scholarly journals Diversity of Carbon Storage Economics in Fertile Boreal Spruce (Picea Abies) Estates

2021 ◽  
Vol 13 (2) ◽  
pp. 560
Author(s):  
Petri P. Kärenlampi
Keyword(s):  
Picea Abies ◽  
Uniform Distribution ◽  
Carbon Storage ◽  
Growth Rates ◽  
Sustainable Management ◽  
Excess Volume ◽  
Management Practices ◽  
The State ◽  
Optimal Rotation ◽  
Normal Forest

A “normal forest”, an idealized estate with a uniform distribution of stand ages, can be used in the study of sustainable management practices. As the normal forest contains a variety of stand ages, the characteristics of the stands can be represented in terms of a “normal stand”, with properties known as a function of age. This paper takes seven never-thinned stands as seven “normal stands”, which describe seven estates of normal forest. The intention is to study the robustness of carbon storage microeconomics to varying estate characteristics. It was found that the economically optimal rotation ages vary. The state sums of volume and capitalization, corresponding to any optimal rotation, also vary significantly. Growth rates vary more than the optimal expected stand volumes. Consequently, any excess volume related to carbon storage adds on to an almost unified basic volume. For all seven normal estates, the most economical way of increasing carbon storage is to increase the size of trees retained in thinning from above.

scholarly journals Analysis of Trends, Growth and Instability in Rice Production in Andhra Pradesh

2020 ◽  
pp. 40-46
Author(s):  
G. P. Sunandini ◽  
K. Solmon Raju Paul ◽  
Shakuntala Devi Irugu
Keyword(s):  
Growth Rate ◽  
Productivity Growth ◽  
Growth Rates ◽  
Sustainable Management ◽  
Andhra Pradesh ◽  
Management Practices ◽  
Annual Growth ◽  
Annual Growth Rate ◽  
High Productivity ◽  
The Past

The study has been taken up with the objective of investigating the trends, pattern of growth and the extent of instability in area, production and productivity of rice crop in Andhra Pradesh state over a period of five and half decades from 1959-60 to 2013-14. Compound Growth Rate and Coefficient of Variation were used to calculate the annual growth rate and instability. The area, production and productivity of rice in this period has increased by 25, 201 and 138 per cent respectively. In this period, the districts were categorised and grouped under different groups based on average productivity of rice. During the study period many of the districts moved from very low productivity to high productivity group. During 1960s, 17 districts are under very low productivity group (<1500 kg/ha) and in 2010s 13 districts are under high productivity group (>3000 kg/ha). During the period 2014-19 in the divided Andhra Pradesh contribution of different productivity groups to the states paddy production was calculated and concluded that 3 districts under high productivity group (>6000kg/ha) contributed 52 per cent of the production. During 2010s annual growth rates for area, production and productivity are 4.08, 4.02 and 1.21 respectively. In all the periods in the past five and half decades, production and productivity growth rates are higher than growth rate in area except in 2010s. Instability was higher in production and area than in productivity.  The annual growth rate and the instability of production and area are higher in 2010s. Suitable crop planning is to be initiated, adoption of sustainable management practices are to be intensified to maintain the growth rate and reduce the instability in area and production.

Study on Growth and Instability in Pulses Production in Bihar: A Decomposition Analysis

2021 ◽  
Keyword(s):  
Growth Rates ◽  
Policy Making ◽  
Management Practices ◽  
Decomposition Analysis ◽  
Crop Management ◽  
The State ◽  
Nutritional Security ◽  
Pulse Crops ◽  
Technological Interventions ◽  
Growing Population

An assessment of changes in the area, production and productivity of the pulse crops is considered helpful for their management and policy-making to ensure the nutritional security of the ever-growing population. The results revealed that the annual growth rates of production and productivity of lentils were comparatively high to other pulses.Instability indices for the area, production and productivity of green gram were 7.04, 10.84, and 9.34, respectively, lower than other pulse crops grown in the state. The decomposition analysis revealed that the yield effect of red gram was negative. Low productivity and its cultivation by the marginal and small farmers under rain-fed conditions with poor crop management practices could be the probable reason for the negative yield effect. The results showed that the area mainly influenced production, and productivity did not play any role in the state. The study emphasized the need to expand the area under pulse crops and increase their production through technological interventions.

