Questions related to Silviculture
Invasive Insect pests are a threat to the forest whereas silviculture is the art and science of cultivating, caring for, and handling a plant. So how exactly I can join these topics together to build up comprehensive research?
I'm looking for data (mainly related to management: growth rate, canopy size, soil and climate preferences, etc.) about tropical trees used in tropical agroforestry.
Have you ever heard about a database or a source of technical information available to agroforest managers?
That would really facilitate land management and field experiments.
As always, I am trying to use these questions to centralize information from different sources. RG questions tend to be well indexed in Google for different users. Thank you for your contributions!
Most of conservationist advocates total ban on any human interference in natural forests including silvicultural management practices.will by doing so in terms of carbon cycle weheter old tree stands as well as dead trees is increasing carbon storage or decreasing by decomposition. That unused wood if utilised properly for lock carbon in natural furniture or structure will be more useful than laying in the forests. Is there any study which can suggest in decomposition of wood how much and carbon di oxide liberated or added to soil to increase soil carbon along with net gain of carbon after decmposition of wood.
Different silviculture systems were used for harvesting and regeneration of a forest crop. I want to know whether these systems are being practiced in India or other parts of the world.
Within what minimum and maximum values does the (statically significant) correlation between annual growth of the rings and climatic variables (eg: temperature and / or rainfall) vary in beech (Fagus sylvatica) under the European climates?
Aside propagation of plants using both sexual and asexual methods; and factors that affect germination and growth of plants, are there other research areas in silviculture
We review the conceptual framework and underlying assumptions of the major silvicultural practices recommended in Integrated Pest Management Strategies.
Shade tolerance and intolerance plays a significant role while planting trees based on topographical or geographically different areas. In order to spread and promote indigenous species planting, this specific characteristics and its knowledge is very important for forestation and silvicultural aspects.
Teak appears to be a valuable species in tropical silviculture. However, what is the impact of a large scale cultivation of this species on the fertility of tropical soils, which are already acidic and quite poor (in terms of fertility)?
In high value species, the proportion of heartwood is a very important variable to determine the price of wood. Knowing the physiology of heartwood formation , could be posible to device silvicultural treatments and genetic improvement strategies to increase the proportion of ths quality wood,
Quercus leucotrichophora is an important tree species in Himalayn region and widely used for fodder and wood for agricultural implements or directly as pole. Due to over pressure of lopping we rarely find in straight of clean bole good height both in forest and in agricultural fields. Further its wood considered to hard and have interlinked fibers which reduce its wood working. But other parts of Globe Qurecus species are used for timber e. g.Q. alba. Can this tree with improvement programme and good silvicultural practices be grown as good timber to get straight bole knot free logs.
Now all natural forests are manged on conservation approach and so there is no direct benefits are originating for economic gains of country baring few livelihood options for tribals. There is dead trees, unused NWFP forest wealth but law not permit to extract it. Is conservation forestry is just ban everything in natural forests even silvicultural practices of thinning, salvage/ sanitation felling or improvement felling etc. How to regulate the conservation with siviculture of economic and social principles?
I have selected a first generation of individuals from a few parental specimens of Quercus pubescens; they show red crowns in autumn as the parents do. This color seems to be unknown in Q. pubescens. I am looking for any information from anywhere about other individuals and/or groups of Q. pubescens with the same trait. Thank you.
Me gustaría saber si las lianas representan un factor a tener en cuenta en el manejo silvicultural de estos bosques y si hay un protocolo de manejo de lianas en ese sentido. Muchas gracias
your project is connected in interesting topic. In my country we have also problem with management (silviculture, biodiversity, management of stand edges etc.) of small forest stands in intensive agricultural land.
Is it possible to send me more details about mentioned project? We are interested in some kind of cooperation.
The NEBIE plot network is located near the study you are working on. It is designed to determine the effects of intensification of silviculture on productivity, biodiversity, carbon sequestration, etc. NEBIE includes 20 experimental units each is 2 ha is size.
In Forestry Silviculture is an important subject but with focus on conservation forestry in most of the countries silvicultural practices and systems are checked in natural forests. Under plantations we have applied its restricted practices and that to only few tending operation, no thinning and only clear felling system. What are new areas of research in field of Silviculture?
Is the initial planting spacing affects trees differently considering the dominance class (sub-dominant, co-dominant and dominant) in consideration to growth and wood quality in plantation forests? It appears that co-dominant trees may be the most affected and related to the initial spacing, while other two dominance classes may be less related to it. Wondering why that happens, is it due to different levels of competition in various heights of the tree? Is there any literature concerning these questions?
I want to determine the age of old growth monumental coppiced trees-complex (not only the coppices itself) in eastern Macedonia. Note that it has to be an non-invasive technique to the tree. This is due the fact, that the monumental trees are going to be put in value.
I need literature regarding oak wood density and its relation with growth rate. Secondly, how can we calculate a dry biomass and volume of a tree?
PS: Does anyone has published a paper regarding variation in wood density at a different height in hardwoods/ ring porous woods ?
