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中国科学院昆明植物研究所知识管理系统
Knowledge Management System of Kunming Institute of Botany,CAS
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GST, P < 0.05) were exhibited by this species. The SAMOVA revealed seven diverging groups of related chlorotypes, six of them had distinct nonoverlapping geographical ranges: one in the northeast comprising 10 populations, a second with a southeast distribution comprising 22 populations, and the remaning four groups comprising 15 populations located in the west part of the species’ range along different river valleys. The genetic clustering of populations into three regions was also supported by analysis of molecular variance, which showed that most genetic variation (82.43%) was found among these three regions. Two clusters were distinguished by both phylogenetic analysis and genealogical analysis of chlorotypes, one consisting of chlorotypes from the western region and the second consisting of those from the eastern region. Significant genetic differences between the two regions might be attributed to vicariance and restricted gene flow, and this vicariance could be explained by the physical environmental heterogeneity on each side of the Tanaka-Kaiyong Line. Following the uplift of the Tibetan Plateau, the reorganization of the major river drainages was primarily caused by river separation and capture events. These historical events could change the distribution of S. davidii from fragmented to continuous (Upper/Lower Jinshajiang and Yalongjiang/Daduhe), and from continuous to fragmented (Nujiang and Jinshajiang/Honghe). However, spatial and temporal patterns of phylogeographic divergence are strongly associated with historical disjunction rather than modern drainage connections. Moreover, the following north-south split in the eastern region and effective isolation with their genetic diversity were essentially modelled by genetic drift. The higher chlorotype richness and genetic divergence for populations in western region compared with other two regions suggests that there were multipe refugia or in situ survival of S. davidii in the Himalayan-Hengduan Mountain region. Fixation of chlorotypes in the northeastern region and near fixation in the southeastern region suggest a recent colonization of these areas. We further found that this species underwent past range expansion around 37-303 thousand years ago (kya). The southeastern populations likely experienced a demographic expansion via unidirectional gene flow along rivers, while northeastern populations underwent a more northward expansion, both from initial populations (s) (21, 22, 23) preserved on eastern refugia (Jinshajiang). This process might have been accompanied with a series of founder effects or bottlenecks making populations genetically impoverished. 3. Phylogeographic analysisbased on nuclear sequence，We sequenced the nuclear (ncpGS) region in all populations sampled, recovering 23 nuclear haplotypes. Compared to cpDNA, both NST (0.470) and GST (0.338) were relatively lower, but NST was also significantly larger than GST. 37.10% of the total variation was distributed among regions which was much lower than that shown by chlorotypes. Thus, more extensive distribution of nuclear haplotypes was exhibited across the geographical range instead of the strong population subdivision observed in chlorotypes. Similarly to the chloroplast data, we found that genetic differentiation of nDNA was positively correlated with the geographical distance, but the increase in the geographical distance between populations did not increase the genetic differentiation of nDNA as rapidly as that of cpDNA. These contrasting levels between the chloroplast and nuclear genomes of S. davidii are likely due to limited gene flow of cpDNA by seeds vs. the extensive gene flow of nDNA by wind-mediated pollen in the population history. We also determined from nuclear markers that haplotype diversity was reduced in the southeastern and northeastern regions due to the loss of rare haplotypes in western region. This reduction of gene diversity is also a signature of founder events or recent bottleneck during post-glacial colonization. However, nuclear diversity within populations remains high. This provides evidence that regionally pollen flow might be sufficiently high to blur the genetic identity of founder populations over a reasonably large spatial scale.3. Relationships among three varieties，The phylogenetic analysis identified two phylogroups of chlorotypes, corresponding to S. davidii var. davidii and var. chuansinesis. The former was distinguished by the abscence of predonminant nuclear haplotype H1 of the latter. The monophyletic group of chlorotypes in var. davidii and var. liangshanesis showed their relatively close relationship. And their genetic divergence from the third variety appears to be relative to their slight morphological difference in leaf size and the divergent environmental niche spaces they occupy. Thus, the observed differences in morphological characters between var. chuansinesis and other two varieties can be explained by the seed dispersal limitation illustrated above (as inferred by geographical separation) and by environmental heterogeneity (as inferred by precipitation or elevation) or by a combination of both. After all, the geological changes, drainage reorganization, and floristic differences following the Himalayan uplift have been suggested to affect the genetic structure of S. davidii. These results provide new insights into the phylogeographic pattern of plants in China. In addition, the unique population genetic structure found in S. davidii has provided important insights into the evolutionary history of this species. The genetic profile uncovered in this study is also critical for its conservation management. Our study has uncovered the existence of at least two ‘evolutionary significant units’ independent units within S. davidii, corresponding to var. davidii from eastern region and var. chuansinensis from western region. The conservation efforts should first focus on most western populations and on the southeastern ones exhibiting high levels of genetic diversity, while the genetically homogeneous northeastern populations located in the degraded Loess Plateau should require much greater conservation 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Microbial functional changes mark irreversible course of Tibetan grassland degradation
期刊论文
NATURE COMMUNICATIONS, 2022, 卷号: 13, 期号: 1, 页码: 2681
作者:
Breidenbach, Andreas
;
Schleuss, Per-Marten
;
Liu, Shibin
;
Schneider, Dominik
;
Dippold, Michaela A.
