scholarly journals Assessing Forest Production Using Terrestrial Monitoring Data

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Hubert Hasenauer ◽  
Chris S. Eastaugh
Keyword(s):  
Large Scale ◽  
Forest Biomass ◽  
Forest Sector ◽  
Inventory Data ◽  
Carbon Sequestration Potential ◽  
Forest Inventories ◽  
Needed Information ◽  
Sequestration Potential ◽  
National Forest Inventories ◽  
Interpretation Method

Accurate assessments of forest biomass are becoming an increasingly important aspect of natural resource management. Besides their use in sustainable resource usage decisions, a growing focus on the carbon sequestration potential of forests means that assessment issues are becoming important beyond the forest sector. Broad scale inventories provide much-needed information, but interpretation of growth from successive measurements is not trivial. Even using the same data, various interpretation methods are available. The mission of this paper is to compare the results of fixed-plot inventory designs and angle-count inventories with different interpretation methods. The inventory estimators that we compare are in common use in National Forest Inventories. No method should be described as “right” or “wrong”, but users of large-scale inventory data should be aware of the possible errors and biases that may be either compensated for or magnified by their choice of interpretation method. Wherever possible, several interpretation methods should be applied to the same dataset to assess the possibility of error.

scholarly journals Eucalyptus Trees Plantation: A Review on Suitability and their Beneficial Role

2021 ◽  
Vol 12 (1) ◽  
pp. 016-025
Author(s):  
Amanpreet Kaur ◽  
◽  
Rajesh Monga ◽  
Keyword(s):  
Poverty Reduction ◽  
Large Scale ◽  
Chemical Properties ◽  
High Water ◽  
Heavy Metal Accumulation ◽  
Wood Products ◽  
Forest Sector ◽  
Degraded Land ◽  
Carbon Sequestration Potential ◽  
Sequestration Potential

Eucalyptus is fastest growing species popularly known as gum tree, red iron tree, safeda and belonging to the family Myrtaceae. E. tereticornis and E. grandis are important commercial species with a clean straight bole and compact crown. Large scale plantations have been raised on forest and farm lands, community lands, field boundaries and road/rail/canal strips in India. It is most suitable species for degraded land, waterlogged areas, problematic soils etc. Although, it is a controversial tree because of high water consumption, nutrient depletion, allopathic effects etc., it is also source of pulp, paper, essential oil, timber, medicinal use, etc. Moreover it also provides ecological, socioeconomic and industrial services. Improvement in physical and chemical properties of on Sodic wastelands, heavy metal accumulation in different tissues of in mined soil; carbon sequestration potential, etc. were reported in studies. On unit basis of dry biomass produced, it consumes very little water compared to other trees. If bark of the tree is left on site, the balance of nutrients remaining is (80-88%) of inputs for N, P, K, Ca and Mg which lasts for several years without considering the original nutrients that are still present in soil. In the face of growing economy and increased demand for wood products, it remains to be the desired species that grows fast and produce wood to meet the demand of wood for fuel, construction and furniture materials. Relieving wood product scarcity, landscape re-greening, contribution to poverty reduction, biodiversity restoration and conservation are valuable contribution in forest sector.

scholarly journals About the benefits of poststratification in forest inventories

2008 ◽  
Vol 53 (No. 4) ◽  
pp. 139-148 ◽  
Author(s):  
J. Saborowski ◽  
J. Cancino
Keyword(s):  
Large Scale ◽  
Systematic Sampling ◽  
Inventory Data ◽  
Sample Sizes ◽  
Forest Inventories ◽  
Virtual Population ◽  
Random Samples ◽  
Gis Data ◽  
Forest District ◽  
Unconditional Variance

A large virtual population is created based on the GIS data base of a forest district and inventory data. It serves as a population where large scale inventories with systematic and simple random poststratified estimators can be simulated and the gains in precision studied. Despite their selfweighting property, systematic samples combined with poststratification can still be clearly more efficient than unstratified systematic samples, the gain in precision being close to that resulting from poststratified over simple random samples. The poststratified variance estimator for the conditional variance given the within strata sample sizes served as a satisfying estimator in the case of systematic sampling. The differences between conditional and unconditional variance were negligible for all sample sizes analyzed.

scholarly journals A Tutorial on Model-Assisted Estimation with Application to Forest Inventory

Forests ◽  
2020 ◽  
Vol 11 (2) ◽  
pp. 244 ◽  
Author(s):  
Kelly S. McConville ◽  
Gretchen G. Moisen ◽  
Tracey S. Frescino
Keyword(s):  
Forest Inventory ◽  
R Package ◽  
Remotely Sensed ◽  
Variance Estimator ◽  
Inventory Data ◽  
Remotely Sensed Data ◽  
Forest Inventories ◽  
Regression Estimators ◽  
National Forest Inventories ◽  
The Many

