scholarly journals Forest cover dynamics of the Bazoy Siberian pine (Pinus sibirica Du Tour) forest from 1915 to 2015

2020 ◽  
Vol 73 (1) ◽  
pp. 52-63
Author(s):  
Nikita Debkov ◽  
Victor Sidorenkov ◽  
Elena Sidorenkova ◽  
Vladimir Sedykh
Keyword(s):  
Forest Cover ◽  
Food Product ◽  
Pine Forests ◽  
West Siberian Plain ◽  
Pinus Sibirica ◽  
Human Economic Activity ◽  
Pine Stands ◽  
Siberian Pine ◽  
The Impact

Abstract The article considers the long-term (100 years) dynamics of the forest cover of the southernmost unit of Siberian pine forests on the West Siberian plain. A key feature of forest management is that Siberian pine seeds are a valuable food product and, when cutting forests, this tree species, as a rule, is preserved. The basis of the experimental data was the material of the national forest inventories of 1915, 1974 and 2015 for a total area of 1,420.41 ha. During the period from 1915 to 2015, the forested area changed slightly (96.2 and 94.0%), while the share of Siberian pine stands increased significantly from 48.4 to 58.7%. Grassy Siberian pine forests (32.1%) of optimal age (120–140 years), which are characterised by the best seed productivity and the largest share of Siberian pine in the community (77%), predominate. Basically, human economic activity results in an increase in the area of Siberian pine stands, when deciduous stands with Siberian pine undergrowth are used for fuel and as building material. A decrease in the area of Siberian pine forests occurs mainly under the impact of fires. In the conflagrations of 1915–1920, 7 to 38% of silver birch forests have no Siberian pine undergrowth and are considered long-term secondary communities. In the remaining area, the proportion of Siberian pine undergrowth is 20–30% with a density of 800–1200 seedlings ha−1, which is sufficient for the natural formation of Siberian pine forests.

scholarly journals Does afforestation deteriorate haze pollution in Beijing–Tianjin–Hebei (BTH), China?

2018 ◽  
Author(s):  
Xin Long ◽  
Naifang Bei ◽  
Jiarui Wu ◽  
Xia Li ◽  
Tian Feng ◽  
...  
Keyword(s):  
Forest Cover ◽  
Fine Particles ◽  
Control Strategies ◽  
Surface Wind ◽  
Forecast Model ◽  
Surface Wind Speed ◽  
Satellite Measurements ◽  
Haze Pollution ◽  
The Impact

Abstract. Although aggressive emission control strategies have been implemented recently in the Beijing–Tianjin–Hebei area (BTH), China, pervasive and persistent haze still frequently engulfs the region during wintertime. Afforestation in BTH, primarily concentrated in the Taihang and Yanshan Mountains, has constituted one of the controversial factors exacerbating the haze pollution due to its slowdown of the surface wind speed. We report here an increasing trend of forest cover in BTH during 2001–2013 based on long-term satellite measurements and the impact of the afforestation on the fine particles (PM2.5) level. Simulations using the Weather Research and Forecast model with chemistry reveal that the afforestation in BTH since 2001 generally deteriorates the haze pollution in BTH to some degree, enhancing PM2.5 concentrations by up to 6 % on average. Complete afforestation or deforestation in the Taihang and Yanshan Mountains would increase or decrease the PM2.5 level within 15 % in BTH. Our model results also suggest that implementing a large ventilation corridor system would not be effective or beneficial to mitigate the haze pollution in Beijing.

scholarly journals MODELING PRECIPITATION DEPENDENT FOREST RESILIENCE IN INDIA

2018 ◽  
Vol XLII-3 ◽  
pp. 263-266 ◽  
Author(s):  
P. Das ◽  
M. D. Behera ◽  
P. S. Roy
Keyword(s):  
Forest Cover ◽  
Vegetation Type ◽  
Annual Precipitation ◽  
Mean Annual Precipitation ◽  
High Tendency ◽  
North East India ◽  
North East ◽  
Forest Resilience ◽  
The Impact

