Expansion of the sugarcane industry and its effects on land use in São Paulo: Analysis from 2000 through 2015

Caldarelli, Carlos Eduardo; Gilio, Leandro

doi:10.1016/j.landusepol.2018.05.008

Cited by 44 publications

(18 citation statements)

References 12 publications

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“…Therefore, based on previous studies and theoretical analysis, we studied the effect between the high-tech industry and green development. First, with the expansion of industry, the influence of industry will increase [35]. We considered that the expansion of the high-tech industry could strengthen the positive influence on green development.…”

Section: Introductionmentioning

confidence: 99%

Threshold Effect of High-Tech Industrial Scale on Green Development—Evidence from Yangtze River Economic Belt

2019

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Based on the panel data of 11 regions in the Yangtze River Economic Belt from 1998 to 2016, we tested and analyzed the effects of high-tech industrial expansion on green development. For these regions in the Yangtze River Economic Belt, we wanted to investigate the potential linear relationship between the scale of high-tech industry and green development or the possible threshold effect. We wanted to determine if this relationship is different in various regions of the Yangtze River Economic Belt. According to the empirical test, we found that: (1) for the entire Yangtze River Economic Belt region, the influence of high-tech industrial scale on green development doubled the threshold effect, and a marginal efficiency diminishing effect existed with the further increase in scale; (2) due to the differences among the regions, the threshold effect was different in different regions, with a double threshold effect in the lower reaches, a single threshold effect in the middle reaches, and no threshold effect in the upper reaches; and (3) regarding the high-tech industrial scale, the downstream areas were too large to weaken its promoting effect on green development. In the middle reaches, the positive impact on green development was still increasing, and the high-tech industrial scale should be further expanded. However, in the upstream areas, high-tech industrial scales did not reach the threshold value and the relationship between the high-tech industrial scale and green development was linear. Therefore, local high-tech industries should be cultivated and developed.

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Section: Introductionmentioning

confidence: 99%

Threshold Effect of High-Tech Industrial Scale on Green Development—Evidence from Yangtze River Economic Belt

2019

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“…As a result, in recent years there has been a great expansion of sugarcane cultivation in Brazil (Goldfray et al, 2010;Caldarelli;Gilio, 2018). With this expansion, sugarcane has advanced to regions of the west of São Paulo State and areas of the Brazilian Cerrado, which are characterized by acid soils, high levels of toxic elements such as aluminum (Al 3+ ) and manganese (Mn 2+ ), and generalized nutrient deficiency (Sousa;Miranda;Oliveira, 2007).…”

Section: Introductionmentioning

confidence: 99%

The different response of sugarcane genotypes in multiple stress

2018

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Research focused on identify abiotic stress-tolerant genotypes is highly desirable since their use may reduce costs of soil and crop management and productivity losses. The aim of this study was to determine the behavior of 24 sugarcane genotypes under high levels of Al 3+ and Mn 2+ associated with low availability of mineral nutrients. The experiment was carried out under greenhouse condition in a 24 × 2 factorial scheme (24 genotypes × 2 treatments: with and without stress), and four replications in completely randomized design. In the treatment without stress plants were grown in a complete nutrient solution whereas in the treatment with stress a nutrient solution with a high acidity (4.0 ± 0.1) and 5% of its original concentration, as well as a high concentration of aluminum (60 mg L -1 ) and manganese (700 mg L -1 ) was used. The genotypes RB966928, RB855443, IACSP96-3060, SP81-3250, RB867515, CTC 21, RB965902, and IAC91-1099 had their biometric characteristics less affected by the stress, possibly due to the ability to continue the process of cell division and elongation and to maintain meristematic viable regions, hence they were considered as the most tolerant. On the other hand, the genotypes RB965917, CTC 15, CTC17, RB855536, CTC 2, CTC 20, and CTC99-1906 were the most sensitive to stress. Root system was the most affected by stress, with most genotypes showing more than 70% reduction in root biomass. No relationship was observed between tolerance level of genotypes and the maturation cycles. RESUMOPesquisas científicas focadas em identificar genótipos tolerantes a estresse abiótico são altamente desejáveis, pois, o uso desses genótipos permite reduzir custos de manejo do solo, da cultura e perdas de produtividade. O objetivo desse trabalho foi determinar o comportamento de 24 genótipos de cana-de-açúcar sob elevados teores de Al 3+ e Mn 2+ , associado a baixa disponibilidade de nutrientes. O ensaio foi instalado e conduzido em casa de vegetação em delineamento inteiramente casualizado, num esquema fatorial 24x2, correspondendo a 24 genótipos, dois tratamentos (com e sem estresse), com quatro repetições. No tratamento sem estresse, as plantas foram cultivadas em solução nutritiva completa e no com estresse foi utilizada solução nutritiva com elevada acidez (4,0 ± 0,1) e com 5% da sua concentração original, além da elevada concentração de alumínio (60 mg L -1 ) e manganês (700 mg L -1 ). Os genótipos RB966928, RB855443, IACSP96-3060, SP81-3250, RB867515, CTC 21, RB965902 e IAC91-1099 foram os que tiveram suas características biométricas menos afetadas pelo estresse, possivelmente devido a capacidade de continuarem o processo de divisão e elongação celular e manterem regiões meristemáticas viáveis, dessa forma, foram considerados os mais tolerantes. Por outro lado, os genótipos RB965917, CTC 15, CTC17, RB855536, CTC 2, CTC 20 e CTC99-1906 foram os mais sensíveis ao estresse. O sistema radicular foi o mais afetado pelo estresse sendo que a maioria dos genótipos apresentaram mais de 70% de redução da biomas...

