Growing poplars for food security
05.08.2010 09:57 "Agro Perspectiva" (Kyiv) —
Around one million people in Siyang County, China, are now benefiting from the capacity of poplar forests to restore marginal flood plains and stabilize the banks of the Yellow, Huai and Yangtze rivers. Large swaths of planted poplar trees now protect fields once ravaged by floods, wind, sandstorms and soil erosion, giving boost to agricultural activities.
«Poplars are very fast-growing and amazingly resilient,» said Jim Carle, Leader of the Forestry Management Team at FAO. «They can grow in many sorts of ways and can easily integrate with other land uses, making them ideal for supporting animal husbandry, agriculture, aquaculture, viticulture and horticulture.»
Some of the services provided by these multi-purpose trees include furnishing material for shelter, shade and dwellings, protecting crops and supplying fodder for livestock, as well as offering viable sources of bio-energy. Poplar is one of the faster growing trees, with production cycles of 5 to 15 years, and has a wide range of end-uses. Increasingly poplars are grown for wood energy production.
By engaging Siyang farmers and smallholders in new income generating activities, the development of wood industries and resulting job creation has contributed to an improvement of the regions overall economic situation and an increase in the per capita income of both its urban and rural residents.
Siyang has long been pointed to as an example of the successful application of the international transfer of germplasm, scientific knowledge and technology. The history of Syiangs cooperative partnership in poplar cultivation dates back to the 1970s, when the county first imported 32 poplar clones from Italy, where centres of excellence in poplar research and development existed. This ongoing activity was facilitated by FAOs International Poplar Commission (IPC).
Covering more than 100,000 hectares of the countys land area, poplars are today Siyangs principal tree species, increasing its tree cover from seven to 47 percent over the last 30 years.
«Because of the scale [of the activity] and because of the fast-growing nature of poplars, it grew to become a very large rural development programme also supporting food security, livelihoods and other land-uses, pushing boundaries beyond what was originally planned,» Carle added.
China is now the worlds biggest poplar growing country, followed by France. The area of planted poplar forests and agroforestry (combining trees and crops or livestock) in China is about 8 million hectares, 30 times greater than the areas under poplar cultivation in France.
Poplar-based smallholder agroforestry has transformed the flood plains of Siyang County into a mosaic of green activity on the landscape. Faster leaf decomposition and biomass growth have created a much more fertile soil on once sandy land, which was not always suitable for cultivation.
«People can now diversify their activities,» said Alberto Del Lungo, a Forestry Officer with FAOs International Poplar Commission. «Because of poplars compatibility with many crops, farmers can now grow wheat and maize and an abundance of horticulture crops. Smallholder farmers, for example, also use the cut stems of poplar for cultivating mushrooms in their greenhouses.»
Poplars also provide wood, fibre and fuelwood for forest industries. Poplar wood is colourless, odourless and tasteless, making it highly suitable for fruit boxes, medical tools, chopsticks, flooring and furniture and manufacturing pulp and paper.
Siyangs wood processing industry today churns out nearly 100 types of products, including fibreboards, plywood, decorative veneer and furniture. At present there are more than 1 200 wood processing enterprises active in the region, employing around 50 000 workers. Siyangs wood processing capacity has recently surpassed 2 million cubic meters per year, with its products being exported to Europe, Africa and Southeast Asia.
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