نتایج جستجو برای: mixed and natural stands

تعداد نتایج: 16917246  

2015
Xiaoli Fu Jianlei Wang Yuebao Di Huimin Wang Eric Gordon Lamb

Variation of total fine-root biomass among types of tree stands has previously been attributed to the characteristics of the stand layers. The effects of the understory vegetation on total fine-root biomass are less well studied. We examined the variation of total fine-root biomass in subtropical tree stands at two sites of Datian and Huitong in China. The two sites have similar humid monsoon c...

The coasts of Imam Khomeini port are one of the most important hot spots of mangrove plantations across Iranian coast of Persian Gulf and Sea of Oman, so this is very important to conserve this valuable ecosystem. For this purpose, 75 individual from 3 populations, keeping the minimum distance of 30 to 50 meters from each other, has been collected and investigated using 15 ISSR markers. This st...

2017
Brigite Botequim Jordi Garcia-Gonzalo Andreia Silva Susete Marques José G. Borges Maria Manuela Oliveira Margarida Tomé

Assessing impacts of management strategies may allow designing more resistant forests to wildfires. Planning-oriented models to predict the effect of stand structure and forest composition on mortality for supporting fire-smart management decisions, and allowing its inclusion in forest management optimization systems were developed. Post-fire mortality was modeled as a function of measurable fo...

Journal: :Forest Ecology and Management 2021

Natural disturbances are key factors in the formation of forest ecosystem structure. Evaluation spatial and temporal extent disturbance regimes is critical for understanding dynamics, structural heterogeneity, biodiversity habitats. Quantifying therefore imperative appropriate management forests protected areas. However, natural have rarely been assessed using dendrochronological methods on a r...

Journal: :Anais da Academia Brasileira de Ciencias 2016
Luís C R Silva Sebastião A Machado Franklin Galvão Afonso Figueiredo

Bracatinga (Mimosa scabrella Bentham) is an important pioneer tree species in Ombrophylous Mixed Forest of Brazil and is widely used as an energy source. In traditional agroforestry systems, regeneration is induced by fire, then pure and dense stands known as bracatinga stands (bracatingais) are formed. In the first year, annual crops are intercalated with the seedlings. At that time the seedli...

2008
Miguel Navascues Brent C. Emerson

15 The endemic pine, Pinus canariensis, forms one of the main forest ecosystems in the 16 Canary Islands. In this archipelago, pine forest is a mosaic of natural stands (remnants 17 of past forest overexploitation) and artificial stands planted from the 1940’s. The 18 genetic makeup of the artificially regenerated forest is of some concern. The use of 19 reproductive material with uncontrolled ...

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