Qinghai Xu
Biographic Data
| ID | 5647186 |
|---|---|
| NAME | Qinghai Xu |
| GIVEN NAMES | Qinghai |
| FAMILY NAME | Xu |
| SIGNATURE | XU Q |
| AFFILIATIONS | Hebei Normal University |
| ORCID | 0000-0003-2518-3520 |
| VERIFIED | Yes |
| TOTAL WORKS | 41 |
| TOTAL CITATIONS | 69 |
| AUTHOR COUNT | 41 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2004 |
| LATEST PUBLICATION YEAR | 2025 |
| H-INDEX | 5 |
Relative pollen productivity estimates for the dominant plant taxa in the Hoh Xil region of the Qinghai-Tibet Plateau
Vegetational succession and climatic variability in the monsoonal margin over the past three millennia as indicated by pollen influx data from Daihai Lake, Inner Mongolia
Influence of human impacts on modern pollen assemblages and an assessment of their reliability in reconstructing climate in eastern China
Quantitative reconstruction of the vegetation of the Qinhuangdao area, western coast of Bohai Sea, North China, during the Little Ice Age
Relative pollen productivity estimates for alpine meadow in the Qinghai-Tibet Plateau and their potential significance for paleovegetation reconstruction
Relative pollen productivities of major woody plant taxa in deciduous broadleaved forest in the Ziwuling Mountains of the central Chinese Loess Plateau
Quantitative vegetation reconstruction in the Central North China Plain of the last 3000 years based on the Reveals model
Pollen-based temporal-spatial land cover reconstruction in North China for the last 6,000 years
Quantitative Land-Cover Reconstructions for China over the Past 6000 Years
Land cover reconstruction in Northwest China since 6 ka BP
Astronomical forcing of vegetation and climate change during the Late Pliocene–Early Pleistocene of the Nihewan Basin, North China
Cycles of grazing and agricultural activity during the historical period and its relationship with climatic and societal changes in northern China
The arable‐pastoral ecotone in northern China is ecologically fragile and the region has experienced substantial climatic variability, triggering population migrations, and the alternation of subsistence strategies during the historical period. However, the lack of continuous proxy records of arable and grazing activity has hampered our understanding of shifts in subsistence strategies and their relationship with climatic and societal changes. We…
Variation of summer monsoon intensity in the North China Plain and its response to abrupt climatic events during the early-middle Holocene
Representation of modern pollen assemblage to vertical variations of vegetation and climate in the Yadong area, eastern Himalaya
Relative pollen productivity estimates of major plant taxa and relevant source area of pollen in the warm-temperate forest landscape of northern China
Pollen record of precipitation changes during the Younger Dryas and Early Holocene in the North China Plain
The 4.2 ka event and its resulting cultural interruption in the Daihai Lake basin at the East Asian summer monsoon margin
Heterogeneous vegetation sensitivity at local and regional scales
Holocene environmental changes and human activity at the Jijitan site in the Nihewan Basin, China
Knowledge of the relationship between human activities and environmental changes during the Holocene is important for understanding the survival and development of prehistoric humans. Using AMS 14 C dating and pollen and charcoal analysis, we reconstructed the history of environmental changes and human activity during the Holocene at the Jijitan site in the Nihewan Basin. During 13,000–7500 cal. yr BP, the East Asian Summer Monsoon (EASM) gradual…
Biome changes and their inferred climatic drivers in northern and eastern continental Asia at selected times since 40 cal ka bp
Relative pollen productivity estimates for major plant taxa of cultural landscapes in central eastern China
In this study we estimate relative pollen productivity (RPP) for plant taxa characteristic of human-induced vegetation in ancient cultural landscapes of the low mountain ranges of Shandong province in eastern temperate China. RPP estimates are required to achieve pollen-based reconstructions of Holocene plant cover using modelling approaches based on Prentice’s and Sugita’s theoretical background and models (REVEALS and LOVE). Pollen counts in mo…
Vegetation succession and East Asian Summer Monsoon Changes since the last deglaciation inferred from high-resolution pollen record in Gonghai Lake, Shanxi Province, China
A cal. 20-year-resolution pollen record from Gonghai Lake presented the detailed process of mountain vegetation succession and East Asian Summer Monsoon (EASM) changes since the last deglaciation in Shanxi Province, North China. Modern vegetation distribution and lake surface pollen assemblages suggested that the fossil pollen mainly came from local and surrounding vegetation in Gonghai Lake, which reflected the elevational changes of plant commu…
Modern pollen–climate relationships in north Xinjiang, northwestern China
Fossil pollen records are widely used to reconstruct past climate. Such reconstructions require that the relationships between pollen assemblages, vegetation, and climate are well understood. These can be studied in present circumstances given we assume that modern vegetation and climate are analogous to past ones. In this study, we analyze pollen–vegetation–climate relationships in the Jungar desert and Altay Mountains, northwestern China, a reg…
