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Promoting the seed regeneration potential of secondary forests undergoing gap disturbances is an important approach for achieving forest restoration and sustainable management. Seedling recruitment from seed banks strongly determines the seed regeneration potential, but the process is poorly understood in the gaps of secondary forests. The objectives of the(More)
The storage and distribution of Korean pine seeds on Korean pine forest floor in Changbai Mountain Nature Reserve were investigated, and the data were compared with those in 1970s when the forest was little disturbed. Based on the dependence of natural regeneration of Korean pine on seed predating animals, the effect of commercial cone-picking on natural(More)
A coastal forest planted nearby the sea can provide many shelter benefits for the coastal regions. It is ideally if the continuity of the shelter benefits could be preserved through reasonable management. Thinning and regeneration as the most important management techniques for plantations can help the continuity of the shelter benefits of the coastal(More)
With 16 years old Larix kaempfersoil plantation in the mountainous area of eastern Liaoning Province as test object, this paper studied the effects of fertilization on the fine root diameter, root length, and specific root length (SRL) of the first to fifth order roots. The results showed that with ascending root orders, the mean fine root diameter and root(More)
Forest gaps, openings in the canopy caused by death of one or more trees, have a profound effect on forest regeneration and drive the forest growth cycle. It is therefore necessary to understand the effects of forest gaps on regeneration for modern forest management. In order to provide a quantitative assessment of the effects of forest gaps on regeneration(More)
Conversion of natural forests to plantations often results in a considerable loss of plant species and thus likely a reduction in quantity and quality of plant debris entering the soil. Larch plantation is widespread in northeastern China, but its ecological impacts receive little attention. This study aimed to assess soil quality under larch stands against(More)
Soluble organic nitrogen is considered to reflect the effect of forest types on soil nitrogen status. As a major process affecting the soil-soluble organic nitrogen pool, degradation of insoluble organic nitrogen in the production of soluble organic nitrogen is mediated by a suite of soil enzymes. This study aims to examine soil-soluble organic nitrogen(More)
With three different size gaps (G1, 670 m2; G2, 290 m2; and G3, 90 m2) in eastern Liaoning montane secondary forests of China as test objects, and through a continuous measurement of light intensity, the spatiotemporal distribution of photosynthetic photon flux density (PPFD) in the gaps was compared. The results showed that the diurnal variation of PPFD in(More)
  • Jiaojun Zhu, Zugen Liu
  • 2004
More than 80% of terrestrial ecosystems have been influenced by natural disasters, human activities and the combination of both natural and human disturbances. Forest ecosystem, as one of the most important terrestrial ecosystems, has also been disturbed without exception. Under the disturbance from natural disasters and human activities, particularly from(More)