Chapter 2 The energy transfer of Ecosystems 生态系统的能量流动1. About energy concept 关于能量的概念2. Where is energy from? 能量的来源3. The trophic structures of ecosystems 生态系统的能量结构4. Ecological Energetics: Energy Dynamics and Storage in Ecosystems 生态系统的能量流动与储存1. About energy concept 关于能量的概念
Energyis what life is all about, and
everything about life is associatedwith energy. Organisms are
accumulations of energy, without a
continuing supply of energy they die, and the energy accumulation is dispersed as their remains decompose. All organisms require a source of energy they must do work, and to do work they must expend energy.
?为什么要研究生态系统的能量流动？??
能量是生态系统的驱动力
林业、农业、渔业、牧业等工作者对森林、农田、渔场、草原等的经营管理，应掌握能量的输入和输出途径及其限制因素，以达到高产目的，设法调整生态系统的能量分配关系，使能量流向对人类最有益的部分。
能量Energy——做功的能力(work)。
calorie或千卡Great calorie。
1)2) 能量值的表示：卡