Vegetation and climate change in eastern continental Asia during the last 22 ka inferred from pollen data synthesis:
Gespeichert in:
| 1. Verfasser: | |
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| Format: | Abschlussarbeit Buch |
| Sprache: | English |
| Veröffentlicht: |
2014
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| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | XVI, 156 S. graph. Darst., Kt. |
Internformat
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Datensatz im Suchindex
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| adam_text | TABLE OF CONTENTS
TABLE OF CONTENTS ILL
ACKNOWLEDGEMENTS VII
ABSTRACT IX
ZUSAMMENFASSUNG XI
LIST OF FIGURE XIII
LIST OF TABLES XV
1 INTRODUCTION 1
PREFACE 1
1.1 SCIENTIFIC BACKGROUND, OPEN QUESTIONS AND OBJECTIVES 2
1.1.1 THE COMPLEX CLIMATE SYSTEMS AND VEGETATION IN EASTERN CONTINENTAL
ASIA 2
1.1.2 ASIAN SUMMER MONSOON EVOLUTION IN THE HOLOCENE 3
1.1.3 CHANGES IN THE SPATIAL DISTRIBUTION OF VEGETATION ON A
GLACIAL-INTERGLACIAL TIME
SCALE 4
1.1.4 QUANTITATIVE CLIMATE AND VEGETATION RECONSTRUCTIONS USING POLLEN
DATA AND THE
POTENTIAL FOR METHODOLOGICAL IMPROVEMENTS 5
1.2 STRUCTURE OF THE THESIS 6
1.2.1 OVERVIEW OF THE CHAPTERS
6
1.2.2 AUTHOR S CONTRIBUTIONS 9
1.2.3 METHODS 9
2 MANUSCRIPT 1: A MODERN POLLEN-CLIMATE DATASET FROM CHINA AND MONGOLIA:
ASSESSING ITS
POTENTIAL FOR CLIMATE RECONSTRUCTION 11
ABSTRACT 11
2.1 INTRODUCTION 12
2.2 STUDY AREA 13
2.3 MATERIALS AND METHODS 13
2.3.1 MODERN POLLEN DATA COLLECTION AND PROCESSING 13
2.3.2 MODERN CLIMATIC VARIABLES 14
2.3.3 NUMERICAL ANALYSES 15
2.4 RESULTS 16
2.4.1 MODERN POLLEN ASSEMBLAGES 16
2.4.2 ORDINATIONS 17
2.4.3 POLLEN-CLIMATE RESPONSE MODELS 18
2.4.4 SET-UP AND PERFORMANCE OF MODERN POLLEN-CLIMATE TRANSFER FUNCTIONS
20
2.4.5 SPATIAL AND ENVIRONMENTAL AUTOCORRELATION IN TRANSFER FUNCTIONS 21
2.4.6 EFFECT OF POLLEN DEPOSITIONAL ENVIRONMENT ON TRANSFER-FUNCTION
PERFORMANCE 21
2.5 DISCUSSION 22
2.5.1 ASSESSMENT OF THE MODERN POLLEN DATASET 22
2.5.2 ASSESSMENT OF THE POLLEN-CLIMATE TRANSFER FUNCTIONS 23
2.5.3 COMPARISON OFWA-PLS MODEL PERFORMANCE WITH PREVIOUS STUDIES 24
2.6 CONCLUSIONS 25
ACKNOWLEDGEMENTS 25
III
HTTP://D-NB.INFO/1070689068
SUPPLEMENTARY 26
3 MANUSCRIPT 2: A LATE QUATERNARY POLLEN DATASET FROM EASTERN
CONTINENTAL ASIA FOR VEGETATION
AND CLIMATE RECONSTRUCTIONS: SET UP AND EVALUATION 31
ABSTRACT 31
3.1 INTRODUCTION 32
3.2 POLLEN DATA COLLECTION 33
3.3 POLLEN DATA PROCESSING 41
3.4 POLLEN DATASET 49
3.5 DISCUSSION 50
3.5.1 QUALITY OF THE FOSSIL POLLEN DATASET 50
3.5.2 POTENTIAL USES OF THE FOSSIL POLLEN DATASET 54
3.6 CONCLUSIONS 56
ACKNOWLEDGEMENTS 56
