scholarly journals Rainfall partitioning in young clonal plantations Eucalyptus species in a subtropical environment, and implications for water and forest management

Author(s):  
Décio Oscar Cardoso Ferreto ◽  
José Miguel Reichert ◽  
Rosane Barbosa Lopes Cavalcante ◽  
Raghavan Srinivasan
FLORESTA ◽  
2011 ◽  
Vol 41 (2) ◽  
Author(s):  
Israel Luiz de Lima ◽  
José Nivaldo Garcia

O uso de espécies do gênero Eucalyptus, como madeira serrada, já é uma realidade, porém estudos de técnicas silviculturais que podem influenciar no aproveitamento da madeira serrada tornam-se necessários. O presente trabalho teve como objetivo estudar a influência do desbaste e da fertilização na porcentagem de casca e na conicidade de toras de uma população de Eucalyptus grandis W. Hill ex Maiden, aos 21 anos de idade, em Lençóis Paulista/SP. Para tanto, foram analisadas três intensidades de desbastes seletivos (37, 50 e 75%), presença ou ausência de fertilizantes na época de início dos desbastes, e duas classes de DAP (classe 1 para valores entre 25 e 30 e classe 2 para valores entre 30 e 35 cm). As amostras, em forma de toras de 3 m, foram coletadas em duas posições verticais ao longo da altura do fuste comercial (tora 1 de 1,7 a 4,7 e tora 2 de 6,4 a 9,4 m), tratadas de forma independente. A porcentagem de casca foi influenciada pelo desbaste e pela fertilização, porém somente na tora 1. A classe de diâmetro não exerceu nenhum efeito nessa característica da árvore. A conicidade variou somente com a classe de diâmetro, sendo maior nas toras da 2ª classe.Palavra-chave: Manejo florestal; qualidade das toras; características dendrométricas. AbstractEffects of thinning and fertilization onpercentage of bark and log taper of Eucalyptus grandis. Genus Eucalyptus species used as sawn wood is already reality, although it is still necessary more research on silvicultural techniques that may influence sawn wood usage. This research aim to analyze influence of thinning and fertilization on percentage of bark and log taper of a planted population of Eucalyptus grandis W. Hill ex Maiden, 21 years-old, in Lençóis Paulista, SP. It focused three thinning intensities (37, 50 and 75%), presence or absence of fertilizers and two DBH classes (class 1 for values between 25 and 30 and class 2 for values between 30 and 35 cm). Samples of 3 m. long logs had been collected from two vertical positions at the height of tree commercial stem (log 1 from 1.7 to 4.7 and log 2 from 6.4 to 9.4 m), and treated independently. Bark percentage was influenced by thinning intensity and fertilization, but only in log 1. The percentage of bark was influenced by thinning intensity and fertilization but only in log 1. Diameter class did not bring any effect on such tree characteristic. Log tapering varied only accordingly to the diameter class, and it was larger for 2nd class logs.Keywords: Forest management; quality of logs; dendrometric characteristics.


TAPPI Journal ◽  
2012 ◽  
Vol 11 (7) ◽  
pp. 29-35 ◽  
Author(s):  
PETER W. HART ◽  
DALE E. NUTTER

During the last several years, the increasing cost and decreasing availability of mixed southern hardwoods have resulted in financial and production difficulties for southern U.S. mills that use a significant percentage of hardwood kraft pulp. Traditionally, in the United States, hardwoods are not plantation grown because of the growth time required to produce a quality tree suitable for pulping. One potential method of mitigating the cost and supply issues associated with the use of native hardwoods is to grow eucalyptus in plantations for the sole purpose of producing hardwood pulp. However, most of the eucalyptus species used in pulping elsewhere in the world are not capable of surviving in the southern U.S. climate. This study examines the potential of seven different cold-tolerant eucalyptus species to be used as replacements for, or supplements to, mixed southern hardwoods. The laboratory pulping and bleaching aspects of these seven species are discussed, along with pertinent mill operational data. Selected mill trial data also are reviewed.