The impact of long term climate change that imparts stress on forest could be perceived by studying the regime shift of forest ecosystem. With the change of significant precipitation, forest may go through density change around globe at different spatial and temporal scale. The 100 class high resolution (60 meter spatial resolution) Indian vegetation type map was used in this study recoded into four broad categories depending on phrenology as (i) forest, (ii) scrubland, (iii) grassland and (iv) treeless area. The percentage occupancy of forest, scrub, grass and treeless were observed as 19.9&amp;thinsp;%, 5.05&amp;thinsp;%, 1.89&amp;thinsp;% and 7.79&amp;thinsp;% respectively. Rest of the 65.37&amp;thinsp;% land area was occupied by the cropland, built-up, water body and snow covers. The majority forest cover were appended into a 5&amp;thinsp;km&amp;thinsp;&amp;times;&amp;thinsp;5&amp;thinsp;km grid, along with the mean annual precipitation taken from Bioclim data. The binary presence and absence of different vegetation categories in relates to the annual precipitation was analyzed to calculate their resilience expressed in probability values ranging from 0 to 1. Forest cover observed having resilience probability (Pr) &amp;lt;&amp;thinsp;0.3 in only 0.3&amp;thinsp;% (200&amp;thinsp;km<sup>2</sup>) of total forest cover in India, which was 4.3&amp;thinsp;% &amp;lt;&amp;thinsp;0.5&amp;thinsp;Pr. Majority of the scrubs and grass (64.92&amp;thinsp;% Pr&amp;thinsp;&amp;lt;&amp;thinsp;0.5) from North East India which were the shifting cultivation lands showing low resilience, having their high tendency to be transform to forest. These results have spatial explicitness to highlight the resilient and non-resilient distribution of forest, scrub and grass, and treeless areas in India.

scholarly journals Historical Aerial Surveys Map Long-Term Changes of Forest Cover and Structure in the Central Congo Basin

2020 ◽  
Vol 12 (4) ◽  
pp. 638 ◽  
Author(s):  
Koen Hufkens ◽  
Thalès de Haulleville ◽  
Elizabeth Kearsley ◽  
Kim Jacobsen ◽  
Hans Beeckman ◽  
...  
Keyword(s):  
Tropical Forest ◽  
Forest Cover ◽  
Congo Basin ◽  
Spatial And Temporal Patterns ◽  
Smallholder Farming ◽  
Aboveground Carbon ◽  
Decadal Scale ◽  
Long Term Changes ◽  
The Impact

Given the impact of tropical forest disturbances on atmospheric carbon emissions, biodiversity, and ecosystem productivity, accurate long-term reporting of Land-Use and Land-Cover (LULC) change in the pre-satellite era (<1972) is an imperative. Here, we used a combination of historical (1958) aerial photography and contemporary remote sensing data to map long-term changes in the extent and structure of the tropical forest surrounding Yangambi (DR Congo) in the central Congo Basin. Our study leveraged structure-from-motion and a convolutional neural network-based LULC classifier, using synthetic landscape-based image augmentation to map historical forest cover across a large orthomosaic (~93,431 ha) geo-referenced to ~4.7 ± 4.3 m at submeter resolution. A comparison with contemporary LULC data showed a shift from previously highly regular industrial deforestation of large areas to discrete smallholder farming clearing, increasing landscape fragmentation and providing opportunties for substantial forest regrowth. We estimated aboveground carbon gains through reforestation to range from 811 to 1592 Gg C, partially offsetting historical deforestation (2416 Gg C), in our study area. Efforts to quantify long-term canopy texture changes and their link to aboveground carbon had limited to no success. Our analysis provides methods and insights into key spatial and temporal patterns of deforestation and reforestation at a multi-decadal scale, providing a historical context for past and ongoing forest research in the area.

scholarly journals KETERAMPILAN PENGOLAHAN MIE SEHAT DARI SAYUR SAWI UNTUK MENINGKATKAN GIZI DAN IMUNITAS TUBUH DI DESA SEI ASAM KELURAHAN SEI PASA KABUPATEN KAPUAS KALIMANTAN TENGAH

