WHAT OUR NATION NEEDS MOST AT THE MOMENT

Search This Blog

Saturday, June 18, 2011

Managing growth with forests

from newspaper:
A recent report "Forests in a Green Economy" by the UN Environment Programme examines the critical role of forests and provides policy recommendations for sustainable development and poverty eradication. Excerpts:



Economic progress and human well-being are dependent on healthy forests. Forests serve as carbon sinks and stabilise global climate, regulate water cycles and provide habitats for biodiversity while hosting a wide variety of genetic resources. Economic valuation studies conducted in different countries have demonstrated the important benefits form forests, in particular for climate regulation services and existence values.

The Food and Agriculture Organisation of the United Natons (FAQ) estimated that the forest industry contrirbuted approximately US$ 468 billion or 1 per cent of gobal gross value added to global GDP in 2006. Pulp and paper represented about 40 per cent of this contribution. A review of 54 case studies, over half of which were from Eastern and Southern Africa, estimated that the average annual income from forests

amounted to 22 per cent of  household income.
Forests also provide an essential source of cash, especially during poor harvests. The Centre for International Forestry Research (CIFOR) estimates that families living in and around forests derive an average of one-fifth to one-fourth of their income from forests-based resources.
In many countries, non-timber forest products (NTFPs) contribute prominently to local economies and livelihoods and are important exports. NTFPs include food, plants products, medicine, aromatic products and exudates such as tannin extract and raw lacquer. FAQ (2005) estimated that the value of NTFPs extracted from forests worldwide amounted to US$ 18.5 billion in 2005. It underscored these as lower bound values because of incomplete data.

Forests also provide employment. Although the figures range widely, studies show that more than a billion people depend on forests for incomes and employment. Much of this may be in the informal sector: a recent study by CIFOR on informal timber production in Cameroon estimates that 45,000 people earn their living from such production in the country.
Nutrition for the poor
Globally, forested watersheds, wetlands and mangrove ecosystems provide nutrition to poor households. In addition to sustaining freshwater and coastal fisheries, food sources including NTFPs such as fruits, nuts, honey, and mushrooms are an important source of nutrition. A 2008 review of bush meat affirmed that rural communities in Central Africa obtained a critical portion of their protein and fat from forests.

More than 2 billion people depend on wood energy for cooking, heating and food preservation. According to the International Energy Agency (IEA), in 2005, biomass energy accounted for an estimated 10 per cent of energy use. More than 83 per cent of this is used in less developed countries. In many developing countries biomass accounts for more than 50 per cent of total energy use. Halting tropical deforestation and planting new forests could represent the mitigation potential equivalent of doubling current global nuclear energy capacity or constructing two million new wind turbines. Unfortunately, the values and services that forests render are rarely captured in national accounting systems.

Despite the considerable value of forests, deforestation is rampant. The world's forested area is declining both in absolute terms (deforestation) and in net terms (taking account of forest planting and natural expansion), although at a slower rate than in previous decades. On average, 13 million hectares of tropical forests (an area the size of Greece) are disappearing annually. This is equivalent to approximately six billion tonnes of carbon dioxide being released into the atmosphere, contributing up to one-fifth of global greenhouse gas emissions.
These global trends conceal important regional variations. Over the past decade, forest cover stabilized in North and Central America and expanded in Europe. Forest cover expanded in Asia, mainly due to large-scale afforestation in China, which offset continued deforestation in South-East Asia. Africa and South America experienced the largest net loss of forests during this period.
These figures also mask the loss of natural forests. The general global trend is that natural forests and modified natural forests are decreasing while the planted forest area is increasing. Forty million hectares of natural forests have been lost since 2000. The loss of natural forests implies important and critical losses in biodiversity and decreasing forest ecosystem resilience against climate change.

Today, investments in forests remain low and forest-related activities are predominantly extractive. Over the last two decades, agricultural expansion and timber extraction were the main proximate causes of tropical deforestation.
This pressure is likely to worsen with increasing population, rising incomes and a shift toward meat-based diets. Additionally, market failures increase the likelihood of exploitation without considering the full range of forests goods and services. The Eliasch Review (2008) estimates that the net present value of reduced climate change benefits associated with emission reductions from halving deforestation from 2010 to 2100 is US$ 3.7 trillion on average. It also finds that the average benefit from halving deforestation exceeds average costs by a factor of more than three.
The forest transition theory

A.S. Mather (1992) presents a 'forest transition theory' to explain the growth of planted forests. The study uses on Thunen's rent theory to explain different stages of forest development. It states that as countries develop, forest land is converted to other land uses, agriculture in particular. The process accelerates as infrastructure improvements open up frontier forest areas and make timber extraction and agriculture economically viable. Over time, as timber becomes scarce, off-farm employment opportunities become available. As the economy develops, a series of policy adjustments are made in response to increased profitability of forest management and forest creation. Consequently, the area of forest cover starts to increase again.
Such a transition has been observed in many developed countries and some developing nations. The forest transition theory underscores the central role that informed policy can play in ensuring that forestry services are appropriately valued.
New approaches to plantation
Intensively managed planted forests are highly productive plantations primarily intended to produce wood and fibre. There are around 25 million hectares of intensively managed planted forests worldwide, representing one-quarter of plantation forests and almost 0.2 per cent of the global land area. They generally comprise tropical 'fastwood' plantations of acacia and eucalyptus, as well as temperate conifers.
The New Generation Plantations Project led by WWF collects information and experience from tree plantations in a range of forest landscapes that are compatible with biodiversity conservation and human needs. This project is exploring how forest and plantation management can maintain and enhance ecosystem integrity and forest biodiversity.
New approaches to plantation management can also enhance biodiversity at the stand level. During the 1960s and 1970s, Brazil's Atlantic rainforest, Mata Atlantic, was deforested at an accelerated rate due to logging of valuable tree species for saw milling and subsequently cleared for cattle grazing.
Not for markets
Forests contribute substantially to local, national and global economies. They can contribute to a low-carbon, high-growth, socially inclusive and equitable, adaptive and low scarcity green economy through their multiple functions and improved management. Forests are also a source for low-carbon raw material and energy, and offer a full range of services for many sectors, human well-being, and climate change mitigation and adaptation.
To realise contributions from forests in a green economy, specific enabling conditions are required. Informed policy-makers recognise that forest management cannot be left entirely to markets because these are often imperfect or absent. Consequently, to fully realise benefits of forests in a green economy, governments will need to take an active role.
Governments and the international community need to undertake policy reforms to create incentives to maintain and invest in forests and introduce disincentives to modify market signals and associated rent-seeking behaviour.

No comments:

Post a Comment