PROBLEMS OF IMPLEMENTATION OF EUROPEAN PUBLIC-PRIVATE FORMS OF SUSTAINABLE ENTREPRENEURSHIP IN UKRAINE

2019 ◽  
pp. 14-20 ◽  
Author(s):  
Igor Bystryakov
Keyword(s):  
Sustainable Development ◽  
National Economy ◽  
Sustainable Management ◽  
Mineral Resources ◽  
The State ◽  
Sustainable Entrepreneurship ◽  
Effective Implementation ◽  
European Public

The problem issues and points of inhibition of the introduction of public-private forms of sustainable management of European type in the national economy of Ukraine are determined in order to ensure the effective implementation of the relevant principles and mechanisms in the system of sustainable development of the state and its territories, in particular in the context of water, land, forest and mineral resources. The main limitations of the system, as well as the factors of deterrence and directions of the development of public-private relations in Ukraine are revealed.

Sustainable Management of Soil for Carbon Sequestration

2017 ◽  
Vol 5 (2) ◽  
pp. 132-140 ◽  
Author(s):  
Kewat Sanjay Kumar ◽  
Keyword(s):  
Carbon Sequestration ◽  
Soil Carbon ◽  
Sustainable Management ◽  
Management Practices ◽  
Atmospheric Co2 ◽  
Carbon Pools ◽  
Carbon Stabilization ◽  
Organic C ◽  
Soil Ecosystems ◽  
C Stocks

Mechanisms governing carbon stabilization in soils have received a great deal of attention in recent years due to their relevance in the global carbon cycle. Two thirds of the global terrestrial organic C stocks in ecosystems are stored in below ground components as terrestrial carbon pools in soils. Furthermore, mean residence time of soil organic carbon pools have slowest turnover rates in terrestrial ecosystems and thus there is vast potential to sequester atmospheric CO2 in soil ecosystems. Depending upon soil management practices it can be served as source or sink for atmospheric CO2. Sustainable management systems and practices such as conservation agriculture, agroforestry and application of biochar are emerging and promising tools for soil carbon sequestration. Increasing soil carbon storage in a system simultaneously improves the soil health by increase in infiltration rate, soil biota and fertility, nutrient cycling and decrease in soil erosion process, soil compaction and C emissions. Henceforth, it is vital to scientifically explore the mechanisms governing C flux in soils which is poorly understood in different ecosystems under anthropogenic interventions making soil as a potential sink for atmospheric CO2 to mitigate climate change. Henceforth, present paper aims to review basic mechanism governing carbon stabilization in soils and new practices and technological developments in agricultural and forest sciences for C sequestration in terrestrial soil ecosystems.

Effects of peasant and indigenous soil management practices on the biogeochemical properties and carbon storage services of Andean soils of Colombia

2015 ◽  
Vol 71 ◽  
pp. 28-36 ◽  
Author(s):  
María-Cristina Ordoñez ◽  
Leopoldo Galicia ◽  
Apolinar Figueroa ◽  
Isabel Bravo ◽  
Miguel Peña
Keyword(s):  
Carbon Storage ◽  
Management Practices ◽  
Soil Management

scholarly journals Prevalence and herd-level risk factors of bovine tuberculosis in the State of Goiás, Brazil

2016 ◽  
Vol 37 (5Supl2) ◽  
pp. 3625 ◽  
Author(s):  
Willian Vilela Rocha ◽  
Valéria De Sá Jayme ◽  
Ana Lourdes Arrais de Alencar Mota ◽  
Wilia Marta Elsner Diederichsen de Brito ◽  
Glauciane Ribeiro de Castro Pires ◽  
...  
Keyword(s):  
Risk Factors ◽  
Bovine Tuberculosis ◽  
Protective Factor ◽  
Management Practices ◽  
Multiple Logistic Regression Analysis ◽  
Livestock Production ◽  
The State ◽  
Economic Losses ◽  
Strong Concentration ◽  
Herd Level

