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| 1 | 光学显微镜下松柏类和菊科花粉的分类、鉴定要点及生态意义显示文摘本文对地层中广泛分布的松柏类和菊科花粉进行初步分类,讨论各类型(属)的鉴定特征及生态意义。以气囊的有无、外壁结构和纹饰、气囊的形态和纹饰、本体与气囊过渡点的特征、帽与帽缘纹理等为鉴定要点,对杉型、柏科型、刺柏型、红豆杉型、落叶松属、铁杉属、罗汉松属、云杉属、雪松属、冷杉属、油杉属和松属(双束松型和单束松型)13个类型的松柏类植物花粉逐步分类。通过总结前人研究和统计分析,讨论落叶松属、铁杉属、罗汉松属、云杉属、雪松属、冷杉属、油杉属和松属,特别是双束松型和单束松型花粉的生态环境指代意义。依据花粉的大小、外壁表面纹饰、外壁光切面中基柱层的结构和发育程度,初步拟将菊科花粉划分为6个类型,即菊苣-蒲公英型、紫菀型、春黄菊型、风毛菊型、蓝刺头型和蒿属,并通过对6个花粉类型植物母体生态环境的归纳总结和统计分析,讨论它们的生态环境指代意义。 | 马玉贞 蒙红卫 桑艳礼 孙爱芝 伍婧 王维 | 2009 | 古生物学报2009，48，2： | 16 |
| 2 | An 8.1Ma calcite record of Asian summer monsoon evolution on the Chinese central Loess Plateau显示文摘Carbonates in loess-red clay sequences consist mainly of calcite and dolomite. The EDTA analysis of carbonates in different size fractions and magnetic susceptibility reveal that calcite is a sensitive index of summer monsoon. The chemical analysis of carbonates and calcite from an 8.1 Ma loess-red clay sequence at Chaona on the Chinese central Loess Plateau shows that the evolution of the Asian summer monsoon experienced four stages, namely 8.1―5.5 Ma, 5.5―2.8 Ma, 2.8―1.5 Ma and 1.5―0 Ma, with increasing intensification and fluctuation, suggesting a possible combining impacts of uplift of the Tibetan Plateau and global changes on the Asian summer monsoon. | CHEN XiuLing FANG XiaoMin AN ZhiSheng HAN WenXia WANG Xin BAI Yan HONG Ye | 2007 | Science China Earth Sciences2007，50，3： | 16 |
| 3 | 陕西定边地区2400cal.aB.P.以来高分辨率的花粉记录及环境变化显示文摘通过对位于黄土/沙漠过渡带定边地区苟池剖面的高分辨率的花粉分析,基于9个 ^(14)C年代数据重建了2400cal.aB.P.以来定边的植被与气候变化,结果表明2400~1 740cal.aB.P.地带性植被为以栎为主的森林草原,气候较温暖湿润;1740~1610cal.aB.P.森林退化,草原发育,气候变干;1610~1240cal.aB.P.乔水成分增加,植被类型为疏林草原,气候较温和湿润;1240~1010cal.aB.P.森林退缩,草原发育,气候变干;1010~690ca1.aB.P.草原进一步发育,气候干旱;690~500cal.aB.P.阔叶树成分增加,气候略温湿;500~190cal.aB.P.草原发育,气候干旱;190~Ocal.aB.P.乔木成分增加,气候变湿。本区花粉记录的植被和气候变化可与区域的世纪初前后(秦汉)暖期、隋唐暖期、中世纪暖期和小冰期等事件对比。 | 蒙红卫 马玉贞 王维 桑艳礼 | 2009 | 第四纪研究2009，29，5： | 15 |
| 4 | Pollen evidence from Baode of the northern Loess Plateau of China and strong East Asian summer monsoons during the Early Pliocene显示文摘The red clay eolian sequence on the Chinese Loess Plateau (CLP) is an important archive for paleoclimate change from the late Miocene to Pliocene,and can provide significant information for the controversial problems of East Asian monsoon evolution and its forcing mechanism.In this study,we present a pollen record from Baode,northern CLP.The record shows four stages of paleoecological evolution.From 5.6-4.4 Ma,a forest steppe ecosystem developed under an extremely warm period with high seasonal precipitation.Since 4.4 Ma,a drier episode occurred,which prompted parkland landscapes to develop.During 3.5-3.05 Ma,the environment changed to a rather open steppe ecosystem with a much cooler and drier climate.After 3.05 Ma,the vegetation evolved to forest steppe.Using the percentages of arboreal plants to mirror precipitation,and comparing with other published pollen data from the CLP,we find the existence of S-N directionality of the precipitation change and high percentage of arboreal plants in the entire CLP during the Early Pliocene,which suggest the CLP was characterized by a strong East Asian summer monsoon.The strong summer monsoon corresponds well to the low global ice volume,which may illuminate global climate mechanism for the summer monsoon evolution in the early Pliocene. | LI XingRu FANG XiaoMin WU FuLi MIAO YunFa | 2011 | Chinese Science Bulletin2011，56，1： | 7 |