2019 ◽  
Vol 12 (3) ◽  
pp. 133-166 ◽  
Author(s):  
Alexander Gradel ◽  
Gerelbaatar Sukhbaatar ◽  
Daniel Karthe ◽  
Hoduck Kang

The natural conditions, climate change and socio-economic challenges related to the transformation from a socialistic society towards a market-driven system make the implementation of sustainable land management practices in Mongolia especially complicated. Forests play an important role in land management. In addition to providing resources and ecosystem functions, Mongolian forests protect against land degradation.We conducted a literature review of the status of forest management in Mongolia and lessons learned, with special consideration to halting deforestation and degradation. We grouped our review into seven challenges relevant to developing regionally adapted forest management systems that both safeguard forest health and consider socio-economic needs. In our review, we found that current forest management in Mongolia is not always sustainable, and that some practices lack scientific grounding. An overwhelming number of sources noticed a decrease in forest area and quality during the last decades, although afforestation initiatives are reported to have increased. We found that they have had, with few exceptions, only limited success. During our review, however, we found a number of case studies that presented or proposed promising approaches to (re-)establishing and managing forests. These studies are further supported by a body of literature that examines how forest administration, and local participation can be modified to better support sustainable forestry. Based on our review, we conclude that it is necessary to integrate capacity development and forest research into holistic initiatives. A special focus should be given to the linkages between vegetation cover and the hydrological regime.


2011 ◽  
Author(s):  
Kenneth Skog ◽  
James Howard ◽  
Rebecca Westby
Keyword(s):  

2010 ◽  
Vol 9 (7) ◽  
pp. 929-937 ◽  
Author(s):  
Fatih Sivrikaya ◽  
Emin Zeki Baskent ◽  
Ugur Sevik ◽  
Caner Akgul ◽  
Ali Ihsan Kadiogullari ◽  
...  

2019 ◽  
Vol 10 (1) ◽  
pp. 83-96
Author(s):  
Yohanes Victor Lasi Usbobo

The implementation of todays forest management that based on formal-scientific knowledge and technical knowledge seems to fail to protect the forest from deforestation and the environmental damage. Decolonialisation of western knowledge could give an opportunity to identify and find the knowledge and practices of indigenous people in sustainable forest management. Forest management based on the indigenous knowledge and practices is believed easy to be accepted by the indigenous community due to the knowledge and practice is known and ‘lived’ by them. The Atoni Pah Meto from West Timor has their own customary law in forest management that is knows as Bunuk. In the installation of Bunuk, there is a concencus among the community members to protect and preserve the forest through the vow to the supreme one, the ruler of the earth and the ancestors, thus, bunuk is becoming a le’u (sacred). Thus, the Atoni Meto will not break the bunuk due to the secredness. Adapting the bunuk to the modern forest management in the Atoni Meto areas could be one of the best options in protecting and preserving the forest.


Author(s):  
А. Kh. Chochaev

The article analyzes problems of the Russia forest complex development related to social, environmental and infrastructure issues, the solution of which is impossible without state participation. The reasons of the poor adaptation of the forest complex market economy to long development periods, as well as the environmental consequences of economic activity, including environmental pollution, depletion of natural resources, loss of biodiversity and damage to public health, are considered. The analysis of the forest complex market economy features is made on domestic and foreign examples, a serious shortcoming of which is the isolation of the investment payback process from the chosen economic development direction. Forest rejuvenation in this way leads to a decrease or even loss of the forests biospheric properties to regulate the surface runoff of atmospheric precipitation and the formation of groundwater reserves. It is known, that in the forests of the European part of Russia have been accumulated large reserves of semi-subsistence conifer and hard wood. It is shown that to involve it in use it is necessary to change the principles of annual use calculations and to actually re-develop the regulatory framework for the intermediate use of forest wood resources. Four forest management units in the forest economy of the forest complex were identified: state forest management and implementation of medium-term and long-term planning of all types of work in forests, taking into account materials of the state forest inventory and assessing the state and trends in the development of domestic and foreign timber markets; protection and protection of forests from fires and other adverse natural factors (insects, fungi, pollution); carrying out planned logging with the differentiated use of all types of wood and the organization of reforestation taking into account the diversity of growing conditions and the possibilities of using the lands of the state forest fund of Russia. It is advisable to create economic mechanisms to stimulate the activities of all enterprises and institutions of the Russia forest complex for the transition to new environmentally sound technologies in the forest. A flexible economic mechanism is needed to include forest management costs in the cost of harvested wood in order to restore the ecological, economic, social and cultural properties of forests.


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