scholarly journals Soil Carbon Sequestration in Novel Ecosystems at Post-Mine Sites—A New Insight into the Determination of Key Factors in the Restoration of Terrestrial Ecosystems

Forests ◽  
2022 ◽  
Vol 13 (1) ◽  
pp. 63
Author(s):  
Amisalu Milkias Misebo ◽  
Marcin Pietrzykowski ◽  
Bartłomiej Woś
Keyword(s):  
Vegetation Type ◽  
Accumulation Rate ◽  
Terrestrial Ecosystems ◽  
Key Factors ◽  
Tree Species Composition ◽  
Climate Conditions ◽  
Mining Sites ◽  
Scientific Papers ◽  
Restoration Age ◽  
Mine Sites

Mining activities are one of the main causes of land degradation around the world and reduce the quality of the surrounding ecosystems. Restoration approaches using different vegetations and reclamation methods have been implemented to address this issue. In this review, paper, different studies focusing on the effect of the restoration of mining sites on the accumulation of soil organic carbon (SOC) were analyzed. SOC in reclaimed mining soil (RMS) increased considerably after various restoration efforts were implemented. The amount of SOC accumulated in RMS was mostly influenced by the restoration age, vegetation type, and substrate or type of reclamation used. From the scientific papers analyzed, we found that SOC accumulation increases with restoration age; however, vegetation type and reclamation have varied effects. According to the review, the restoration of mine sites with vegetation resulted in a rate of SOC accumulation ranging from 0.37 to 5.68 Mg SOC ha−1 year−1. Climate conditions influenced the type of vegetation used for restoration. Regrading, liming, NPK fertilization, and seeding a mix of legumes and grasses were the most efficient reclamation techniques. Additionally, the use of grass and legume better facilitates the early accumulation of SOC compared with afforestation. Thus, the selection of appropriate tree species composition, reclamation treatments, and restoration age are the key factors for a high SOC accumulation rate.

scholarly journals Potential shift from a carbon sink to a source in Amazonian peatlands under a changing climate

2018 ◽  
Vol 115 (49) ◽  
pp. 12407-12412 ◽  
Author(s):  
Sirui Wang ◽  
Qianlai Zhuang ◽  
Outi Lähteenoja ◽  
Frederick C. Draper ◽  
Hinsby Cadillo-Quiroz
Keyword(s):  
21St Century ◽  
Carbon Sink ◽  
Accumulation Rate ◽  
Foreland Basin ◽  
Carbon Accumulation ◽  
Climate Conditions ◽  
Changing Climate ◽  
Soil Carbon Density ◽  
Increasing Precipitation ◽  
Aerobic And Anaerobic

Amazonian peatlands store a large amount of soil organic carbon (SOC), and its fate under a future changing climate is unknown. Here, we use a process-based peatland biogeochemistry model to quantify the carbon accumulation for peatland and nonpeatland ecosystems in the Pastaza-Marañon foreland basin (PMFB) in the Peruvian Amazon from 12,000 y before present to AD 2100. Model simulations indicate that warming accelerates peat SOC loss, while increasing precipitation accelerates peat SOC accumulation at millennial time scales. The uncertain parameters and spatial variation of climate are significant sources of uncertainty to modeled peat carbon accumulation. Under warmer and presumably wetter conditions over the 21st century, SOC accumulation rate in the PMFB slows down to 7.9 (4.3–12.2) g⋅C⋅m−2⋅y−1 from the current rate of 16.1 (9.1–23.7) g⋅C⋅m−2⋅y−1, and the region may turn into a carbon source to the atmosphere at −53.3 (−66.8 to −41.2) g⋅C⋅m−2⋅y−1 (negative indicates source), depending on the level of warming. Peatland ecosystems show a higher vulnerability than nonpeatland ecosystems, as indicated by the ratio of their soil carbon density changes (ranging from 3.9 to 5.8). This is primarily due to larger peatlands carbon stocks and more dramatic responses of their aerobic and anaerobic decompositions in comparison with nonpeatland ecosystems under future climate conditions. Peatland and nonpeatland soils in the PMFB may lose up to 0.4 (0.32–0.52) Pg⋅C by AD 2100 with the largest loss from palm swamp. The carbon-dense Amazonian peatland may switch from a current carbon sink into a source in the 21st century.

scholarly journals Distribution of Contaminated Soils along Transversal and Longitudinal Gradients in Dynamic Fluvial Environment (Southern Québec, Canada)

