RAINFOR GEM Intensive Plots Manual (pdf) - University of Oxford

ContentsTHE RAINFOR-GEM INTENSIVE CARBON MONITORING PLOTS ......................................................................................................... 1WHAT ARE THE RAINFOR-GEM PROTOCOLS? .............................................................................................................................................. 3WHAT ARE INTENSIVE CARBON MONITORING PLOTS? ...................................................................................................................................... 4WHERE CAN I GET DATA FROM EXISTING PLOTS? .............................................................................................................................................. 5HOW CAN I SET UP A NEW PLOT? .................................................................................................................................................................. 61. SETTING OUT THE PLOT AND THE TREE CENSUS: .......................................................................................................................... 71.1 WHERE TO PLACE A CENSUS PLOT? .......................................................................................................................................................... 71.2 SETTING OUT THE PLOT ......................................................................................................................................................................... 91.3 TAGGING LARGE TREES ....................................................................................................................................................................... 121.4 TAGGING SMALL TREES ....................................................................................................................................................................... 17BOX 1: How to find the Point of Measure (POM). ......................................................................................................................... 18BOX 2: Five unusual trees. ............................................................................................................................................................. 231.5 TREE HEIGHT .................................................................................................................................................................................... 271.6 SKETCH MAP OF THE PLOT ................................................................................................................................................................... 291.7 RECENSUSING ................................................................................................................................................................................... 302. BELOW GROUND MEASUREMENTS ............................................................................................................................................ 312.1 IN-GROWTH CORES ............................................................................................................................................................................ 31BOX 3: How to make an in-growth core ........................................................................................................................................ 352.2 RHIZOTRONS .................................................................................................................................................................................... 37BOX 4: How to make a rhizotron ................................................................................................................................................... 442.3 COARSE ROOTS ................................................................................................................................................................................. 472.4 SOIL PROPERTIES ............................................................................................................................................................................... 483. CO 2 EFFLUX ................................................................................................................................................................................. 493.1 TOTAL SOIL CO 2 EFFLUX ...................................................................................................................................................................... 493.2 STEM CO 2 EFFLUX ............................................................................................................................................................................. 513.3 COMPONENTS OF SOIL CO 2 EFFLUX (THE PARTITIONING EXPERIMENT) ......................................................................................................... 543.4 COARSE WOODY DEBRIS (CWD) CO 2 EFFLUX .......................................................................................................................................... 614. LITTER AND DEBRIS .................................................................................................................................................................... 624.1 GROUND FINE LITTER MASS (LITTER STOCK) ............................................................................................................................................. 624.2 COARSE WOODY DEBRIS (CWD) SURVEY ................................................................................................................................................ 634.3 FINE LITTER FALL (LITTER ACCUMULATION) .............................................................................................................................................. 66Specific Leaf Area (SLA) ................................................................................................................................................................. 675. DENDROMETERS ........................................................................................................................................................................ 706. FOLIAGE (LEAF AREA INDEX, LAI) ................................................................................................................................................ 727. SMALL HERBS (GRASSLAND PROTOCOLS) ................................................................................................................................... 748. WEATHER AND CLIMATE ............................................................................................................................................................ 759. TOPOGRAPHY, TREE MAPS, BOTANICAL DETERMINATION AND WOOD DENSITY ....................................................................... 7810. DATA ENTRY AND SERVER UPLOAD .......................................................................................................................................... 79APPENDIX I: RAINFOR-GEM FIELDWORK CODES FOR TREE CENSUSES ............................................................................................ 81APPENDIX II: HOW TO USE AN EGM-4 INFRA-RED GAS ANALYSER (IRGA) ...................................................................................... 71CO 2 EFFLUX CALCULATIONS ....................................................................................................................................................................... 750