Yahoo Search Búsqueda en la Web

Resultado de búsqueda

  1. Hace 4 días · On the other hand, tropical dry and Mediterranean forests, with generally much more geographically restricted species’ ranges, were found to suffer the highest proportion of extirpated species ...

  2. Hace 2 días · The tropical rainforest biome plays a significant role in providing habitats for terrestrial biodiversity and delivering ecosystem service values, contributing to agricultural production. However, the increasing demand for tropical commodities with high economic value threatens this humid ecosystem and its biodiversity. To our knowledge, no studies have systematically mapped the relationship ...

  3. Hace 3 días · 1.Introduction. Tropical forests store about 72% of the global forest biomass carbon (C) (Pan et al., 2011) and account for about one-third of the global net primary productivity (NPP) (Field et al., 1998).As an essential C reservoir in the Earth system, tropical forests maintain critical negative feedback to climate warming by slowing the rate of increasing CO 2 concentration in the atmosphere.

  4. Hace 5 días · However, in temperate and subtropical forests with optimal soil moisture conditions, rainfall can significantly decrease soil respiration rates [56,57]. In addition, when soil moisture is high, short periods of rainfall may saturate or even waterlog the soil.

  5. Hace 4 días · Soil is precious, yet remarkably fragile. ‘Some 18–25 cm of topsoil are all that stand between us and extinction’, observed Luc Gnacadja, Executive Secretary of the United Nations Convention to Combat Desertification, some years ago in a speech which drew a parallel between soil security and human security. Sampling soil at a Chilean ...

  6. Hace 4 días · Land-use change (LUC) is a significant contributor to the increase in atmospheric CO2 concentrations, with previous studies demonstrating its profound impact on soil organic carbon (SOC). The conversion of primary forests to farmland has been recognized as the most significant type of LUC inducing CO2 release from the soil. Therefore, it is critical to understand the impacts of forest LUC on ...

  7. Hace 4 días · Forests constitute important ecosystems in the global carbon cycle. This study investigates how tree species influence soil organic carbon using a global dataset, showing the importance of tree ...