4 MANUSCRIPT 3: SPATIAL AND TEMPORAL DISTRIBUTIONS OF MAJOR TREE TAXA IN
EASTERN CONTINENTAL ASIA
DURING THE LAST 22,000 YR .....59
ABSTRACT 59
4.1 INTRODUCTION 60 .
4.2 REGIONAL SETTING 60
4.3 DATA AND METHODS 62
4.4 RESULTS 63
4.4.1 THERMOPHILOUS BROADLEAVED TREE TAXA 63
4.4.2 EURYTHERMAL BROADLEAVED TREE TAXA 64
4.4.3 COLD-RESISTANT BROADLEAVED TREE TAXA 70
4.4.4 CONIFER TAXA 70
4.5 DISCUSSION 71
4.5.1 TREE TAXA DISTRIBUTION AND ABUNDANCE CHANGES IN SPACE AND TIME AND
THEIR DRIVING
FORCES 71
4.5.2 COMPARISON OF DISTRIBUTION CHANGE OF TREES BETWEEN DIFFERENT
CONTINENTS 73
4.5.3 IMPLICATIONS FOR TREE-RANGE CHANGES IN THE FRAME OF GLOBAL WARMING
75
4.6 CONCLUSIONS 75
ACKNOWLEDGEMENTS 75
5 MANUSCRIPT 4: ASYNCHRONOUS PRECIPITATION EVOLUTION IN EASTERN
CONTINENTAL ASIA DURING THE
HOLOCENE AS INDICATED FROM A POLLEN-BASED QUANTITATIVE RECONSTRUCTION 77
ABSTRACT 77
5.1 INTRODUCTION 78
5.2 STUDY AREA 79
5.3 DATA AND METHODS 79
5.3.1 POLLEN DATASETS 79
5.3.2 METHODS 83
5.4 RESULTS 84
5.4.1 RELIABILITY OF THE RECONSTRUCTIONS 84
5.4.2 P
AM
, TRENDS ACROSS DIFFERENT REGIONS 84
5.4.3 FUZZY C-MEANS CLUSTERING 86
5.5 DISCUSSION 87
IV
5.5.1 ASSESSMENT OF QUANTITATIVE RECONSTRUCTIONS 87
5.5.2 COMPARISON BETWEEN P
ARM
SPATIAL PATTERN AND PREVIOUS NON-POLLEN RECORDS 88
5.5.3 POTENTIAL REASON FOR THE P
AM
, SPATIAL PATTERN IN EASTERN CHINA 89
5.6 CONCLUSIONS 91
ACKNOWLEDGEMENTS 91
SUPPLEMENTARY 92
6 SYNTHESIS 93
6.1 EVOLUTION OF THE EAST ASIAN SUMMER MONSOON DURING THE HOLOCENE.....
93
6.2 CLIMATIC DETERMINANTS OF ECOSYSTEMS IN EASTERN CONTINENTAL ASIA 94
6.3 SPATIO-TEMPORAL CHANGES OF MAJOR TREE TAXA AND THEIR DRIVING FORCES
95
6.4 METHODS FOR IMPROVING THE RELIABILITY OF QUANTITATIVE POLLEN-BASED
PAST ENVIRONMENTAL
RECONSTRUCTIONS = 96
6.4 FUTURE OUTLOOK 96
7 APPENDIX 1 CITATIONS FOR POLLEN RECORDS INCLUDED IN THIS FOSSIL POLLEN
DATASET (MANUSCRIPT 2)
99
8 APPENDIX 2 REPRESENTATIONS OF MAJOR ARBOREAL POLLEN TAXA TO PLANT TAXA
ON A BROAD SCALE IN
CHINA: POLLEN PERCENTAGE THRESHOLD VALUES 115
8.1 OPEN QUESTION AND OBJECTIVE 115
8.2 DATA AND METHODS 115
8 2.1 MODERN POLLEN DATA 115
8.2.2 MODERN TREE TAXA DISTRIBUTION DATA 116
8.2.3 ANALYSES AND MAPPING METHODS 117
8.3 RESULTS 117
8.4 DISCUSSION 121
SUMMARY 126
9 APPENDIX 3 SELECTION OF A ROBUST POLLEN-CLIMATE CALIBRATION SET FROM A
CONTINENTAL-SCALE
DATASET FOR EACH SINGLE POLLEN RECORD 127
9.1 OPEN QUESTIONS AND OBJECTIVES 127
9.2 DATA AND METHODS 128
9.2.1 POLLEN DATA 128
9.2.2 METHODS 128
9.3. RESULTS AND DISCUSSION 129
9.3.1 GANHAI LAKE 129
9.3 2 QINGHAI LAKE 131
9.3.3 DAHU LAKE 133
9.4. SUMMARY 135
REFERENCES 137
V