Assessing the Importance of Climate Variables for the Spatial Distribution of Modern Pollen Data in China
To assess the importance of climate variables for the distribution of modern pollen data in China, we present a continental-scale dataset consisting of 1374 samples. Boosted regression trees and constrained ordination techniques are employed to quantify the importance of six climate variables (annual precipitation, PANN; actual/potential evapotranspiration ratio, Alpha; mean annual temperature, TANN; mean temperature of the warmest month, MTWA; m…
East Asian summer monsoon precipitation variability since the last deglaciation
The lack of a precisely-dated, unequivocal climate proxy from northern China, where precipitation variability is traditionally considered as an East Asian summer monsoon (EASM) indicator, impedes our understanding of the behaviour and dynamics of the EASM. Here we present a well-dated, pollen-based, ~20-yr-resolution quantitative precipitation reconstruction (derived using a transfer function) from an alpine lake in North China, which provides fo…
The Alluvial Geoarchaeology of the Sanyangzhuang Site on the Yellow River Floodplain, Henan Province, China
The Sanyangzhuang site, Henan Province, China, has a 12‐m‐deep stratigraphic sequence with remains from the Tang (A.D. 618–907), late Western Han (ca. 140 B.C.–A.D. 23), Warring States (475–221 B.C.), Late Neolithic or Early Bronze Age (ca. 5000–1500 B.C.), Middle Holocene, and Early Holocene times. All of the paleosols are deeply buried. We investigate four issues relevant to the archaeology of the lower Yellow River Valley. First, we confirm th…
New evidence of agricultural activity and environmental change associated with the ancient Loulan kingdom, China, around 1500 years ago
The ancient kingdom of Loulan on China’s Silk Road has disappeared for about 1500 years. Historical records have documented widespread cultivation in Loulan which supported the kingdom’s prosperity for hundreds of years. However, no farmland ruins have been found although the ancient Loulan city was discovered more than 100 years ago. In this study, remotely sensed, geomorphic and geological observations of possible farmlands in Loulan were analy…
Study on stratigraphic age, climate changes and environment background of Houjiayao Site in Nihewan Basin
Pollen-based quantitative reconstruction of the paleoclimate during the formation process of Houjiayao Relic Site in Nihewan Basin of China
Vegetation succession and East Asian Summer Monsoon Changes since the last deglaciation inferred from high-resolution pollen record in Gonghai Lake, Shanxi Province, China
A cal. 20-year-resolution pollen record from Gonghai Lake presented the detailed process of mountain vegetation succession and East Asian Summer Monsoon (EASM) changes since the last deglaciation in Shanxi Province, North China. Modern vegetation distribution and lake surface pollen assemblages suggested that the fossil pollen mainly came from local and surrounding vegetation in Gonghai Lake, which reflected the elevational changes of plant commu…
Relative pollen productivity estimates for major plant taxa of cultural landscapes in central eastern China
In this study we estimate relative pollen productivity (RPP) for plant taxa characteristic of human-induced vegetation in ancient cultural landscapes of the low mountain ranges of Shandong province in eastern temperate China. RPP estimates are required to achieve pollen-based reconstructions of Holocene plant cover using modelling approaches based on Prentice’s and Sugita’s theoretical background and models (REVEALS and LOVE). Pollen counts in mo…
Indicator pollen taxa of human-induced and natural vegetation in Northern China
Research on modern pollen assemblages of human-induced vegetation is conducive to extracting human impact information, and provides basis for determining human impact intensity. The use of 189 surface soil pollen samples from human-induced and natural vegetation shows that there were significant discrepancies of indicator pollen taxa and human impact intensity between different vegetation types in Northern China. The results demonstrate that fore…
Pollen–vegetation–climate relationships in some desert and desert-steppe communities in northern China
In this paper, we consider the relationship between pollen assemblages, vegetation and climate in some desert and desert-steppe areas in northern China using both surface soil samples and pollen trap samples. Discriminant analysis shows that samples originating from different climatic or geographical regions can be separated reliably on the basis of pollen assemblage regardless of sample type. DCCA analysis indicates that surface soil pollen asse…
A transfer-function model developed from an extensive surface-pollen data set in northern China and its potential for palaeoclimate reconstructions
A total of 237 surface soil pollen samples were collected from less disturbed zonal communities, and a new surface pollen data set has been established in northern China. Pollen—climate parameter transfer functions using weighted-averaging regression and calibration partial least squares (WA-PLS) model as a tool to reconstruct past climate changes from pollen data, were tested with this new surface pollen data set. The results of cross-validation…
Biome changes and their inferred climatic drivers in northern and eastern continental Asia at selected times since 40 cal ka bp