Bovine tuberculosis results in economic losses in livestock production and poses a risk to public health. This study aimed to characterize the epidemiological status of bovine tuberculosis in adult cows in the state of Goiás, Brazil. The state was divided into three sampling strata, corresponding to different livestock production circuits. A total of 18,659 animals were tested with the comparative cervical tuberculin test (CCT), in 300 randomly sampled bovine herds per stratum. An epidemiological questionnaire was used to identify health and management practices that may be associated with the presence of tuberculosis infection in the herd. In Stratum 1, dominated by beef cattle, no animals reacted to the CCT. In Stratum 2, which covers the main dairy regions of the state, the prevalence was estimated at 8.67% [5.73 to 12.74%] for herds and at 0.9% [0.21 to 1.58%] for animals. In Stratum 3, characterized by a mix of dairy, beef and dual-purpose herds, the prevalence was estimated at 1.00% [0.21 to 2.89] for herds and 0.30% [0.10 to 0.49 %] for animals. The overall prevalence in the state of Goiás was 3.43% [2.20 to 4.67%] for herds and 0.30% [0.10 to 0.49%] for animals. The multiple logistic regression analysis revealed that herd-level risk factors associated with the presence of the bovine tuberculosis are: the location of the herd in Stratum 2 (OR = 12.05 [3.52 to 41.28]) and the number of times a cow is milked per day (OR = 6.27 [2.72 to 14.44]). Regular veterinary care was identified as a protective factor (OR = 0.38 [0.15-0.94]). These results indicate that bovine tuberculosis is endemic in the state; its spatial distribution is heterogeneous with a strong concentration in dairy regions. The most intensive dairy farms are those with the highest risk, which is consistent with what other authors’ found elsewhere in Brazil. The epidemiological information generated by this study provides information for planning of risk-based surveillance actions, and justifies the adoption of free-herd certification programs for bovine tuberculosis in the main dairy regions of Goiás.

scholarly journals Status stock and Sustainable Management Measures for Moroccan Sardines

2021 ◽  
Vol 3 (2) ◽  
Author(s):  
Abdelaziz Mounir ◽  
Mohammed Znari ◽  
Hayat Elmghazl ◽  
Hassan Alahyane ◽  
Noreddine Chouikh ◽  
...  
Keyword(s):  
Marine Environment ◽  
Sustainable Management ◽  
Mediterranean Region ◽  
Optimal Level ◽  
The State ◽  
Sardina Pilchardus ◽  
Sustainable Exploitation ◽  
Management Measures ◽  
Rational And Sustainable Exploitation ◽  
Over Exploitation

This article summarizes the state of stocks of sardine, sardina pilchardus in Moroccan waters at the end of 2016 and 2018. These stocks varies according to the region,They are now in a sustainable exploitation situation:Atlantic sardine, but also stocks that have reached or are still in over-exploitation levels: Mediterranean sardine. The fi shing pressure exerted on the sardine stock exceeds the optimal level by 40%. Due to the degradation of the fragile marine environment of the Mediterranean region, generated by pollution of various origins, the overexploitation of juveniles in the coastal strip, non-responsible practices and the use of non-fi shing gearselective, it is imperative to take the necessary measures to protect the marine environment and ensure rational and sustainable exploitation of the resource. (High commission plan 2006 report).

scholarly journals Modelling tree growth to determine the sustainability of current off-take from miombo woodland: a case study from rural villages in Malawi

2016 ◽  
Vol 44 (1) ◽  
pp. 66-73 ◽  
Author(s):  
EMMA L. GREEN ◽  
FELIX EIGENBROD ◽  
KATE SCHRECKENBERG ◽  
SIMON WILLCOCK
Keyword(s):  
Ecosystem Services ◽  
Confidence Interval ◽  
Tree Growth ◽  
Growth Rates ◽  
Vegetation Dynamics ◽  
Management Practices ◽  
Sustainable Forest Management ◽  
Miombo Woodlands ◽  
Yield Model ◽  
The Impact

