Mycorrhizal Types Determined the Response of Yield of Woody Bioenergy Crops to Environmental Factors

Abstract

Abstract Fossil energy has been difficult to meet people's demand for energy. To avoid energy shortages, woody bioenergy crops as a renewable energy have become the object of research by many researchers. Also, mycorrhizas play an important role in crop productivity which inevitably affected biomass yield of woody bioenergy crops. Based on a global synthesis of biomass yield of woody bioenergy crops, we described a framework for recognizing responses of biomass yield of bioenergy crops to mycorrhizal types and made comparisons of biomass yield. Our resulted found that the biomass yield of woody bioenergy crops ranked from high to low as ectomycorrhizas (ECM) crops (10.2 ton DM ha− 1 yr− 1) > arbuscular mycorrhizas (AM) + ECM crops (8.8 ton DM ha− 1 yr− 1) > AM crops (8.0 ton DM ha− 1 yr− 1). In addition, we indicated that the climate has the strongest effect on biomass yield in AM and ECM crops, whereas geography had the strongest effect on biomass yield in AM + ECM crops. Also, the response of biomass yield to geographic factors (latitude and elevation) and climatic factors (mean annual temperature (MAT) and mean annual precipitation (MAP) varied among different mycorrhizal and plants types. When AM crops are planted, we can pay more attention to the temperature conditions-warmer location, while ECM crops are planted to choose a place with more precipitation conditions. This study revealed the relationship between mycorrhiza and bioenergy crops. It provided data and theoretical support for the rational explanation of the differences of different woody bioenergy crops and their different responses to global changes and increase production of bioenergy crops.