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| 1 | Altitudinal changes of surface pollen and vegetation on the north slope of the Middle Tianshan Mountains,China显示文摘To provide information on vegetation patterns and altitudinal distributions of pollen assemblage in surface soil layers,their complicated relationships in a dryland mountain-basin system in northwestern China and a realistic basis for paleovegetational reconstruction,we investigated 86 vegetation quadrats and analyzed 80 soil samples from the surface soil layers along an altitudinal transect on the north slope of the Middle Tianshan Mountains from alpine cushion vegetation at 3,510 m near glacier to desert vegetation at 460 m in the Gurbantunggut Desert.According to surface pollen assemblages and the results of the detrended correspondence analysis,the transect can be divided into six major altitudinal pollen zones as alpine cushion vegetation,alpine and subalpine meadows,montane Picea forest,forest-steppe ecotone,Artemisia desert and typical desert,which basically reflect the characteristics of the mountainous vegetation patterns on the north slope of the Middle Tianshan Mountains.However,Picea pollen also exists outside the spruce forest,Chenopodiaceae and Artemisia pollen appeared above the elevation of 1,300 m,indicating that most of them might be introduced from lower elevations by upslope winds.Airborne pollen researches from three regions at different elevations further suggest that a high-frequency northwest anabatic wind has a remarkable influence on the transportation and dispersion of surface pollen in the area. | YANG Zhenjing ZHANG Yun REN Haibao YAN Shun KONG Zhaochen MA Keping NI Jian | 2016 | Journal of Arid Land2016，8，5： | 17 |
| 2 | Pollen record and environmental evolution of Caotanhu wetland in Xinjiang since 4550 cal. a BP显示文摘This paper presents a multi-proxy reconstruction of the climate change in Caotanhu wetland using pollen, phytolith and charcoal records, and the data of loss of ignition (LOI), grain size analysis, and susceptibility. Results reveal that between 4550 and 2500 cal. a BP, a dry climatic condition was not favorable for the accumulation of peat. Since 2500 cal. a BP, the climate became humid and the wetland developed with abundant freshwater aquatic plants, which contributed to peat accumulation. Never-theless, alternate periods of rain and dry climate occurred during that period. Between 2500 and 1810 cal. a BP (550 BC―140 AD), the climate was more humid than at present. A lot of emerged plants, such as Phragmites, Typha and Sparganium, and freshwater green algae grew in the wetland which was sur-rounded by desert-steppe vegetation composed mainly of Chenopodiaceae, Artemisia, Compositae and Thalictrum. However, from 1810 to 1160 cal. a BP (140―790 AD), the water level started to decrease and hydrophyte species reduced greatly, but some Phragmites still grew in the wetland and around it was desert vegetation with high proportion of Chenopodiaceae and Artemisia. Then from 1160 to 650 a BP (790―1300 AD), it entered a period of desert-steppe with abundant mesic and xerophytic plants. And a lot of aquatic plants prevailed in the wetland. Here, what is noticeable is that percentages of arboreal pollen, consisting mainly of Betula and Picea, increased greatly and reached a maximal value of 27.2%, in which, Betula percentages rose to 23.2%. Hence, it is reasonable to conclude that Betula grew in the highland of the wetland, or Picea timberline shifted downward resulting in the increase of percentages of Betula and Picea pollen, which were transported into the wetland by flood or wind. But since 650 cal. a BP, desert vegetation prevailed around the wetland again with dominant Chenopodiaceae and Ar-temisia, and the climate was similar to modern one. Despite some aquatic plants still growing in the wetland at that time, their amounts diminished greatly. | ZHANG Yun KONG ZhaoChen NI Jian YAN Shun YANG ZhenJing | 2008 | Chinese Science Bulletin2008，53，7： | 11 |