2015 ◽  
Vol 8 ◽  
pp. ASWR.S22465 ◽  
Author(s):  
Diane Saint-Laurent ◽  
Francis Baril ◽  
Ilias Bazier ◽  
Vernhar Gervais-Beaulac ◽  
Camille Chapados
Keyword(s):  
Spatial Distribution ◽  
Contaminated Soils ◽  
Soil Samples ◽  
Copper Mining ◽  
Mining Sites ◽  
Mining Areas ◽  
Pb Contamination ◽  
Flood Zone ◽  
Longitudinal Gradients ◽  
Mine Sites

This research combines a hydrological and pedological approach to better understand the spatial distribution of contaminated soils along the Massawippi River (southern Québec, Canada). This river crosses through former mines, which were some of the largest copper mining areas in North America from 1865 to 1939. To determine the spatial distribution and concentration of the metal elements, soil samples were taken in each flood recurrence zone appearing on official flood zone maps. The maximum values obtained for Cu and Pb are 380 and 200 mg kg−1, respectively, for the soils in the frequent flood zones (FFzs), while the values for soils in the moderate flood zones (MFzs) range from 700 to 540 (Cu) and 580 to 460 mg kg−1 (Pb). Contamination extends through several kilometers of the former mining sites (Eustis and Capleton), and concentration of metals in alluvial soils is slightly higher near the mine sites.

scholarly journals SOIL DEVELOPMENT AND PROPERTIES OF MICROBIAL BIOMASS SUCCESSION IN RECLAIMED SITES IN BULGARIA

2019 ◽  
Vol 7 ◽  
pp. 1008-1014
Author(s):  
Veneta V. Stefanova ◽  
Petar G. Petrov
Keyword(s):  
Heavy Metals ◽  
Microbial Activity ◽  
Vegetation Type ◽  
Soil Microbial Activity ◽  
Soil Development ◽  
Substrate Quality ◽  
Mining Sites ◽  
Soil Microbial ◽  
Physico Chemical ◽  
Chemical Conditions

One of the most important preconditions of ecosystem rehabilitation in post mining landscapes is the process of soil development. In this context, the microbial activity in soil plays an important role. Microbial activity was studied in several reclaimed post mining sites resulted from the mining activity in Bulgaria. The studied soils are characterized by different biogenicity. The development of the total microflora in soils is higher in the surface layers but in depth, their number decreases due to the inhibiting effect of pollutants (heavy metals) and a change in the physico-chemical conditions. The dominant microorganisms are non-spore bacteria and all studied soils showed the development of pigment types of bacteria resulting from the high content of heavy metals. The composition of the microorganisms is poor, which can be taken as an indicator that the microbicenosis is still in the process of formation. In depth, their number is reduced by applying the effect of contamination. The mineralization coefficient values are the highest in the field with the greatest age of re-cultivation, where humidification is the most advanced. The study shows that vegetation type and litter quality seem to be more important for soil microbial activity than the substrate quality on the reclaimed sites.

scholarly journals Tracking vegetation phenology across diverse North American biomes using PhenoCam imagery

2018 ◽  
Vol 5 (1) ◽  
Author(s):  
Andrew D. Richardson ◽  
Koen Hufkens ◽  
Tom Milliman ◽  
Donald M. Aubrecht ◽  
Min Chen ◽  
...  
Keyword(s):  
Climate Change ◽  
Vegetation Type ◽  
Digital Camera ◽  
Region Of Interest ◽  
Remote Sensing Data ◽  
Climate Change Impacts ◽  
Terrestrial Ecosystems ◽  
Vegetation Phenology ◽  
Phenological Model ◽  
Vegetation Activity

Abstract Vegetation phenology controls the seasonality of many ecosystem processes, as well as numerous biosphere-atmosphere feedbacks. Phenology is also highly sensitive to climate change and variability. Here we present a series of datasets, together consisting of almost 750 years of observations, characterizing vegetation phenology in diverse ecosystems across North America. Our data are derived from conventional, visible-wavelength, automated digital camera imagery collected through the PhenoCam network. For each archived image, we extracted RGB (red, green, blue) colour channel information, with means and other statistics calculated across a region-of-interest (ROI) delineating a specific vegetation type. From the high-frequency (typically, 30 min) imagery, we derived time series characterizing vegetation colour, including “canopy greenness”, processed to 1- and 3-day intervals. For ecosystems with one or more annual cycles of vegetation activity, we provide estimates, with uncertainties, for the start of the “greenness rising” and end of the “greenness falling” stages. The database can be used for phenological model validation and development, evaluation of satellite remote sensing data products, benchmarking earth system models, and studies of climate change impacts on terrestrial ecosystems.

scholarly journals Soil nitrogen cycle unresponsive to decadal long climate change in a Tasmanian grassland

