Carbon stock in the development of different designs of biodiverse agroforestry systems

Abstract

The objective of this study was to estimate the carbon stock in the different designs of biodiverse agroforestry systems (AFSs) in the region of the Environmental Protection Area (EPA) of Pratigi, Bahia, Brazil. Phytosociology aspects related to the potentiality of carbon stock of 10 farms were evaluated using plots of 10 x 50 m allocated in each AFS, inventorying 928 individuals of 17 families and 37 species, established in 2013. The biomass above and below the soil of the arboreal individuals were estimated by indirect method, using specific allometric equations for each species or group of species, with diameter above 1 cm. Carbon stock (CS) was estimated from the biomass. Cacao (Theobroma cacao) and rubber tree (Hevea brasiliensis) were the dominant species in all of the designs, which also contained fruit trees, and native and exotic shade trees. There was variation of the estimate of carbon stock (8.01-1.42 Mg ha-1) between the types of AFSs. The designs with a larger relative density of fruit and shade trees led to larger carbon storage, influenced by the wealth and diversity of species in the initial phase of establishment of biodiverse AFSs.

Soil organic carbon in no-tillage systems of different ages in Southwest Mato Grosso, Brazil

“…Thus, a decline in SOC potentiates soil degradation affecting food, water, and climate security. This reinforces the need to monitor SOC stocks, mainly on a regional and local scale (Fernandes et al, 2018;Silva et al, 2018), obtained by field surveys (FAO, 2017;Lal et al, 2018).…”

“…Agriculture has been identified as one of the activities most responsible for the emission of carbon into the atmosphere, in the form of CO 2 . However, several studies (Cerri et al, 2004;FAO, 2017;Lal, 2018;Silva et al, 2018;Fernandes et al, 2018) show that agriculture can also act as a sink, sequestering CO 2 from the atmosphere and storing it in soil organic matter.…”

Biodiversity of the Cocoa Agroforests of the Bengamisa-Yangambi Forest Landscape in the Democratic Republic of the Congo (DRC)

“…At the same time, the private sector (importers and distributors in Europe) wants its value chain to be free of links to deforestation. Plants associated with cocoa are the main carbon sinks [46,78,79] and key components for others ecosystems services. This creates expectations for cocoa agroforest and farming systems that should be explored through greater study.…”

Utilização de recursos vegetais em áreas de quintais em uma comunidade rural localizada no entorno do Parque Nacional de Sete Cidades, Piauí, Nordeste do Brasil

“…Referente ao processo de adubação desenvolvido na localidade, a ausência na utilização de insumos de alta periculosidade, substituído através da adubação orgânica, garante a essas pessoas uma prática sustentável que contribui com a preservação da natureza e maior segurança alimentar e nutricional considerando que os alimentos resultantes não são contaminados com substâncias químicas. Além disso, os sistemas agroflorestais podem contribuir com melhoramento da fertilidade do solo (Pinho et al, 2012) e captação de carbono (Araújo et al, 2013;Fernandes et al, 2018).…”

“…No Estado do Piauí a vegetação recebe influência de três domínios florísticos: amazônico, caatingas e cerrados (Ducke e Black, 1953;Emperaire, 1985). A criação do PARNA foi efetivada levando em consideração seu reconhecimento enquanto nicho prioritário para a conservação da biodiversidade dos biomas Cerrado e Caatinga (Cavalcante, 2013 O Município Brasileira localizase sob as coordenadas geográficas 4° 7' 51" S, W 41° 46' 55" (Geohack, 2019).…”