2018 ◽  
Vol 17 (2) ◽  
pp. 144-148
Author(s):  
Adelgrit Trisia ◽  
Indria Augustina ◽  
Dian Mutia
Keyword(s):  
Food Product ◽  
Rice Flour ◽  
Nutritional Content ◽  
Counseling Training ◽  
The People ◽  
Processed Products ◽  
Tapioca Flour ◽  
The Impact ◽  
The Village

Noodle is a popular food product and widely consumed by the people in Indonesia. The world of commerce knows noodles in a variety of products Because the main ingredients are wheat flour, tapioca flour or rice flour, then the greatest nutritional content in noodles and processed products is carbohydrates. Foods consumed with unbalanced nutritional content, which are high in fat/oil, high carbohydrate, high salt, and low in fiber. The impact that occurs with food with unbalanced nutrition, for the long term is the emergence of degenerative diseases such as diabetes, cardiovascular diseases such as heart and hypertension, and cancer and others. The main objective is to increase knowledge and understanding of the villagers of Sei Asem regarding the processing of healthy noodles based on vegetables. Specific Objectives To help improve the knowledge of villagers to process healthy noodles made from vegetables. Attempts to raise awareness of the villagers about the importance of processing food based on the healthy life of the household. Attempts to improve the health status of the community in the village of Sei Asam Method of Implementation of Community Partnership Program activities by way of counseling, training and mentoring. The results obtained from this activity is the increasing knowledge of the villagers about the benefits of Sawi vegetable, processing of sawi vegetables into noodles and one of the efforts to increase the consumption of balanced nutrition that can increase immunity.

Formation of Siberian Pine Forests by Improvement Felling on Former Agriculturаl Lands

2021 ◽  
pp. 9-19
Author(s):  
Sergey V. Zalesov ◽  
Keyword(s):  
Pine Forests ◽  
Pinus Sibirica ◽  
Single Shot ◽  
Agricultural Lands ◽  
Herbaceous Vegetation ◽  
Second Stage ◽  
Pine Trees ◽  
Pinus Sibirica Du Tour ◽  
Siberian Pine ◽  
Intensive Growth

On the base of the researches carried out on the permanent study area silvicultural effectiveness of improvement felling was analyzed in soft-leaved plantations formed on the former agricultural lands in Khanty-Mansi Autonomons Okrug – Yugra. It was experimentally found that among 25–30-year-old soft-leaved stands there is Siberian pine (Pinus sibirica Du Tour); besides this, nominal undergrowth of this species can be found under the canopy. Improvement felling can provide an increase in the share of Siberian pine in the composition of the forming plantations and even its dominance in stands. It is recommended to carry out improvement felling by the strip method. On the first-stage the felling of soft-leaved species in strips of 10 m wide is carried out, while leaving strips of similar width without care. On the second stage in 10 years soft-leaved trees are cut down in those strips where care was not taken. Felling of all the accompanying Siberian pine trees in a single shot is inadmissible, since it leads to intensive growth of herbaceous vegetation, sodding and exclusion of the Siberian pine undergrowth as well as dramatically increases the fire danger in spring and autumn. In addition, at the indicated intensity, the specimens of Siberian pine left for cultivation are affected by Pineus cembrae (Cholodovsky, 1988).

scholarly journals Differences in water balance between grassland and forest watersheds using long-term data, derived using the CoupModel

2017 ◽  
Vol 49 (1) ◽  
pp. 72-89 ◽  
Author(s):  
Erik MirHadi Madani ◽  
Per Erik Jansson ◽  
Ian Babelon
Keyword(s):  
Water Balance ◽  
Forest Cover ◽  
Land Use Changes ◽  
Daily Basis ◽  
Discharge Data ◽  
Forest Watersheds ◽  
Set Up ◽  
Similar Good ◽  
The Impact

