of a conceptual problem is the comparison of an 'unsustainable' reference state with a 'more sustainable' alternative, which would demonstrate some improvement in sustainability, but could hardly be viewed as 'sustainable'.…”

Section: Introductionmentioning

confidence: 99%

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Assessing the sustainability of wheat-based cropping systems using simulation modelling: sustainability = 42?

et al. 2013

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Concepts of agricultural sustainability and possible roles of simulation modelling for characterising sustainability were explored by conducting, and reflecting on, a sustainability assessment of rain-fed wheat-based systems in the Middle East and North Africa region. We designed a goal-oriented, model-based framework using the cropping systems model Agricultural Production Systems sIMulator (APSIM). For the assessment, valid (rather than true or false) sustainability goals and indicators were identified for the target system. System-specific vagueness was depicted in sustainability polygons-a system property derived from highly quantitative data-and denoted using descriptive quantifiers. Diagnostic evaluations of alternative tillage practices demonstrated the utility of the framework to quantify key bio-physical and chemical constraints to sustainability. Here, we argue that sustainability is a vague, emergent system property of often wicked complexity that arises out of more fundamental elements and processes. A 'wicked concept of sustainability' acknowledges the breadth of the human experience of sustainability, which cannot be internalised in a model. To achieve socially desirable sustainability goals, our model-based approach can inform reflective evaluation processes that connect with the needs and values of agricultural decision-makers. Hence, it can help to frame meaningful discussions, from which actions might emerge.

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Identifying critical limits for soil quality indicators in agro-ecosystems

Cited by 543 publications

References 12 publications

Atributos químicos e microbianos de solos sob diferentes coberturas vegetais no norte do Estado do Rio de Janeiro

Atributos químicos e microbianos de solos sob diferentes coberturas vegetais no norte do Estado do Rio de Janeiro

Effect of land use on soil nutrients in the loess hilly area of the Loess Plateau, China

Assessing the sustainability of wheat-based cropping systems using simulation modelling: sustainability = 42?

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