National forest inventories in many countries combine expensive ground plot data with remotely-sensed information to improve precision in estimators of forest parameters. A simple post-stratified estimator is often the tool of choice because it has known statistical properties, is easy to implement, and is intuitive to the many users of inventory data. Because of the increased availability of remotely-sensed data with improved spatial, temporal, and thematic resolutions, there is a need to equip the inventory community with a more diverse array of statistical estimators. Focusing on generalized regression estimators, we step the reader through seven estimators including: Horvitz Thompson, ratio, post-stratification, regression, lasso, ridge, and elastic net. Using forest inventory data from Daggett county in Utah, USA as an example, we illustrate how to construct, as well as compare the relative performance of, these estimators. Augmented by simulations, we also show how the standard variance estimator suffers from greater negative bias than the bootstrap variance estimator, especially as the size of the assisting model grows. Each estimator is made readily accessible through the new R package, mase. We conclude with guidelines in the form of a decision tree on when to use which an estimator in forest inventory applications.

scholarly journals REDD+ as a tool for state territorialization: managing forests and people in Laos

2019 ◽  
Vol 26 (1) ◽  
pp. 263 ◽  
Author(s):  
Sabaheta Ramcilovik-Suominen
Keyword(s):  
Carbon Sequestration ◽  
Shifting Cultivation ◽  
Large Scale ◽  
Management Practices ◽  
Technical Assistance ◽  
Policy Design ◽  
Forest Degradation ◽  
Carbon Sequestration Potential ◽  
The North ◽  
Sequestration Potential

<p>This article analyzes the Reduction of Emissions from Deforestation and Forest Degradation (REDD+) policy process, through the lens of state territorialization in the Lao People's Democratic Republic (Laos). It explores the motivations, mechanisms and strategies that drive REDD+ policy design and its implementation in the country. The provinces selected for REDD+ activities within the Emission Reduction (ER) Program, as well as the various REDD+ pilot projects are located in the north, where shifting cultivation is widespread, but where the potential for REDD+ to address deforestation and carbon sequestration is not optimal. The provinces with high carbon sequestration potential and high rates of deforestation are not part of the ER Program due to development investment projects and political sensitivity in those areas. REDD+ acts as a tool for state territorialization in a number of ways, including: (i) by targeting the areas where shifting cultivation is widely practiced, aiming to regulate village forest uses and users, (ii) by protecting state political, economic and development goals and strategies, by leaving the profitable large-scale drivers of deforestation unaddressed, including large-scale land investments, hydropower, infrastructure and mining development, and finally (iii) by providing additional motives, tools and discourses for state territorialization, including funding, technologies and the narratives that support it. I highlight, however, that REDD+ is not the sole reason for state territorial politics and practices. Rather, the instrument is layered over previous histories of colonial and post-colonial territorialization processes, continuing a similar logic, rhetoric and management practices. The REDD+ design and its technical orientation, however, appear to provide additional motives, as well as a new pool of resources, technical assistance and modern technologies that intensify the practice and politics of state territoriality in Laos.</p><p><strong>Keywords: </strong>Laos, REDD+, state territorialization,<strong> </strong>forest politics, drivers of deforestation</p>

Carbon sequestration potential of cropland reforestation on the northern slope of the Tianshan Mountains

2016 ◽  
Vol 96 (4) ◽  
pp. 461-471 ◽  
Author(s):  
Lu Li ◽  
Yapeng Chang ◽  
Xiaofei Li ◽  
Xuewei Qiao ◽  
Qinghui Luo ◽  
...  
Keyword(s):  
Global Climate ◽  
Land Use Changes ◽  
Forest Biomass ◽  
Tianshan Mountains ◽  
Distribution Models ◽  
Carbon Sequestration Potential ◽  
The North ◽  
Sequestration Potential ◽  
Soil Carbon Stocks ◽  
Abandoned Cropland

The effect of land-use changes on soil carbon stocks has been an increasing concern in the context of global climate change. Through natural reforestation programs, abandoned cropland holds the potential of sequestering soil organic carbon (SOC) if the original forest could be recovered. In this study, we initially delineated the potential distribution of forest species on the north slope of the Tianshan Mountains using species distribution models. We then estimated the corresponding sequestration potential of SOC in the area delineated for reforestation. The deforestated area of a Picea schrenkiana forest converted to cropland (PSC) was defined by the potential and actual distributions of forest and cropland. The SOC contents of the forest and cropland soils were obtained through field sampling and laboratory analysis. We found that the area of the PSC was 26.77 × 105 ha, and the SOC loss (per unit area) derived from the conversion of forestland to cropland was 171.70 ± 28.20 Mg ha−1. The total SOC loss from the study area was 459.70 ± 75.49 Tg. This result implies that continuing the reforestation programs being implemented in the study area would increase SOC by the same amount. Additionally, we also estimated the total amount of carbon that would be sequestered in the aboveground and underground forest biomass on former cropland.

scholarly journals Large-scale semi-arid afforestation can enhance precipitation and carbon sequestration potential

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Gil Yosef ◽  
Robert Walko ◽  
Roni Avisar ◽  
Fedor Tatarinov ◽  
Eyal Rotenberg ◽  
...  
Keyword(s):  
Carbon Sequestration ◽  
Large Scale ◽  
Carbon Sequestration Potential ◽  
Sequestration Potential ◽  
Semi Arid
Sign in / Sign up

Export Citation Format

Share Document