Abstract To quantify the role of land cover during a period of climate change, the runoff response is studied for Plynlimon in Wales, UK. The main objective was two-fold: (i) to create a protocol for modeling water balance on a daily basis; and (ii) to describe the extent to which the impact of land-use changes can be identified and supported by the long-term monitoring data of runoff from two neighboring watersheds with different land covers. The process-oriented CoupModel platform was used to set up the model with a well-defined uncertainty for selected parameters. The behavioral ensembles were applied to simulated daily discharge data for the period of 1992–2010 using subjective criteria to reduce the prior 35,000 candidates with a random uniform distribution of 40 parameters. The accepted ensemble was reduced to 100 candidates by accepting the best root-mean-square error (RMSE) on the accumulated residuals during the simulation period. Similar good performance for the entire period and both watersheds was obtained. The differences in interception evaporation accounted for the most important differences between forest and grassland. The obtained residual demonstrated that changes in the forest cover had an impact on the water balance during the first part of the simulation period.

scholarly journals Simulation of the Impact of Urban Forest Scale on PM2.5 and PM10 based on System Dynamics

2019 ◽  
Vol 11 (21) ◽  
pp. 5998
Author(s):  
Zhou ◽  
Liu ◽  
Zhou ◽  
Xia
Keyword(s):  
Particulate Matter ◽  
Air Quality ◽  
System Dynamics ◽  
Forest Cover ◽  
Urban Forest ◽  
Ambient Air ◽  
Atmospheric Environment ◽  
Pm2.5 And Pm10 ◽  
The Impact

In the context of ecological civil construction in China, afforestation is highly valued. Planting trees can improve air quality in China's large cities. However, there is a lack of scientific analysis quantifying the impact urban forest scale has on the air quality, and what scale is advisable. The problem still exists of subjective decision-making in afforestation. Similar studies have rarely analyzed the long-term effect research of urban forests on air improvement. Using as an example, the city of Wuhan, this paper identifies the regularity between particulate matter concentration and adsorption of sample leaves, and establishes a system dynamics model of "economy, energy and atmospheric environment.” By combining this regularity with the model, the long-term impact of forest scale on particulate matter and atmospheric environment was simulated. The results show that if the forest coverage rate reaches at least 30%, the annual average concentrations of inhalable particulate matter (PM10) and fine particulate matter (PM2.5) can both reach the Grade I limit of national Ambient Air Quality Standard by 2050. The current forest cover is 22.9% of the administrative area. Increasing the forest cover by 600 km2 would increase this percentage to 30% of the total area. In the long run (by the year 2050), however, we showed that this increase would only reduce the annual concentration of PM2.5 and PM10 by 1–2%. Therefore, about 90% of the concentration reduction would still rely on the traditional emission reduction measures. More other ecological functions of forests should be considered in afforestation plan.

scholarly journals СИБИРЬ ХУШ, СИБИРЬ ГАЦУУРЫН ТАРЬЦ УРГУУЛСАН СУДАЛГААНЫ ДҮН

2014 ◽  
Vol 52 (2) ◽  
pp. 53-61
Author(s):  
Ц. Дашзэвэг ◽  
С. Амартүвшин
Keyword(s):  
Pine Forests ◽  
Stream Line ◽  
Pinus Sibirica ◽  
Picea Obovata ◽  
Below Ground ◽  
Basic Characteristics ◽  
Academy Of Sciences ◽  
Siberian Pine ◽  
First Time ◽  
P 53