| 3 | Fluctuation of Picea timberline and paleoenvironment onthe northern slope of Tian-shan Mountains during the late Holocene显示文摘As a good indicator of Holocene climate, the fluctuation of alpine timberline is a synthetical result of impacts of many environmental factors dur-ing geological and historical periods and modern times. As the dominant tree species of mountainous conifer forests on the northern slope of Tianshan Mountains in Xinjiang, the distribution of Picea schrenkiana and its population size are sensitive to climatic change. The typical natural profile of Huashuwozi and the nearby Xiaoxigou archaeologi-cal profile, located in Quanzijie Township, Jimusaer County in Xinjiang, were chosen to analyze and compare the relative high-resolution pollen records, and to measure 14C dating and SEM (scanning elec-tron microscope) microstructure for charcoal frag-ments contained in Xiaoxigou profile’s cultural layers. The results show that in these two profiles, the high percentages of Picea (more than 20% and 35%, re-spectively) appeared in the stratum of the same pe-riod (2000-1300 a BP), which corresponds to the charcoal fragment’s age of Picea schrenkiana con-tained in Xiaoxigou cultural layers. These results convincingly revealed that during the period of 2000-1300 a BP, the timberline for Picea schrenkiana on the northern slope of Tianshan Mountains in Xinjiang declined by about 330m compared with the present. | ZHANG Yun KONG Zhaochen YAN Shun YANG Zhenjing NI Jian | 2006 | Chinese Science Bulletin2006，51，14： | 9 |
| 4 | Palaeoecological and palaeoenvironmental significance of someimportant spores and micro-algae in Quaternary deposits显示文摘Spores of ferns and allied plants, and micro-algae frequently occur in abundance in Quaternary deposits, but their palaeoenvironmental significance is seldom evaluated. This paper presents morphological descriptions of spores of Selaginella sinensis (Desv.) Spring, 1843 (Selaginellaceae) and Ceratopteris cf. thalictroides (L.) Brongniart, 1821 (Parkeriaceae) and the algae Pediastrum boryanum (Turpin) Meneghini, 1840, P. simplex Meyen, 1829, P. integrum N geli, 1849 (all Hydrodictyaceae), Spiniferites Mantell, 1850, emend. Sarjeant, 1970 (Spiniferitaceae) and Concentricystes Rossignal, 1962, emend. Jiabo, 1978 (systematic position unclear), and discusses their occurrence in mostly Quaternary sedimentary successions. All are closely associated with aquatic habitats. Extant Selaginella sinensis often colonizes fairly wet hillsides and gaps between rocks, and shady sides of ravines and slopes; it is also found within thickets of trees and shrubs (boscages) and in forests with calcareous soils. Ceratopteris thalictroides, Pediastrum and Concentricystes inhabit freshwater lakes and both natural and artificial wetlands, such as paddy fields and ditches. Spiniferites is a salt-water genus and usually associated with the marine realm. Fossil and subfossil representatives of all of these taxa can be useful proxies of biodiversity and, therefore, also important for determining environmental conditions during the Quaternary period. | TANG LingYu MAO LiMi Lü XinMiao MA QingFeng ZHOU ZhongZe YANG ChunLei KONG ZhaoChen BATTEN David J | 2013 | Chinese Science Bulletin2013，58，25： | 9 |
| 5 | 亚热带森林植物群落沿海拔梯度的分类与系统发育研究显示文摘生物多样性沿海拔梯度的分布格局已受到广泛关注。然而,生物多样性格局沿海拔梯度的变异及其潜在机制尚不清楚。整合生物多样性的多维度信息为理解群落构建机制提供了新思路。本研究在我国东部亚热带森林沿海拔270-1470 m的梯度上设置了17个木本植物固定样地,分析了沿海拔梯度植物群落构建的生态和进化驱动力。基于样地内物种出现(0-1数据)和多度信息,计算群落内被子植物的物种和系统发育alpha和beta多样性、系统发育结构等,并量化多样性指标与微气候和地形之间的关系。研究发现,不论多度加权与否,物种alpha多样性均沿海拔升高而增加,物种和系统发育的相似性随海拔距离的增加而呈衰减趋势。然而,多度加权与否会形成不同的系统发育alpha多样性格局。对于系统发育结构而言,沿海拔增加并无明显趋势。地形和微气候是多样性格局和系统发育结构的主要驱动力。与未考虑物种多度的多样性指标相比,多度加权的指标与坡度和胸高断面积相关性更高。这些结果表明,由局域物种多度介导的确定性过程对沿海拔梯度的植物群落构建具有一定影响。 | Ran Zhang Zhaochen Zhang Kankan Shang Mingshui Zhao Jiaxin Kong Xin Wang Yuzhuo Wang Houjuan Song Oukai Zhang Xuan Lv Jian Zhang | 2021 | Journal of Plant Ecology2021，14，4： | 2 |
| 6 | Environmental changes and lake level fluctuation recorded by lakes on the plain in northern Xinjiang during the late Holocene显示文摘Xinjiang 自治区域位于干旱区域在那里的 Chinaand 西是关于过去的温度和潮湿的变化的许多争论。大多数在北 Xinjiang 的平原上的湖是封上的湖和终端湖。他们能显然在 palaeoclimate 反映变化。在 northernXinjiang 的一些平凡的湖的 palaeoenvironmental 变化将从西昌·莱克, DongdaohaiziLake 和艾比·莱克主要基于花粉,沉积外形,点火(LOI ) 上的损失,危险性和谷物尺寸的数据在迟了的 Holocene 期间被分析。结果揭示温度和 bycold 湿、温暖干燥的统治的潮湿的一个装配模式。另外,影响因素将被讨论。 | FENG Xiaohua YAN Shun NI Jian KONG Zhaochen YANG Zhenjing | 2006 | Chinese Science Bulletin2006，51，A01： | 2 |