Modern pollen assemblages from cultivated rice fields and rice pollen morphology
Pollen from a series of surface soil samples collected along a transect spanning southeast China was investigated to better understand palynological signals of ancient agriculture and other human activity. The transect surface samples consist of pairs taken inside and outside rice paddy fields. Pollen assemblages from these samples are valuable as modern analogs of human-altered environments and rice agriculture. Our measurements of Poaceae polle…
Modern pollen–climate relationships in north Xinjiang, northwestern China
Fossil pollen records are widely used to reconstruct past climate. Such reconstructions require that the relationships between pollen assemblages, vegetation, and climate are well understood. These can be studied in present circumstances given we assume that modern vegetation and climate are analogous to past ones. In this study, we analyze pollen–vegetation–climate relationships in the Jungar desert and Altay Mountains, northwestern China, a reg…
Characteristic pollen source area and vertical pollen dispersal and deposition in a mixed coniferous and deciduous broad-leaved woodland in the Changbai mountains, northeast China
Modern pollen and land-use relationships in the Taihang mountains, Hebei province, northern China—a first step towards quantitative reconstruction of human-induced land cover changes
Holocene vegetation variation in the Daihai Lake region of north-central China
A transfer-function model developed from an extensive surface-pollen data set in northern China and its potential for palaeoclimate reconstructions
A total of 237 surface soil pollen samples were collected from less disturbed zonal communities, and a new surface pollen data set has been established in northern China. Pollen—climate parameter transfer functions using weighted-averaging regression and calibration partial least squares (WA-PLS) model as a tool to reconstruct past climate changes from pollen data, were tested with this new surface pollen data set. The results of cross-validation…
Holocene climate changes in the mid-high-latitude-monsoon margin reflected by the pollen record from Hulun Lake, northeastern Inner Mongolia
Pollen-assemblage data from a sediment core from Hulun Lake in northeastern Inner Mongolia describe the changes in the vegetation and climate of the East Asian monsoon margin during the Holocene. Dry steppe dominated the lake basin from ca. 11,000 to 8000 cal yr BP, suggesting a warm and dry climate. Grasses and birch forests expanded 8000 to 6400 cal yr BP, implying a remarkable increase in the monsoon precipitation. From 6400 to 4400 cal yr BP,…
Palynological and satellite-based Modis observations of modern vegetational gradients in China
Holocene climate change and human impacts implied from the pollen records in Anyang, central China
New evidence of agricultural activity and environmental change associated with the ancient Loulan kingdom, China, around 1500 years ago
The ancient kingdom of Loulan on China’s Silk Road has disappeared for about 1500 years. Historical records have documented widespread cultivation in Loulan which supported the kingdom’s prosperity for hundreds of years. However, no farmland ruins have been found although the ancient Loulan city was discovered more than 100 years ago. In this study, remotely sensed, geomorphic and geological observations of possible farmlands in Loulan were analy…
Pollen–vegetation–climate relationships in some desert and desert-steppe communities in northern China
In this paper, we consider the relationship between pollen assemblages, vegetation and climate in some desert and desert-steppe areas in northern China using both surface soil samples and pollen trap samples. Discriminant analysis shows that samples originating from different climatic or geographical regions can be separated reliably on the basis of pollen assemblage regardless of sample type. DCCA analysis indicates that surface soil pollen asse…
Modern pollen assemblages from cultivated rice fields and rice pollen morphology
Pollen from a series of surface soil samples collected along a transect spanning southeast China was investigated to better understand palynological signals of ancient agriculture and other human activity. The transect surface samples consist of pairs taken inside and outside rice paddy fields. Pollen assemblages from these samples are valuable as modern analogs of human-altered environments and rice agriculture. Our measurements of Poaceae polle…
The Alluvial Geoarchaeology of the Sanyangzhuang Site on the Yellow River Floodplain, Henan Province, China
The Sanyangzhuang site, Henan Province, China, has a 12‐m‐deep stratigraphic sequence with remains from the Tang (A.D. 618–907), late Western Han (ca. 140 B.C.–A.D. 23), Warring States (475–221 B.C.), Late Neolithic or Early Bronze Age (ca. 5000–1500 B.C.), Middle Holocene, and Early Holocene times. All of the paleosols are deeply buried. We investigate four issues relevant to the archaeology of the lower Yellow River Valley. First, we confirm th…
Pollen–climate transfer functions intended for temperate eastern Asia
Modern pollen and land-use relationships in the Taihang mountains, Hebei province, northern China—a first step towards quantitative reconstruction of human-induced land cover changes