| 5 | A New Material of Lindera (Lauraceae) of the Late Pliocene from Tengchong, Yunnan and the Genus' Biogeography Significance显示文摘Lindera is a large genus of graceful, pleasantly scented and common native trees and shrubs of southern China and neighboring regions of SE Asia. There is a well-documented Cenozoic fossil record not only in these regions but also from elsewhere. A new fossil leaf record has been found in diatomite beds from the Upper Pliocene Mangbang Formation of Tuantian, Tengchong County, Yunnan. The leaves are identified and assigned to Lindera acuminatissima K. Q. Dao et B. N. Sun sp. nov., by comparing their leaf architecture and epidermal characteristics with those of 51 extant Lauraceae species and with 15 known fossil Lindera taxa. The specimens have well-preserved cuticles, with typical leaf architecture and epidermal characteristics of the Lauraceae, including entire leaf margin, intramarginal veins, basal ternate acrodromous primary veins, one-cell trichome base, paracytic stomatal apparatus, sunken guard cells, subsidiary hardly staining cells and presence of oil cells. These characteristics are consistent with Lindera sect. Daphnidium but are different from reported fossil and extant species of Lindera. The cuticles of Lindera are fragile and delicate with only three Lindera fossils reported based on this tissue. In terms of paleobiogeography, the fossil record indicates that Lindera is distributed in high- to mid-latitude regions of the Late Cretaceous to Paleocene northern hemisphere. Coincidentally, the records of Lindera located on both sides of the Bering Land Bridge possibly support the hypothesis that ancient plants extended via transcontinental exchanges through the Bering Corridor. In the Eocene, ancient Lindera spread to Europe through the Northern Degeer Route and the Southern Thulian Route. At the same time, ancient Lindera spread into Central Asia. Climatic changes and tectonization since the Neogene prevented the propagation of Lindera throughout Asia, North America and Europe, and hence the distribution areas have just regressed to the low-latitude regions in Asia and North America. From the Paleogene to the Neogene, Lindera has changed its distribution by surviving extreme climate changes. Quaternary glaciations ultimately led to Lindera becoming extinct in Europe. The new record from Tengchong, Yunnan, with its lower latitude located in tropical and subtropical regions, indicates that Lindera has lived in those regions since the late Pliocene. | DAO Kequn CHEN Junlin JIN Peihong DONG Chong YANG Yi XU Xiaohui WU Jingyu XIE Sanping LIN Zhicheng SUN Bainian | 2013 | Acta Geologica Sinica(English Edition)2013，87，3： | 4 |
