Beijing Forestry University
Chinese Academy of Forestry
Food and fibre security, environmental degradation and climate change are grand challenges facing humankind. Sustainable management of planted forests to meet the growing global needs and for a greener future is increasingly important to address these challenges. The productivity of planted forests is limited by nutrient availability, which will be more complex with climate change and intensification of planted forest management. To understand the impact on productivity, biodiversity, sustainability and associated ecosystem services, detailed understanding and deion of the current biotic and abiotic controls on ecosystem soil C and nutrient fluxes are needed. To better understand nutrient availability - the quantity of nutrients available for uptake by trees, we must understand carbon and nutrient cycling. It is only when we consider how carbon and nutrient cycles through an entire forest ecosystem that we can judge the impact of forest management operations on long-term productivity under intensification and future climate scenarios. Information on biophysical soil properties, nutrient cycling, forest nutrition and resource use efficiency all have some meaning in terms of productivity, but none should be considered in isolation. Nutrient cycling is essential for maintaining nutrient supply to forest plants and for enhancing forest productivity. Nutrient cycling is also strongly linked to greenhouse gas emissions and thus the global climate change. Nutrient cycling and availability, forest nutrition and resource use can be severely affected by anthropogenic and natural disturbance regimes caused by intensification of planted forest management and climate changes. This session will provide a platform to examine and discuss recent research progress on carbon and nutrient cycling in relation to forest nutrition, resource use efficiency and productivity in planted forest ecosystems and how interactions among them are affected by intensification of planted forest management operations and climate change. It is the intent of this session to examine with particular reference to (1) biotic and abiotic characteristics of nutrient-limited stands under intensification of planted forest management and climate change, (2) the control of nutrient availability and its relationship to carbon and nutrient cycles in an entire forest ecosystem, (3) specific challenges facing forest managers, such as restoring carbon and nutrient levels after harvesting of several rotations, and (4) sustainable forest management options for maintaining long-term soil and forest productivity.