SUMMARYMiombo woodlands supply ecosystem services to support livelihoods in southern Africa, however, rapid deforestation has necessitated greater knowledge of tree growth and off-take rates to understand the sustainability of miombo exploitation. We established 48 tree inventory plots within four villages in southern Malawi, interviewed representatives in these same villages about tree management practices and investigated the impact of climate on vegetation dynamics in the region using the ecosystem modelling framework LPJ-GUESS. Combining our data with the forest yield model MYRLIN revealed considerable variation in growth rates across different land uses; forested lands showed the highest growth rates (1639 [95% confidence interval 1594–1684] kg ha–1 year–1), followed by settlement areas (1453 [95% confidence interval 1376–1530] kg ha–1 year–1). Based on the modelled MYRLIN results, we found that 50% of the villages had insufficient growth rates to meet estimated off-take. Furthermore, the results from LPJ-GUESS indicated that sustainable off-take approaches zero in drought years. Local people have recognized the unsustainable use of natural resources and have begun planting activities in order to ensure that ecosystem services derived from miombo woodlands are available for future generations. Future models should incorporate the impacts of human disturbance and climatic variation on vegetation dynamics; such models should be used to support the development and implementation of sustainable forest management.

scholarly journals Inventory and assessment of geosites to stimulate regional sustainable management: the northern coast of the state of São Paulo, Brazil

2019 ◽  
Vol 91 (2) ◽  
Author(s):  
MARIA DA GLÓRIA M. GARCIA ◽  
ELIANE A. DEL LAMA ◽  
LUCELENE MARTINS ◽  
CARLOS EDUARDO M. MAZOCA ◽  
CHRISTINE L.M. BOUROTTE
Keyword(s):  
Sustainable Management ◽  
Sao Paulo ◽  
The State ◽  
Northern Coast ◽  
São Paulo

scholarly journals Ecological, Cultural, and Geographical Implications of Brahea dulcis (Kunth) Mart. Insights for Sustainable Management in Mexico

2020 ◽  
Vol 12 (1) ◽  
pp. 412 ◽  
Author(s):  
Cloe X. Pérez-Valladares ◽  
Ana I. Moreno-Calles ◽  
Alejandro Casas ◽  
Selene Rangel-Landa ◽  
José Blancas ◽  
...  
Keyword(s):  
Rural Communities ◽  
Sustainable Management ◽  
Management Practices ◽  
Ground Truth ◽  
Structured Interviews ◽  
Five Factors ◽  
Palm Species ◽  
Two Stages ◽  
Palm Leaf

Palm plants provide important benefits for rural communities around the world. Of the 95 native palm species in Mexico, Brahea dulcis (Soyate palm) has been tagged as an important resource for many Mesoamerican ethnical groups. Scientific and empirical knowledge concerning Soyate is thematically fragmented and disassociated, meaning that sound sustainable management is far from established. Research of over 20 years has permitted us to document ecological, cultural and geographical outcomes of B. dulcis; thus, the present paper aims at compiling all knowledge on Soyate to eventually guide its long-term management. It was conducted in two stages: firstly, it comprised a thorough review of previous studies on the management of B. dulcis in Mexico; secondly, we integrated unpublished outcomes obtained from fieldwork, including participatory ground-truth validation and semi-structured interviews obtained from local ethnic groups. Five factors guided our compilation effort: (i) biological and ecological information, (ii) cultural importance, (iii) economic triggers, (iv) traditional management, and (v) ecological and ecogeographical implications of Soyate palm management. The present paper confirms that B. dulcis is an important cultural resource whose utilization can be traced back over 10,000 years. The leaves of Soyate are the most useful part of the palm and were profusely used in the past for thatching roofs and weaving domestic and agricultural objects. Currently, however, palm-leaf weaving is primarily oriented toward satisfying economic needs. We depicted ten management practices aimed at favoring palm availability. Most of these management practices have enhanced sustainable palm leaf harvesting; however, these practices harbor spatial trends that turn highly diverse habitats into Soyate-dominated spaces. To conclude, we propose a framework to describe sound and sustainable Soyate management in the light of the current long-term Soyate–human relationship. It is here acknowledged that Soyate has played and continues to play a critical socioeconomic and cultural role for many ethnical groups in Central Mexico. Nonetheless, emerging challenges concerning the sustainability of the whole socioecological system at a landscape level are yet to be overcome.

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