Soil carbon cycling and storage of bioenergy cropping systems across a heterogeneous agroecosystem
نویسندگان
چکیده
............................................................................................................. viii CHAPTER 1: GENERAL INTRODUCTION ...................................................... 1 Dissertation Organization .................................................................................... 2 Literature Cited ................................................................................................... 3 CHAPTER 2: SOIL CARBON STORAGE .......................................................... 5 Introduction ........................................................................................................ 5 Fundamentals of soil organic carbon .................................................................. 6 Soil carbon and the global carbon cycle .............................................................. 7 Soil carbon and climate change ........................................................................... 8 Soil carbon sequestration .................................................................................... 9 Conclusions ........................................................................................................ 11 Literature Cited ................................................................................................... 11 CHAPTER 3: TOPOGRAPHIC AND SOIL INFLUENCES ON ROOT PRODUCTIVITY OF THREE BIOENERGY CROPPING SYSTEMS ................. 17 Introduction ........................................................................................................ 18 Materials and Methods ........................................................................................ 21 Results .............................................................................................................. 26 Discussion ........................................................................................................... 29 Literature Cited ................................................................................................... 35 CHAPTER 4: SOIL AGGREGATION AND CARBON POOLS RESPOND QUICKLY TO CHANGES IN LAND USE AND TILLAGE ACROSS A HETEROGENOUS AGROECOSYSTEM ............................................................... 52
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