DOI: http://dx.doi.org/10.5564/pmas.v52i2.360 Proceedings of the Mongolian Academy of Sciences Vol.52(2) 2012 p.53-61SOME RESULTS OF EXPERIMENT TO RAISE SEEDLING OF PINUS SIBIRICA MAYR. AND PICEA OBOVATA LDB.Abstract: In Mongolia, Picea obovata Ldb. grows along the river basin and stream line in mixture with main species of trees. The area of forest dominated by Picea obovata Ldb. is 31.92 thousand hectare in total, which equals to 0.3% of total forest of the country (excluding Saxsaul forest).Experiment to raise Picea obovata seedling has been conducted in forest-vegetational zone of Western Khentii, first time in Mongolia. Experiment found that the most suitable period Picea obovata seeds are between 25 May and 5 June. This paper also presents agro-technique of raising Picea obovata Ldb. seedlings, linear parameters of above and below ground parts of seedling and biomass.Distribution of Siberian Pine forests (Pinus sibirica, Mayr.), basic characteristics, types and present status of Siberian Pine forests of Mongolia are been given in detail. Research of raising seedlings of Siberian Pine was conducted in Tunkhel area of Mandal soum, Selenge aimag, 2003 onwards, and the agrotechnique of raising seedlings of Siberian Pine is been determined.DOI: http://dx.doi.org/10.5564/pmas.v52i2.360 Proceedings of the Mongolian Academy of Sciences Vol.52(2) 2012 p.53-61

scholarly journals Development of forest cover mask to monitor the health condition of forests in Poland using long-term satellite observations

2016 ◽  
Vol 77 (2) ◽  
pp. 141-150
Author(s):  
Maciej Bartold
Keyword(s):  
Vegetation Index ◽  
Forest Cover ◽  
Normalized Difference Vegetation Index ◽  
Meteorological Data ◽  
Vegetation Indices ◽  
Forest Health ◽  
Remote Sensing Data ◽  
Forest Regions ◽  
The Impact

Abstract The work presented here aims at developing cover mask for monitoring forest health in Poland using remote sensing data. The main objective was to assess the impact of using the mask on forest condition monitoring combined with vegetation indices obtained from long-term satellite data. In this study, a new mask developed from the CORINE Land Cover 2012 (CLC2012) database is presented and its one-kilometer pixel size matched to low-resolution data derived from SPOT VEGETATION satellite registrations. For vegetation mapping, only pixels with a cover ≥ 50% of broad-leaved and mixed forests defined by CLC2012 were taken into account. The masked pixels were used to evaluate spatial variability in eight Natural-Forest Regions (NFRs). The largest coverages by masked forests were obtained in Sudetian (65.7%), Carpathian (65.9%) and Baltic (51.3%) regions. For other forest regions the coverage was observed to be around 30-50%. Time-series of the Normalized Difference Vegetation Index (NDVI) comprising SPOT VEGETATION images from 1998 until 2014 were computed and cross-comparison analyses on ≥ 50% and < 50% forest cover masks brought up frequent differences at a level higher than 0.05 NDVI in seven out of eight NFRs. An exception is the Sudetian region, where the data was highly consistent. Furthermore, the Mann-Whitney U non-parametric test revealed statistically significant differences in two regions: Baltic and Masurian-Podlasie NFR. The comparative analysis of NDVI confirmed that there is a need for additional investigation of the quality of newly developed forest mask combined with vegetation and meteorological data.

scholarly journals Dynamics of Siberian pine (Pinus sibirica) seed production in Novosibirsk region

2020 ◽  
Vol 24 (6) ◽  
pp. 44-50
Author(s):  
O.V. Parkina ◽  
◽  
R.A. Tretyakova ◽  
G.A. Galitskaya ◽  
◽  
...  
Keyword(s):  
Seed Production ◽  
Individual Variability ◽  
Pinus Sibirica ◽  
Hydrothermal Conditions ◽  
Novosibirsk Region ◽  
Analytical Review ◽  
Growing Conditions ◽  
The Individual ◽  
Siberian Pine

The results of an analytical review and evaluation of long-term experimental data on the dynamics of seed-bearing of Siberian pine in the Novosibirsk region at the objects of the forest seed base in the Iskitim forestry are presented. The analysis of the development of the generative part of the cedar depending on the hydrothermal conditions of the years of study and the individual variability of clones. The data obtained indicate that the growing conditions and humidity, as well as the temperature factor affect the periodicity of seed production. The years that differ in the volume of cedar seed harvesting for the period 2009–2017 are highlighted. Years of mass harvests and crop failures need to be investigated to study the causes of periodicity of fruiting and features of the process of pollination, fertilization and development of cones.

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