Plant and Soil Biota: Crucial for Mitigating Climate Change in Forests

Pagano, Marcela C.

doi:10.9734/bjecc/2013/2147

Cited by 6 publications

(4 citation statements)

References 39 publications

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“…Forests are a vital element of the Earth's environment, supporting biodiversity [1], maintaining soil health and clean air [2][3][4], providing cultural and ecosystem services [5,6], and mitigating climate change [7,8]. These facts are now well-established in the scientific literature and, increasingly, in the broader public consciousness.…”

Section: Introductionmentioning

confidence: 99%

Satellite Time Series and Google Earth Engine Democratize the Process of Forest-Recovery Monitoring over Large Areas

2021

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Contemporary forest-health initiatives require technologies and workflows that can monitor forest degradation and recovery simply and efficiently over large areas. Spectral recovery analysis—the examination of spectral trajectories in satellite time series—can help democratize this process, particularly when performed with cloud computing and open-access satellite archives. We used the Landsat archive and Google Earth Engine (GEE) to track spectral recovery across more than 57,000 forest harvest areas in the Canadian province of Alberta. We analyzed changes in the normalized burn ratio (NBR) to document a variety of recovery metrics, including year of harvest, percent recovery after five years, number of years required to achieve 80% of pre-disturbance NBR, and % recovery the end of our monitoring window (2018). We found harvest areas in Alberta to recover an average of 59.9% of their pre-harvest NBR after five years. The mean number of years required to achieve 80% recovery in the province was 8.7 years. We observed significant variability in pre- and post-harvest spectral recovery both regionally and locally, demonstrating the importance of climate, elevation, and complex local factors on rates of spectral recovery. These findings are comparable to those reported in other studies and demonstrate the potential for our workflow to support broad-scale management and research objectives in a manner that is complimentary to existing information sources. Measures of spectral recovery for all 57,979 harvest areas in our analysis are freely available and browseable via a custom GEE visualization tool, further demonstrating the accessibility of this information to stakeholders and interested members of the public.

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Section: Introductionmentioning

confidence: 99%

Satellite Time Series and Google Earth Engine Democratize the Process of Forest-Recovery Monitoring over Large Areas

2021

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“…Climate change can also alter forest ecosystems by affecting the microbial soils community associate to the symbiotic processes between fungal species and tree root systems (mycorrhizal association). A review study [35] highlights these effects and the need for a holistic view for studying the effects of climate change on forested ecosystems. The changes in soil physical and chemical properties in a timber sawmill dumpsite in Abakaliki, Nigeria were examined in another paper [36].…”

Section: Research Needsmentioning

confidence: 99%

Interactions of Forests, Climate, Water Resources, and Humans in a Changing Environment: Research Needs

Sun

Segura

2013

BJECC

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The aim of the special issue "Interactions of Forests, Climate, Water Resources, and Humans in a Changing Environment" is to present case studies on the influences of natural and human disturbances on forest water resources under a changing climate. Studies in this collection of six papers cover a wide range of geographic regions from Australia to Nigeria with spatial research scale spanning from a tree leaf, to a segment of forest road, and large basins with mixed land uses. These studies clearly show the strong interactions among forests, global climate change, water quantity and quality, and human activities at multiple scales. Understanding the underlying processes of response of natural ecosystems and society to global climate change is essential for developing actionable science-based climate change mitigation and adaptation strategies and methodologies. Future research should focus on feedbacks among forests, climate, water, and disturbances, and interactions of ecohydrologic systems, economics and policies using an integrated approach.

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“…In tropical soils, the removal of native vegetation for the introduction of conventional crops (monocultures) changes the plant species composition, the levels of organic matter and nutrients in the soil as well as the structure of the soil microbial community (Pagano 2013). According to Lal (2004) and Ajayi (2007), the depletion of nutrients and soil organic matter is a serious threat to agricultural production and food security in many tropical countries.…”

Section: Introductionmentioning

confidence: 99%

Dynamics of leaf litter and soil respiration in a complex multistrata agroforestry system, Pernambuco, Brazil

Costa

Araújo

Souza-Motta

et al. 2016

Environ Dev Sustain

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High litter inputs in agroforestry systems contribute to soil microbial activity, soil fertility and productivity. Considering that the cycling of organic matter is essential to the maintenance of physical-chemical and microbiological properties of the soil, the aims of this work were to estimate the production, accumulation and decomposition of litter, and assess soil microbial respiration in a complex multistrata agroforestry system located in the north-east of Brazil. This agroforestry system has three strata formed by forest and fruit trees and species of multiple uses. During 3 years (2011-2013), leaf litter was sampled monthly to account for litterfall and quarterly to account for litter accumulation. The rates of litter decomposition were estimated using the ratio produced-to-accumulated litter, and the correlation between litter fall and rainfall was calculated. Precipitation data were provided by the water and climate agency of Pernambuco (APAC). Soil samples (0-15 cm) were also taken quarterly, simultaneously with the litter accumulation samples, and soil microbial respiration was assessed using the capture, by a KOH solution, of the evolved CO 2 . The annual production of leaf litter was stable in the 3 years of study in this agroforestry system, and the monthly input of litter to the soil was influenced by rainfall, being higher in the dry seasons. The accumulated litter on the ground was constant, as was microbial activity (respiration) through time. The estimated litter decomposition rates were 1.49 (first year), 1.33 (second year) and 1.42 (third year), being considered rapid rates of decomposition. This guarantees (to the farmer) that this system is capable of maintaining soil fertility and eliminates the need for chemical fertilizers.

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Plant and Soil Biota: Crucial for Mitigating Climate Change in Forests

Cited by 6 publications

References 39 publications

Satellite Time Series and Google Earth Engine Democratize the Process of Forest-Recovery Monitoring over Large Areas

Satellite Time Series and Google Earth Engine Democratize the Process of Forest-Recovery Monitoring over Large Areas

Interactions of Forests, Climate, Water Resources, and Humans in a Changing Environment: Research Needs

Dynamics of leaf litter and soil respiration in a complex multistrata agroforestry system, Pernambuco, Brazil

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