| 6 | 青藏高原东北缘武山盆地中中新世炭屑记录及其古气候意义显示文摘火是生态系统中的重要因子,是反映古气候和环境变化的重要标志。因此,重建火活动历史可以帮助我们理解过去的气候变化和火活动的机制,但是目前在全球范围内十分缺少对中新世时期高分辨率的火活动记录的研究。炭屑已被证明是重建火活动历史的有效替代性指标,基于青藏高原东北缘武山盆地中中新世时期高分辨率的炭屑记录,重建了研究区天然火活动历史,结合现有资料,探讨了火-植被-气候之间的关系以及研究区火活动对全球变化的响应。结果表明:(1)15.30~13.60 Ma时期,炭屑总浓度变化范围为59~4324粒·g^(-1),平均浓度为835粒·g^(-1)。炭屑形状以次圆形为主,且几乎所有的炭屑粒径都小于50μm,反映出研究区天然火活动是以乔木植物燃烧的森林火活动为主,主要是区域性火活动。根据炭屑总浓度的变化趋势,将研究区天然火活动历史分为2个主要阶段。阶段Ⅰ(15.30~14.00 Ma):炭屑总浓度逐步增加,平均浓度为866粒·g^(-1)。其中,阶段Ⅰ又可以细分为3个次要阶段,Ⅰa(15.30~14.38 Ma):炭屑总浓度最低,平均浓度为693粒·g^(-1);Ⅰb(14.38~14.20 Ma):炭屑总浓度快速减少,平均浓度为1140粒·g^(-1);Ⅰc(14.20~14.00 Ma):炭屑总浓度急剧增加,平均浓度为988粒·g^(-1)。阶段Ⅱ(14.00~13.60 Ma):炭屑总浓度急剧减少,平均浓度为777粒·g^(-1)。(2)孢粉数据重建的研究区的植被和气候变化结果表明,15.30~14.38 Ma时期为开阔的森林植被,湿度较低;14.38~14.00 Ma时期乔木增加,湿度增加;14.00~13.60 Ma时期乔木属种显著减少,湿度降低。(3)经过对比分析,炭屑总浓度变化趋势与乔木类花粉百分比趋势相近,次圆形炭屑浓度趋势与阔叶类植物花粉的百分比趋势显著正相关,认为武山盆地中中新世的天然火活动与森林植被的盖度(尤其是阔叶林的盖度)有较强联系,在气候温暖湿润的时期,炭屑浓度高。此外,通过对比炭屑总浓度趋势和深海底栖有孔虫氧同位素的变化,可以推测,全球温度变化可能通过影响研究区植被变化来对天然火活动产生重要影响。 | 周学文 魏晓 陈鹏 石天宇 惠争闯 | 2022 | 干旱区地理2022，45，3： | 0 |
| 7 | The late Pliocene species with ternate venation of Lauraceae from Tuantian flora, Tengchong, Yunnan Province, China显示文摘A number of fossil leaves of the Lauraceae were collected from Tuantian flora of the late Pliocene strata in Yunnan, China. They have a whole leaf shape and well-preserved cuticles. In this paper, features of the architecture and epidermis of three species of the Lauraceae family with ternate venation are reported. Results of the comparison between the venation characteristics of Lauraceae fossils from four fossil floras in the world and those of extant Lauraceae in China suggest that the proportion of Lauraceae species with ternate venation is increasing. The proportion has risen from 10% in the Eocene to 12.5% in the late Pliocene in China, whereas the proportion in the modern era is 21%. Moreover, the proportion of Australian floras with ternate venation has rised from 8.3% to 10% between the Eocene and the Miocene. Because of the effect of the global drought during the Cenozoic era, we suggested that species with ternate venation in Lauraceae have become increasingly prevalent between the Eocene era and the present day in China. Data on Nerriga flora and Maarlake flora since the Eocene era in the Southern Hemisphere show the same trend. While features of the leaf architecture and epidermis of Lindera acuminatissima differ in details. They all have similar identification characteristics with regard to basal eucamptodromous venation, interior 2° present, minor 2° simple brochidodromous, anticlinal walls, no surface ornamentation, lip-like guard cells, outer stomatal ledge plain or dimness, and paracytic stomatal aperture. These differences are also present in extant species. Compared with Lindera tonkinensis, the nearest living relative(NLR) of L. acuminatissima shows that these differences are relevant to the growth, position, and development of leaves. Leaf-type classification statistics of L. acuminatissima indicate that when all fossil leaves are taken into consideration, A-type leaves account for 24%, B-type leaves make up 56%, and C-typy leaves account for 20%. Comparing the above result with that of NLRs, A-type leaves are generally immature spires and cannot be preserved easily, B-type leaves are regular mature leaves and fossilize more easil, and C-type leaves are usually old leaves occurring at the bottom, broken, ill and consumed by worms. | DAO KeQun DONG Chong XU XiaoHui DU BaoXia WU JingYu XIE SanPing SUN BaiNian | 2013 | 科学通报2013，58，S1： | 0 |
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