scholarly journals Afforestation and secondary succession

2015 ◽  
Vol 75 (4) ◽  
pp. 423-427 ◽  
Author(s):  
Robert Krawczyk

Abstract Secondary succession is a long and complicated natural process returning forests to post agricultural lands, whereas afforestation is an attempt to speed up this process by planting trees. Massive afforestation in the twentieth century brought an increase in forest area in Poland along with management problems in these areas due to disturbances caused by root diseases. Therefore it appears necessary to employ successional processes more fully in order to create sustainable forest ecosystems.

2015 ◽  
Vol 60 (11) ◽  
pp. 54-68
Author(s):  
Marek Jabłoński

The author presents results of study concerning changes of forest area in Polish gminas and powiats in years 2008–2013. It was recognised that changes of forest area cannot be explained by both afforestation and deforestation processes only. It is important in terms of area fluctuations, eg. of private forests is secondary succession forests on abandoned former farmland as well as heterogeneous approach to the recognition of such areas in the register of land and buildings.


Author(s):  
Avinash Panda

It is necessary to utilize a clarifier when the wastewater contains a significant amount of particles that must be filtered out. It works by allowing particles to fall to the bottom of a plate and flow freely past as they settle. Adding polyelectrolyte and coagulant may speed up this natural process of settling. In contrast, coagulants neutralize charges and conglomerate solids into micro-flocs as a result of the polyelectrolyte. Fine filtration, assisted by the use of lamella clarifier settler, or the use of microorganisms, which consume organics as a source of energy, are two common methods of chemical treatment.


Ecology ◽  
2012 ◽  
Author(s):  
David J. Gibson

In the field of ecology, the study of succession enjoys a fairly long history, certainly as long as ecology has been recognized as a discipline. Succession was discussed unofficially as early as the nineteenth century, but the term as we understand it today did not appear until the turn of the twentieth century (see History). Succession remains a core tenet within ecology, although it is sometimes subsumed with the broader discussion of vegetation dynamics. The early view that succession is a deterministic, predictable process has changed as ecologists now better appreciate the hierarchical, nonequilibrial nature of communities and ecosystems. Primary research has moved on from simply describing the patterns of primary and secondary successional change. Today’s debates are dominated by the search for a mechanistic understanding and the application of successional theory for ecosystem management, rehabilitation, and restoration. The readings included in this bibliography on issues related to succession include the history of successional studies, primary and secondary succession, successional theory, and applications.


2017 ◽  
Vol 1 (2) ◽  
Author(s):  
Rozana Eka Putri

Changes in forest ecosystems of brackish water in Indonesia has reached the alarming level. Center for the Study of Marine Fisheries and Bung Hatta University in 2005 mentioned, brackish water forest area in West Sumatra reached 39 832 hectares. Mentawai district has an area of 32,600 hectares of mangrove forests, West Pasaman area of 6273.5 hectares. Results showed that the level of damage is highest in the district of Padang Pariaman, 80 percent or comparable 160 hectares. As in West Pasaman reached 30% and the Mentawai Islands as much as 20%. For the city of Padang, the forest area of brackish water no more than 10 hectares. The forest is only found in the Banana River. Others mostly already built housing or for tourism.


2019 ◽  
Vol 943 (1) ◽  
pp. 146-155
Author(s):  
A.A. Pakina ◽  
N.I. Tulskaya ◽  
A.A. Karnaushenko

The world’s economic welfare is supported by its natural resources. Mapping ecosystem services (ES) is essential to understand how ecosystems contribute to human wellbeing and to support policies, which have an impact on nature. Mapping (ES) is an important tool in their assessment. ES mapping and assessment include ecosystem properties and conditions, ES potential, supply, flow and demand. Approaches to the assessment and mapping the role of Tatarstan’s natural and transformed ecosystems in the carbon dioxide’s balance are presented. The contribution of forest ecosystems to the species’ balance composition and age of forests are estimated. The crop photosynthesis and soils’ respiration are used for agricultural lands. Emissions from industrial production are considered. Fuel combustion and other processes contribute to the balance of carbon dioxide as well. Maps compiled for these purposes prove to be an important tool to assess carbon capacity.


Forests ◽  
2014 ◽  
Vol 5 (11) ◽  
pp. 2658-2678 ◽  
Author(s):  
Mateja Cojzer ◽  
Jurij Diaci ◽  
Robert Brus

2015 ◽  
Vol 5 (1) ◽  
pp. 74-84
Author(s):  
Глушенков ◽  
Oleg Glushenkov ◽  
Перепечина ◽  
Yuliya Perepechina ◽  
Корсиков ◽  
...  

Object of study is forests, newly emerged on agricultural lands due to their withdrawal from agricultural use in the early 90s in the territory of the Bryansk region. Relevance of the work is indicated by absence of any mechanism of account and use of these forests. The analysis of the process of fields overgrowing with woody vegetation, for integrated and sustainable use of emerging plants is made, the technique of their account is proposed. To conduct the study plots of forest renewed in agricultural fields were selected, taking into consideration the composition of adjacent stands. In selected plantations temporary plots were laid, size was determined by number of trees - not less than 300 pieces. Test plots were laid at a distance of 51-100 m from the wall of the forest. Trees were determined by age, height was measured. Scots pine, silver birch and goat willow are the most commonly found species in abandoned fields. By the age of 5 years, pine, willow have a height of 1.1 m, and birch by 6 years – about 2 m. Pine in this situation manifests itself as a pioneer species , but it is inferior to the birch in growth rate. Conducting interpretation of satellite images with resolution of 2.5 m it was found that forest area of 120.6 thousand hectares are unaccounted for in HLB and Gil of the region, which corresponds to the forest area the Oryol region. In accordance with the recommendations of the UN FAO, these forests should be accounted, characteristics should be given and their continued use should be determined. On the basis of these forest areas should be organized in municipal forestry, regulations should be developed and forestries should function. After determine the cutting age in a birch business section (V / 41-50) according to the age of quantitative maturity, after logging, these lands can be reused for agricultural production.


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