| 7 | Airborne pollen patterns and their relationship with meteorological factors in the Betula microphylla-dominated wetland of Ebinur Lake,Xinjiang,China显示文摘Airborne pollen is indicative of vegetation and climatic conditions.This study investigates airborne pollen trapping in the Betula microphylla-dominated wetland of Ebinur Lake in Northwestern China from September 2012 to August 2015 using Pearson correlation analysis and the Hybrid Single-particle Lagrangian Integrated Trajectory model.Higher temperatures and moderate precipitation during the flowering period facilitated an increase in birch pollen with more exotic spruce pollen carried from the Tianshan Mountains by airflows,leading to the highest arbor pollen concentrations from September 2012 to August 2013.Peak pollen concentrations from September 2013 to August 2014 were possibly due to an increase in herbaceous pollen resulting from higher temperatures,lower precipitation and more exotic pollen from the desert of southwest Ebinur Lake and Central Asia in summer and autumn.Between September 2014 and August 2015,unfavorable climate conditions in summer and autumn decreased the pollen dispersal of xerophytes such as Artemisia and Chenopodiaceae,with little pollen transported from the Kazakh hilly area in late summer,resulting in the lowest pollen concentrations.Climatic parameters and air mass movements both greatly affected the atmospheric pollen concentration.The results provide information concerning the dispersion and distribution of birch pollen,paleoenvironmental reconstruction and wetland conservation. | Lixin CHEN Yun ZHANG Zhaochen KONG | 2021 | Science China Earth Sciences2021，64，10： | 1 |
| 8 | The important climatic fluctuations and events in China during the Holocene Mega thermal显示文摘 | SHI Yafeng KONG Zhaochen WANG Sumin | 1992 | Science in China:Series B1992，22，12： | 1 |
| 9 | New Evidence of “Little Ice Age” Inferred from ^(14)C and Pollen in the Kanas Wetland, Northern Xinjiang显示文摘“Little Ice Age”(LIA)was first introduced by Matthes in 1939 with reference to the phenomenon of cirque glacier regrowth during the Holocene.China is located in the Asian monsoon region,and monsoon circulations on ecological environment have a variety of effects on ecological environment during the LIA.However,existing research has little documented on environmental changes based on pollen during the LIA.A 100-cm-deep section of drilling was collected at the Kanas wetland,northern Altay.By using the data of pollen and^14C,we obtained vegetation types from the study area,which will providenew evidence of“Little Ice Age”in the Altay area. | LI Yumei ZHANG Yun ZHAO Long KONG Zhaochen | 2019 | Acta Geologica Sinica(English Edition)2019，93，1： | 1 |
| 10 | New Biological Records of Paleoecological Changes Inferred from Pollen Since 2500 cal. a B.P. in the Ebinur Lake Area, North Xinjiang显示文摘Objective Betula microphylla Bunge, as a resource treasury of desert biodiversity, is a pioneer plant in saline-alkaline soil amelioration. According to previous research, Ebinur Lake, north Xinjiang, is a representative saltwater lake with 92–131 g/L salinity(Li et al., 2006). | LI Yumei ZHAO Long JIANG Hanchao ZHANG Yun KONG Zhaochen | 2021 | Acta Geologica Sinica(English Edition)2021，95，4： | 0 |
| 11 | Vegetation and environment changes inferred from pollen records since 3000 cal. yr BP in Kanas wetland, Xinjiang显示文摘Aims climate change can significantly affect the vegetation worldwide.thus,paleovegetation and paleoclimate reconstruction should consider the quantitative relationship between modern vegetation and climate.the specific objectives of this study were(i)to assess the influence of environmental variables on pollen assemblages in the Kanas region,(ii)to reconstruct the evolution of vegetation over the past 3000 years using pollen records and(iii)to quantify historical climate change(including mean annual temperature and total annual precipitation)using a weighted averaging partial least squares regression method(WAPLS)applied to fossil pollen data from the Kanas wetland