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Woodchipping In New Zealand
Woodchipping in New Zealand is one of the sectors of the forestry industry and it attracted controversy in the 1990s when native trees were used as a source for the chipping. Wood chip exports The Ministry of Agriculture and Forestry collates figures on quantities of wood chip exports. :One BDU (bone dry unit) of hardwood chips in roundwood equivalent is 2.25 cubic metres and weighs 1090 kilograms. Controversy Since the settlement of New Zealand by Māori and then by Europeans has seen a loss of 75% of the indigenous forest cover. With European settlement in the 19th century, large areas were cleared for pastoral farming and for logging. The export wood chip industry was the main cause of forest clearance on private land after 1970. By the 1980s, 95% of forest loss was due to wood chipping. The native forests were replanted with faster growing species such as the ''Pinus radiata''. After protests from environmentalists the exporting of wood chips from indigenous forests wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caterpillar D7 Port Chalmers, NZ
Caterpillars ( ) are the larval stage of members of the order Lepidoptera (the insect order comprising butterflies and moths). As with most common names, the application of the word is arbitrary, since the larvae of sawflies (suborder Symphyta) are commonly called caterpillars as well. Both lepidopteran and symphytan larvae have eruciform body shapes. Caterpillars of most species eat plant material ( often leaves), but not all; some (about 1%) eat insects, and some are even cannibalistic. Some feed on other animal products. For example, clothes moths feed on wool, and horn moths feed on the hooves and horns of dead ungulates. Caterpillars are typically voracious feeders and many of them are among the most serious of agricultural pests. In fact, many moth species are best known in their caterpillar stages because of the damage they cause to fruits and other agricultural produce, whereas the moths are obscure and do no direct harm. Conversely, various species of caterpi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Woodchipping
Woodchips are small- to medium-sized pieces of wood formed by cutting or chipping larger pieces of wood such as trees, branches, logging residues, stumps, roots, and wood waste. Woodchips may be used as a biomass solid fuel and are raw material for producing wood pulp. They may also be used as an organic mulch in gardening, landscaping, and ecosystem restoration; in bioreactors for denitrification; and as a substrate for mushroom cultivation. The process of making woodchips is called wood chipping and is done using a wood chipper. The types of woodchips formed following chipping is dependent on the type of wood chipper used and the material from which they are made. Woodchip varieties include: forest chips (from forested areas), wood residue chips (from untreated wood residues, recycled wood and off-cuts), sawing residue chips (from sawmill residues), and short rotation forestry chips (from energy crops). Raw materials The raw materials of woodchips can be pulpwood, waste ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ministry Of Agriculture And Forestry (New Zealand)
The Ministry of Agriculture and Forestry (in Māori, ''Te Manatu Ahuwhenua, Ngāherehere'') was a state sector organisation of New Zealand which dealt with matters relating to agriculture, forestry and biosecurity. It was commonly known by its acronym, "MAF". In April 2012, it became part of the newly formed Ministry for Primary Industries. History The New Zealand Ministry of Agriculture and Forestry was formerly known as the ''Ministry of Agriculture and Fisheries'', but in 1995 responsibilities for fisheries were passed to the newly formed Ministry of Fisheries. However, the government of New Zealand decided that, despite the loss of Fisheries, the newly created ''Ministry of Agriculture'' should continue to be known by the acronym "MAF", and should still use the same logo, because of the high recognition and regard for the name and logo amongst the country's overseas trading partners. In 1998, this Ministry of Agriculture and the Ministry of Forestry merged to become the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Māori People
The Māori (, ) are the indigenous Polynesian people of mainland New Zealand (). Māori originated with settlers from East Polynesia, who arrived in New Zealand in several waves of canoe voyages between roughly 1320 and 1350. Over several centuries in isolation, these settlers developed their own distinctive culture, whose language, mythology, crafts, and performing arts evolved independently from those of other eastern Polynesian cultures. Some early Māori moved to the Chatham Islands, where their descendants became New Zealand's other indigenous Polynesian ethnic group, the Moriori. Initial contact between Māori and Europeans, starting in the 18th century, ranged from beneficial trade to lethal violence; Māori actively adopted many technologies from the newcomers. With the signing of the Treaty of Waitangi in 1840, the two cultures coexisted for a generation. Rising tensions over disputed land sales led to conflict in the 1860s, and massive land confiscations, to which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pinus Radiata
''Pinus radiata'' ( syn. ''Pinus insignis''), the Monterey pine, insignis pine or radiata pine, is a species of pine native to the Central Coast of California and Mexico (Guadalupe Island and Cedros island). It is an evergreen conifer in the family Pinaceae. ''P. radiata'' is a versatile, fast-growing, medium-density softwood, suitable for a wide range of uses. Its silviculture reflects a century of research, observation and practice. It is often considered a model for growers of other plantation species. It is the most widely planted pine in the world, valued for rapid growth and desirable lumber and pulp qualities. Although ''P. radiata'' is extensively cultivated as a plantation timber in many temperate parts of the world, it faces serious threats in its natural range, due to the introduction of pine pitch canker (''Fusarium circinatum''). Description ''P. radiata'' is a coniferous evergreen tree growing to tall in the wild, but up to in cultivation in optimum conditi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Forestry In New Zealand
Forestry in New Zealand has a history starting with European settlement in the 19th century and is now an industry worth seven percent of annual revenue. Much of the original native forest cover was burnt off and logged, however forests have been extensively planted, predominantly with fast-growing cultivars of the Monterey Pine. Wood chips, whole logs, lumber and paper products are exported from New Zealand. Deforestation in New Zealand on public land attracted opposition with protests and environmental groups becoming very active until it ended in 2000. Logging of native forests now only occurs on private land if it is shown to be sustainable. History Milling of New Zealand's extensive native forests was one of the earliest industries in the European settlement of the country. The long, straight hardwood from the kauri was ideal for ship masts and spars. As the new colony was established, timber was the most common building material, and vast areas of native forest were cleared. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Environmental Issues In New Zealand
The environment of New Zealand is characterised by an endemic flora and fauna which has evolved in near isolation from the rest of the world. The main islands of New Zealand span two biomes, Temperate climate, temperate and Subtropical climate, subtropical, complicated by large mountainous areas above the tree line.Walter, H. & Breckle, S-W. (2002). ''Walter's Vegetation of the Earth: The Ecological Systems of the Geo-Biosphere''. New York: Springer-Verlag, p. 86 There are also New Zealand Subantarctic Islands, numerous smaller islands which extend into the subantarctic. The prevailing weather systems bring significantly more rain to the west of the country. New Zealand's territorial waters cover a much larger area than its landmass and extend over the continental shelf and abyssal plateau in the South Pacific Ocean, Tasman Sea and Southern ocean. Historically having an isolated and endemic ecosystem far into modernity, the arrival of Polynesians about 1300 AD and then later Eu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