2019 ◽  
Vol 147 (1) ◽  
pp. 99-107 ◽  
Author(s):  
Tobias Rütting ◽  
Mark J. Hovenden
Keyword(s):  
Climate Change ◽  
Atmospheric Carbon Dioxide ◽  
Carbon Sink ◽  
Vegetation Type ◽  
Terrestrial Ecosystems ◽  
Soil N ◽  
Mineral N ◽  
N Dynamics ◽  
Terrestrial Carbon Sink ◽  
Soil Nitrogen Cycle

AbstractIncreases in atmospheric carbon dioxide (CO2) and global air temperature affect all terrestrial ecosystems and often lead to enhanced ecosystem productivity, which in turn dampens the rise in atmospheric CO2 by removing CO2 from the atmosphere. As most terrestrial ecosystems are limited in their productivity by the availability of nitrogen (N), there is concern about the persistence of this terrestrial carbon sink, as these ecosystems might develop a progressive N limitation (PNL). An increase in the gross soil N turnover may alleviate PNL, as more mineral N is made available for plant uptake. So far, climate change experiments have mainly manipulated one climatic factor only, but there is evidence that single-factor experiments usually overestimate the effects of climate change on terrestrial ecosystems. In this study, we investigated how simultaneous, decadal-long increases in CO2 and temperature affect the soil gross N dynamics in a native Tasmanian grassland under C3 and C4 vegetation. Our laboratory 15N labeling experiment showed that average gross N mineralization ranged from 4.9 to 11.3 µg N g−1 day−1 across the treatment combinations, while gross nitrification was about ten-times lower. Considering all treatment combinations, no significant effect of climatic treatments or vegetation type (C3 versus C4 grasses) on soil N cycling was observed.

scholarly journals Effects of the Physiological Age of Bananas on Their Susceptibility to Wound Anthracnose Due to Colletotrichum musae

Plant Disease ◽  
2006 ◽  
Vol 90 (9) ◽  
pp. 1181-1185 ◽  
Author(s):  
M. Chillet ◽  
O. Hubert ◽  
M. J. Rives ◽  
L. de Lapeyre de Bellaire
Keyword(s):  
Accumulation Rate ◽  
Critical Factor ◽  
Physiological Age ◽  
Climate Conditions ◽  
Temperature Sum ◽  
Early Ripening ◽  
Growing Conditions ◽  
Lower Temperature ◽  
Source Sink ◽  
Colletotrichum Musae

Wound anthracnose, caused by Colletotrichum musae, and early ripening are the main problems affecting the quality of export bananas (Musa AAA Cavendish) from the Caribbean. These problems generally concern bananas grown in lowland plantations during the rainy season. Three experiments were carried out to study the influence of the physiological age of bananas, calculated on the basis of mean daily temperature sums, on their susceptibility to anthracnose. Stressful growing conditions, especially soil flooding, slowed fruit growth but had no direct effect on fruit susceptibility to C. musae or on the green life. However, fruit that had accumulated lower temperature sums were less susceptible to wound anthracnose. By varying the source-sink ratio, we show that bananas of the same grade but different physiological ages had markedly different susceptibility to C. musae. Bananas with the same temperature sum accumulation but grown in different soil-climate conditions had different levels of susceptibility. Fruit grown in cooler, highland areas were less susceptible to C. musae than fruit of the same physiological age from lowland plantations. Our results suggest that temperature sum accumulation rate is a critical factor affecting the susceptibility of bananas to the pathogen.

scholarly journals THE ASSESSMENT OF CLIMATE CHANGE AND WATERSHED EFFECT ON THE HETEROTROPHIC METABOLISM IN THE LAKE ONEGO ECOSYSTEM

2017 ◽  
Vol 1 ◽  
pp. 140 ◽  
Author(s):  
N. M. Kalinkina ◽  
L. E. Nazarova ◽  
E. V. Tekanova ◽  
P. Yu. Litinsky ◽  
A. I. Sidorova
Keyword(s):  
Climate Change ◽  
Organic Matter ◽  
Benthic Communities ◽  
Terrestrial Ecosystems ◽  
Water Bodies ◽  
Balance Study ◽  
Climate Conditions ◽  
Different Types ◽  
Heterotrophic Metabolism ◽  
Matter Flow