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| spelling | Cao, Xianyong Verfasser (DE-588)1070606731 aut Vegetation and climate change in eastern continental Asia during the last 22 ka inferred from pollen data synthesis von Xianyong Cao 2014 XVI, 156 S. graph. Darst., Kt. txt rdacontent n rdamedia nc rdacarrier Potsdam, Univ., Diss., 2014 Mit einer Zssfassung in dt. Sprache Klimaänderung (DE-588)4164199-1 gnd rswk-swf Pollenanalyse (DE-588)4046629-2 gnd rswk-swf Vegetationsentwicklung (DE-588)4187459-6 gnd rswk-swf Ostasien (DE-588)4075727-4 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Ostasien (DE-588)4075727-4 g Pollenanalyse (DE-588)4046629-2 s Vegetationsentwicklung (DE-588)4187459-6 s Klimaänderung (DE-588)4164199-1 s DE-604 DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=027993688&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Cao, Xianyong Vegetation and climate change in eastern continental Asia during the last 22 ka inferred from pollen data synthesis Klimaänderung (DE-588)4164199-1 gnd Pollenanalyse (DE-588)4046629-2 gnd Vegetationsentwicklung (DE-588)4187459-6 gnd |
| subject_GND | (DE-588)4164199-1 (DE-588)4046629-2 (DE-588)4187459-6 (DE-588)4075727-4 (DE-588)4113937-9 |
| title | Vegetation and climate change in eastern continental Asia during the last 22 ka inferred from pollen data synthesis |
| title_auth | Vegetation and climate change in eastern continental Asia during the last 22 ka inferred from pollen data synthesis |
| title_exact_search | Vegetation and climate change in eastern continental Asia during the last 22 ka inferred from pollen data synthesis |
| title_full | Vegetation and climate change in eastern continental Asia during the last 22 ka inferred from pollen data synthesis von Xianyong Cao |
| title_fullStr | Vegetation and climate change in eastern continental Asia during the last 22 ka inferred from pollen data synthesis von Xianyong Cao |
| title_full_unstemmed | Vegetation and climate change in eastern continental Asia during the last 22 ka inferred from pollen data synthesis von Xianyong Cao |
| title_short | Vegetation and climate change in eastern continental Asia during the last 22 ka inferred from pollen data synthesis |
| title_sort | vegetation and climate change in eastern continental asia during the last 22 ka inferred from pollen data synthesis |
| topic | Klimaänderung (DE-588)4164199-1 gnd Pollenanalyse (DE-588)4046629-2 gnd Vegetationsentwicklung (DE-588)4187459-6 gnd |
| topic_facet | Klimaänderung Pollenanalyse Vegetationsentwicklung Ostasien Hochschulschrift |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=027993688&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
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