Ten plots measuring 25 m × 25 m area were selected randomly from each of the different aged plantations and all trees were counted for estimation of tree density.
As they age, plantations become better for biodiversity," Ewers says, especially in comparison with a landscape of intensive soy or maize production in Brazil.
Lampung province, one of the largest coffee- and cocoa-producing areas in the country, has been facing problems such as aging plantations and traditional farming systems.
Although considered by some as a less "ecologically suitable" forestry model than "near-natural" stand management, even-aged plantation forest management, with regeneration procedure involving clearcutting, creates temporary habitat for many early-successional birds.
Age: plantation kauri grow quickly when young (40 60 years) before growth slows once trees pass the 'ricker' phase.
This could be the result of a number of factors, including: 1) Age: plantation kauri grow quickly when young (40 60 years) before growth slows once trees pass the 'ricker' phase.
Generalized models have often been used without consideration of the tree age or plantation age.
For even-age plantations Site Index is defined as the height of dominant trees at a given reference age.
Region Average carbon sequestration rate Degraded forest land 1.1 t ha-1 yr-1 Central Himalayas 3.9 t ha-1 yr-1 Indo-Gangetic plains 8.5-15.2 t.ha-1 yr-1 Strip plantation aged 5.3 yr in Haryana 15.5 t ha-1 during the first rotation Agricultural soils of Indo-Gangetic plains 12.4-22.6 t ha-1 yr-1 Source: Maikhuri et al. (2000).
Among the causes of the reduced yields are the aging of plantations, inadequate attention to the crop, shortage of fuel, shortage of herbicides, reduction of water and other limitations.
This simulation study was designed to examine the consequences of different spatial methods of sampling for mean stem volume when applied to even-aged plantation stands (in the 1 – 30 ha size range).