I'm working with a colleague on impacts of intensification of silviculture on lichens. We have pre-, 2nd, 5th and 10th year post-harvest data from 156 two hectare experimental units. We will be offering co-authorship to those willing to share their trait database(s).
I need some literature related to Influence of silvicultural treatments on oak wood density?
waiting for comments
For example SLA (Specific Leaf Area) and biomass allocated to leaves have different responses to light condition at different ages.
In other hand, in smaller trees, SLA decreased by increasing light availability but in bigger ones, it increased by increasing light availability.
Thanks for your helps
It would be interesting to know if the cost of fertilizer is reset at the end of turn for the additional increase wood generated fertilizer. Always assuming that the fertilizer is applied after the last thinning and trees that will be part of clearcutting.
I would be interested to know if after a full cycle of forest plantations of Pinus sp without fertilization, if they could recover the initial level of nutrients (e.g. by atmospheric deposition) or if that level is never recovered.
We know quite a lot about potential impact of climate change on main tree species (e.g. pine, spruce, oak, beech) in central Europe but what about hornbeam? Could anyone write some about the effect of climate change on Carpinus betulus? In Poland we observe that the present climate evolution would be favorable for hornbeam, but would it be long-term? We consider some questions that are really crucial for silvicultural decisions. Have you made any researches/models on impact of climate changes on Carpinus betulus in Europe? If so, I would be grateful to be advised relevant publications.
I want to have information about the of species, plantation area, plantation age as well as hydrological effects of these species in the semiarid and area climate zones.
Periodic occurrences of decline and death of oaks over widespread areas have been recorded since 1900 in all the world. These outbreaks, variously named oak decline, oak dieback, or oak mortality, are caused by a complex interaction of environmental stresses and pests and given the name oak decline.
Please describe the experience in your country.
Are fast growing trees healthier (positive relationship)? Or is there a trade-off between tree growth and health (the to-grow-or-to-defend hypothesis; negative relationship)? It seems to come down to a question of energy acquisition and allocation. Faster growing trees could acquire more resources but if these resources are being allocated to growth there would be less for defence against pests or other stressors. Any references or experience on this topic would be beneficial.
Thank you, Anya.
In Ireland we have an eradication policy but it may be prudent for us to also prepare for the worst case scenario of widespread infection. In those areas infected in Europe, what silvicultural guidelines are being provided for the management of Fraxinus excelsior in the face of ash dieback attributed to Hymenoscyphus pseudoalbidus (often called Chalara dieback)?
About half a century ago a particular provenance of lodge-pole pine was planted extensively, but ultimately, unproductively, are there other examples where species or provenance choice has gone "wrong"? In what way was it wrong? Could the forester have possibly foreseen the danger looming? Could any silvicultural decisions or interventions mitigated these "losses"? Can we ever hope to avoid similar mistakes ourselves?
SEM has been under development for decades in human science, but its application in the field of natural science has not been as widespread.
I'm trying to understand the effect on the backscattering C-Band polarized SAR data of the budding. I have data before, during and after the bud opening of Fagus Sylvatyca and Quercus Robus (L.) on some areas. HH and VV signals don't seem to be affected, but HV does. But it seems that the backscattering of HV goes down despite my intuition. My intuition is, since bud opening is happening, biomass is growing, and in the case of SAR data, volumic backscattering is growing too. And this volumic backscattering plays on HV polarimetric backscattering by growing it. Is that correct? I joined some data with dayly pluviometry. The incidence angle of the first two data is about 20° the 3 lasts are at about 40°. Bottom figure is the bud opening visualisation. Any hints of what's really happening in terms of interaction forest-backscaterring. And moreover, bud opening-backscattering? Thank you very much!
Have you seen any recent publications: such as modification of thinning/ harvesting regimes for the production of a certain NWFP species? Likewise, yield models for tree products (cherries walnuts etc.) any experience? I'd be interested to hear of anything from this growing research field, especially from experiences gained in Europe. Thanks
We observed a high degree of variability in foliar elements among years in mature eastern hemlock (Tsuga canadensis), but a time series of foliar elements in this species is unknown (to my knowledge), so any trends that may exist are difficult to explain. Norway spruce may be the best comparison, and has been extensively studied. If you know of particular manuscripts that show elemental concentrations in Norway spruce needles across years, please send me the references. Thank you.
Can soil fauna be a good indicator to reflect the silvicultural practice and management actions?
The European Environment Agency describes the pollution through nitrogen as one of the main direct causes for habitat and subsequently biodiversity loss. Many studies already showed that also chronic low level nitrogen deposition significantly reduce plant species numbers. My question to the scientific community is: Are there ways of forest management or silvicultural measures to a) reduce atmospheric nitrogen deposition and b) to reduce nitrogen pools in temperate forest ecosystems? Is there a study discussing at least ideas of how to combine soil nutrient sustainability aspects with de-eutrophication measures in temperate forests?
Such sensitive and critical ecosystems are not a good place for trial and error.
The production of vegetables, fruits, flowers and medicinal herbs etc. I understand that they are areas of horticulture.
But are ornamental and medicinal TREES are also part of horticulture?
Wikipedia (http://pt.wikipedia.org/wiki/Horticultura) says so!