Study on stratigraphic age, climate changes and environment background of Houjiayao Site in Nihewan Basin
Assessing the Importance of Climate Variables for the Spatial Distribution of Modern Pollen Data in China
To assess the importance of climate variables for the distribution of modern pollen data in China, we present a continental-scale dataset consisting of 1374 samples. Boosted regression trees and constrained ordination techniques are employed to quantify the importance of six climate variables (annual precipitation, PANN; actual/potential evapotranspiration ratio, Alpha; mean annual temperature, TANN; mean temperature of the warmest month, MTWA; m…
East Asian summer monsoon precipitation variability since the last deglaciation
The lack of a precisely-dated, unequivocal climate proxy from northern China, where precipitation variability is traditionally considered as an East Asian summer monsoon (EASM) indicator, impedes our understanding of the behaviour and dynamics of the EASM. Here we present a well-dated, pollen-based, ~20-yr-resolution quantitative precipitation reconstruction (derived using a transfer function) from an alpine lake in North China, which provides fo…
East Asian summer monsoon precipitation variations in China over the last 9500 years
To better understand the long-term changes of the East Asian summer monsoon precipitation ( P jja ), quantitative reconstructions and model simulations are needed. Here, we develop continental-scale pollen-based transfer functions for P jja with weighted averaging–partial least squares (WA-PLS) regression and a Bayesian multinomial regression method. We apply these transfer functions to a set of fossil pollen data from monsoonal China for quantit…
Indicator pollen taxa of human-induced and natural vegetation in Northern China
Research on modern pollen assemblages of human-induced vegetation is conducive to extracting human impact information, and provides basis for determining human impact intensity. The use of 189 surface soil pollen samples from human-induced and natural vegetation shows that there were significant discrepancies of indicator pollen taxa and human impact intensity between different vegetation types in Northern China. The results demonstrate that fore…
Characteristic pollen source area and vertical pollen dispersal and deposition in a mixed coniferous and deciduous broad-leaved woodland in the Changbai mountains, northeast China
Pollen-based quantitative reconstruction of the paleoclimate during the formation process of Houjiayao Relic Site in Nihewan Basin of China
Vegetation succession and East Asian Summer Monsoon Changes since the last deglaciation inferred from high-resolution pollen record in Gonghai Lake, Shanxi Province, China
A cal. 20-year-resolution pollen record from Gonghai Lake presented the detailed process of mountain vegetation succession and East Asian Summer Monsoon (EASM) changes since the last deglaciation in Shanxi Province, North China. Modern vegetation distribution and lake surface pollen assemblages suggested that the fossil pollen mainly came from local and surrounding vegetation in Gonghai Lake, which reflected the elevational changes of plant commu…
Modern pollen–climate relationships in north Xinjiang, northwestern China
Fossil pollen records are widely used to reconstruct past climate. Such reconstructions require that the relationships between pollen assemblages, vegetation, and climate are well understood. These can be studied in present circumstances given we assume that modern vegetation and climate are analogous to past ones. In this study, we analyze pollen–vegetation–climate relationships in the Jungar desert and Altay Mountains, northwestern China, a reg…
Biome changes and their inferred climatic drivers in northern and eastern continental Asia at selected times since 40 cal ka bp
Relative pollen productivity estimates for major plant taxa of cultural landscapes in central eastern China
In this study we estimate relative pollen productivity (RPP) for plant taxa characteristic of human-induced vegetation in ancient cultural landscapes of the low mountain ranges of Shandong province in eastern temperate China. RPP estimates are required to achieve pollen-based reconstructions of Holocene plant cover using modelling approaches based on Prentice’s and Sugita’s theoretical background and models (REVEALS and LOVE). Pollen counts in mo…
Holocene environmental changes and human activity at the Jijitan site in the Nihewan Basin, China
Knowledge of the relationship between human activities and environmental changes during the Holocene is important for understanding the survival and development of prehistoric humans. Using AMS 14 C dating and pollen and charcoal analysis, we reconstructed the history of environmental changes and human activity during the Holocene at the Jijitan site in the Nihewan Basin. During 13,000–7500 cal. yr BP, the East Asian Summer Monsoon (EASM) gradual…
Pollen record of precipitation changes during the Younger Dryas and Early Holocene in the North China Plain
The 4.2 ka event and its resulting cultural interruption in the Daihai Lake basin at the East Asian summer monsoon margin
Geology and Paleoclimatology Research (39 works) · Geography (36 works) · Pollen (29 works) · Physical geography (28 works) · Ecology (27 works) · Geology (26 works) · Biology (23 works) · Pleistocene-Era Hominins and Archaeology (20 works) · Vegetation (pathology (20 works) · Holocene (17 works)