in Xinjiang,china.Methods A total of 65 surface and 50 fossil samples were collected from the Kanas wetland and analysed for 14c,pollen and grain size.By com-bining these data with those obtained from 214 samples of surface pollen assemblages in north Xinjiang,the late Holocene climate was reconstructed using a WAPLS model.Important Findingsthe vegetation in Kanas was dominated by forest for the past 3000 years,undergoing an arbour-vegetation transition from predominantly pine to spruce over that period.the WAPLS model showed that the paleoclimate progressed from cold-wet to warm-dry and subsequently back to cold-wet.Prior to 1350 calibrated years before the present(cal.yr BP),the climate of Kanas was cold and wet,and conditions became increasingly warm and dry until 870 cal.yr BP.the temperature reconstruction model indicated that a‘Little Ice Age’occurred~380 cal.yr BP.these data will help us improve the understanding of abrupt climate change and provide important information regarding the prediction of climate. | Yumei Li Yun Zhang Zhaochen Kong Long Zhao Li Wang Yuanyuan Li Lixin Chen | 2019 | Journal of Plant Ecology2019，12，5： | 0 |
| 12 | Surface pollen and modern vegetation in Southern Xinjiang,China显示文摘The study of modern pollen,and vegetation can improve the accuracy of paleoenvironmental reconstruction based on fossil pollen data.A total of 188 pollen surface samples were collected from Southern Xinjiang(34°00’–43°00’N,74°00’–94°00’E)in China,with an elevation range of 888–4530 m.Surface pollen and vegetation were studied in the northern region of the Kunlun Mountains and the southern region of the Tianshan Mountains.The results showed that the surface pollen assemblages on the southern slope of the Tianshan Mountains(3530–1124 m)were divided into three pollen zones,namely,montane steppe,montane desert steppe,and montane desert.These zones were dominated by Artemisia,Chenopodiaceae,and Ephedra pollen.The surface pollen assemblages in the eastern Pamir Plateau(4530–1287 m)could be divided into alpine meadow,montane desert steppe,and montane desert zones,which were predominantly characterized by Artemisia,Chenopodiaceae,and Asteraceae pollen.However,the Southern Tarim Basin(3548–888 m)comprised montane desert steppe and montane desert zones,which was dominated by Artemisia and Chenopodiaceae pollen.The geographic distribution of the surface pollen sites obtained using ArcGIS,the R-value,and Pearson correlation analyses indicated that the over-represented Picea and Pinus pollen were of external origin and were transported by wind,water(rivers),and ice(glacier movement).Over-representation of Ephedra and Nitraria pollen was mainly distributed in the montane desert and desert steppe zones,respectively.Pollen from Chenopodiaceae and Artemisia were over-represented and broadly distributed across Southern Xinjiang.Juglans pollen was concentrated in areas with walnut trees,strongly indicating the presence of local parent plants.According to the Hybrid Singleparticle Lagrangian Integrated Trajectory model,more Pinus pollen was transported to the Pamir region by external airflows during spring and summer,resulting in its higher surface pollen content.Research elucidating the relationship between modern pollen and vegetation in southern Xinjiang could provide data describing the surface palynological database of Xinjiang for use in large-scale paleoenvironmental reconstructions. | Yun ZHANG Lixin CHEN Yaoyao XI Zhaochen KONG Xianguo QIAO | 2024 | Science China Earth Sciences2024，67，2： | 0 |
| 13 | First Biological Records of Palaeoecology Changes Inferred from Pollen since 4800 cal. a B.P. in Alahake Saline Lake of North Xinjiang显示文摘As the resource treasury of desert biodiversity, thewetland of Betula halophila has fragile ecologic systemand low stability, which causes the sudden reduction ofwetland area. The Alahake Saline Lake is known for anendangered species, Betula halophila. However,palaeoecology changes of the Alahake Saline Lake havebeen little documented. | LI Yumei ZHANG Yun ZHAO Long KONG Zhaochen | 2018 | Acta Geologica Sinica(English Edition)2018，92，3： | 0 |
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