Lake Onego, as one of the largest water bodies in a humid zone, is the recipient of terrestrial carbon and plays an important role in the global balance of this element. Due to heterotrophic metabolism in the Lake Onego ecosystem, substantial emissions of carbon dioxide from this lake into the atmosphere can be assumed. However, the extent of this phenomenon is still poorly known. As a climate change has led to an increase in water and organic matter flow into the northern water bodies, the carbon balance study of aquatic ecosystems is of particular relevance. The elements of the water balance for the Lake Onego catchment area in the current climate conditions are assessed. Based on satellite images the model of Lake Onego watershed terrestrial ecosystems is used to simulate the flow of organic matter into the lake with different types of vegetation and topography consideration. The assessment of the benthic communities habitat is carried out taking into account the accumulation of organic matter in various parts of Lake Onego.

scholarly journals Implementation and validation of a new irrigation scheme in the ISBA land surface model

2021 ◽  
Author(s):  
Arsène Druel ◽  
Simon Munier ◽  
Anthony Mucia ◽  
Clément Albergel ◽  
Jean-Christophe Calvet
Keyword(s):  
Land Surface ◽  
Vegetation Type ◽  
Spatial Scales ◽  
Terrestrial Ecosystems ◽  
Moisture Stress ◽  
Surface Model ◽  
Irrigation Scheme ◽  
Area Index ◽  
Natural Processes ◽  
The Impact

Abstract. With an increase in the number of natural processes represented, global land surface models (LSMs) have become more and more accurate in representing natural terrestrial ecosystems. However, they are still limited, especially in the representation of the impact of agriculture on land surface variables. This is particularly true for agro-hydrological processes related to a strong human control on freshwater. While most LSMs consider natural processes only, the development of human-related processes, e.g. crop phenology and irrigation in LSMs, is key. In this study we present the implementation of a new irrigation scheme in the ISBA (Interaction between Soil, Biosphere, and Atmosphere) LSM. This highly flexible scheme is designed to account for various configurations and can be applied at different spatial scales. For each vegetation type within a model grid cell, three irrigation systems can be used at the same time. A limited number of parameters are used to control (1) the amount of water used for irrigation, (2) irrigation triggering (based on the soil moisture stress) and (3) crop seasonality (emergence, harvesting). After a presentation of the simulations of the new scheme at a plot scale, an evaluation is proposed over Nebraska (USA). This region is chosen for its high irrigation density and because independent observations of irrigation practices can be used to verify the simulated irrigation amounts. The ISBA simulations with and without the irrigation scheme are compared to different satellite-based observations. The comparison shows that the irrigation scheme improves the simulated vegetation variables such as leaf area index and gross primary productivity and other variables largely impacted by irrigation such as evapotranspiration and land surface temperature. In addition to a better representation of land surface processes, the results point to potential applications of this new version of the ISBA model for water resource monitoring and climate change impact studies.

scholarly journals Aspectos estructurales, composición florística y caracterización ecológica del bosque de oyamel de la Sierra de Zapalinamé, Coahuila, México

2017 ◽  
pp. 13 ◽  
Author(s):  
Juan A. Encina-Domínguez ◽  
Francisco J. Encina-Domínguez ◽  
Efrén Mata-Rocha ◽  
Jesús Valdes-Reyna
Keyword(s):  
State Government ◽  
Chihuahuan Desert ◽  
Vegetation Type ◽  
Floristic Composition ◽  
The State ◽  
Spruce Forest ◽  
Ecological Value ◽  
Importance Value ◽  
Important Species ◽  
Climate Conditions

The sierra de Zapalinamé lies at the southeastern portian of the State of Coahuila, in a transitional area between the Chihuahuan Desert Region and the Sierra Madre Oriental. lt has the status of a protected natural area by the state government. The Chihuahuan desert scrub is the most common vegetation type; however, spruce forest grows where the climate conditions are cold and temperate. Ten circular plots of 1,000 m2 were established to determine the floristic composition, structure of the forest and other ecological variables. Diameter and height were measured for every tree and shrubs and herbs were recorded. Seedlings were evaluated in five plots of 2 m2 per site. Attributes of the vegetation like density, basal area and the importance value of the tree species were estimated. The spruce forest of the sierra de Zapalinamé is found between 2,668 to 3,025 m of elevation where the annual average precipitation rain varies from 560 to 600 mm and with a temperature of 12.5ºC, over litosol soils with a slope of 34% to 70%. The forest is dominated by Abies vejarii, species which grows at elevated places and another important species is Pseudotsuga menziesii. Regeneration is of a few seedlings; nevertheless, due to microclime and soil sorne regeneration is successful. A total 73 species were recorded in these forests, being the most diverse Asteraceae (15 species), Pinaceae (4) and Poaceae (4). Conservation of the spruce forest is important due to its ecological value; in addition Abies vejarii is listed under status of conservation in the Mexican red list, and also because a number endemic species of plants are in this protected area.

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