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“…Although sugarcane can be produced under different soil types (Sanches et al, 2019;Schossler et al, 2019), it requires corrected and balanced soils to reach high productivities (Vieira-Junior et al, 2008), showing a decrease in yield as soil characteristics move away from ideal conditions (Maia et al, 2018;Souri;. Sugarcane cultivation areas have been increasing in Brazil in recent years due to its importance (Caldarelli;Gilio, 2018). Regions to which sugarcane has migrated are characterized by acid soils, generalized nutrient deficiency, and high contents of toxic elements, such as Al (Schultz et al, 2017;Sousa;Cazetta;Nascimento, 2018).…”

Section: Introductionmentioning

confidence: 99%

Aluminum toxicity reduces the nutritional efficiency of macronutrients and micronutrients in sugarcane seedlings

et al. 2020

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Although the effects of aluminum on the content and accumulation of mineral nutrients in crops have been studied, but nothing is known about its effect on the nutritional efficiency of sugarcane. Therefore, this study aimed to evaluate the effect of aluminum toxicity on nutritional efficiency, nutrient accumulation, and growth of sugarcane seedling. Sugarcane seedlings of the genotype IACSP95-5000, obtained from one-bud mini-cuttings (3 cm), were used in the test. Seedlings were subjected to treatments in a completely randomized design, with eight Al concentrations in the nutrient solution (0, 10, 20, 30, 40, 50, 60, and 70 mg L−1) and three replicates, totaling 24 experimental units. Analyses determined the contents, accumulation, and absorption, transport, and use efficiency of macronutrients, micronutrients, and aluminum, in addition to dry matter production. The results show that Al affected all variables analyzed, with a decrease in the nutritional efficiency of macronutrients and micronutrients and a drastic decrease in the accumulation of macronutrients in the aerial part, which reflected in the decrease in the dry matter of the plants. The root system was the most affected, with a decrease in growth of up to 60%. Aluminum reduced the use efficiency of nutrient in decreasing order: Ca (69%)> N (60%)> K (59%)> Mg (50%)> S (49%)> P (40%). As for micronutrients, the following decreasing order was observed: Fe (73%)> Zn (59%) = Cu (59%)> Mn (25%).

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Expansion of the sugarcane industry and its effects on land use in São Paulo: Analysis from 2000 through 2015

Cited by 44 publications

References 12 publications

Threshold Effect of High-Tech Industrial Scale on Green Development—Evidence from Yangtze River Economic Belt

Threshold Effect of High-Tech Industrial Scale on Green Development—Evidence from Yangtze River Economic Belt

The different response of sugarcane genotypes in multiple stress

Aluminum toxicity reduces the nutritional efficiency of macronutrients and micronutrients in sugarcane seedlings

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