;
de la Haye, Tilman
;
Miehe, Georg
;
Heitkamp, Felix
;
Seeber, Elke
;
Mason-Jones, Kyle
;
Xu, Xingliang
;
Huanming, Yang
;
Xu, Jianchu
;
Dorji, Tsechoe
;
Gube, Matthias
;
Norf, Helge
;
Meier, Jutta
;
Guggenberger, Georg
;
Kuzyakov, Yakov
;
Spielvogel, Sandra
Adobe PDF(3136Kb)
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浏览/下载：2/0
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提交时间：2024/04/30
ARBUSCULAR MYCORRHIZAL STATUS
LIGNOCELLULOSE DEGRADATION
ALPINE MEADOWS
CARBON
PLATEAU
PASTURE
PLANTS
FUNGI
INTENSITY
ECOSYSTEM
Mapping of the ecosystem services flow from three protected areas in the far-eastern Himalayan Landscape: An impetus to regional cooperation
期刊论文
ECOSYSTEM SERVICES, 2021, 卷号: 47, 页码: 101222
作者:
Shakya,Bandana
;
Uddin,Kabir
;
Shaoliang,Yi
;
Bhatta,Laxmi Dutt
;
Lodhi,Mahendra Singh
;
Htun,Naing Zaw
;
Yongping,Yang
收藏
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浏览/下载：45/0
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提交时间：2022/04/02
Regional cooperation
Protected Areas Management
Ecosystems Services mapping
Service provisioning hotspots
Service beneficiary areas
Himalayan Landscape
NAMDAPHA NATIONAL-PARK
TRADE-OFFS
BIODIVERSITY CONSERVATION
CONCEPTUAL-FRAMEWORK
NATURE-RESERVE
MANAGEMENT
ECOLOGY
CHINA
SUSTAINABILITY
STRATEGIES
Arbuscular mycorrhizal trees influence the latitudinal beta-diversity gradient of tree communities in forests worldwide
期刊论文
NATURE COMMUNICATIONS, 2021, 卷号: 12, 期号: 1, 页码: 3137
作者:
Zhong,Yonglin
;
Chu,Chengjin
;
Myers,Jonathan A.
;
Gilbert,Gregory S.
;
Lutz,James A.
;
Stillhard,Jonas
;
Zhu,Kai
;
Thompson,Jill
;
Baltzer,Jennifer L.
;
He,Fangliang
;
LaManna,Joseph A.
;
Davies,Stuart J.
;
Aderson-Teixeira,Kristina J.
;
Burslem,David F. R. P.
;
Alonso,Alfonso
;
Chao,Kuo-Jung
;
Wang,Xugao
;
Gao,Lianming
;
Orwig,David A.
;
Yin,Xue
;
Sui,Xinghua
;
Su,Zhiyao
;
Abiem,Iveren
;
Bissiengou,Pulcherie
;
Bourg,Norm
;
Butt,Nathalie
;
Cao,Min
;
Chang-Yang,Chia-Hao
;
Chao,Wei-Chun
;
Chapman,Hazel
;
Chen,Yu-Yun
;
Coomes,David A.
;
Cordell,Susan
;
de Oliveira,Alexandre A.
;
Du,Hu
;
Fang,Suqin
;
Giardina,Christian P.
;
Hao,Zhanqing
;
Hector,Andrew
;
Hubbell,Stephen P.
;
Janik,David
;
Jansen,Patrick A.
;
Jiang,Mingxi
;
Jin,Guangze
;
Kenfack,David
;
Kral,Kamil
;
Larson,Andrew J.
;
Li,Buhang
;
Li,Xiankun
;
Li,Yide
;
Lian,Juyu
;
Lin,Luxiang
;
Liu,Feng
;
Liu,Yankun
;
Liu,Yu
;
Luan,Fuchen
;
Luo,Yahuang
;
Ma,Keping
;
Malhi,Yadvinder
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McMahon,Sean M.
;
McShea,William
;
Memiaghe,Herve
;
Mi,Xiangcheng
;
Morecroft,Mike
;
Novotny,Vojtech
;
O'Brien,Michael J.
;
den Ouden,Jan
;
Parker,Geoffrey G.
;
Qiao,Xiujuan
;
Ren,Haibao
;
Reynolds,Glen
;
Samonil,Pavel
;
Sang,Weiguo
;
Shen,Guochun
;
Shen,Zhiqiang
;
Song,Guo-Zhang Michael
;
Sun,I-Fang
;
Tang,Hui
;
Tian,Songyan
;
Uowolo,Amanda L.
;
Uriarte,Maria
;
Wang,Bin
;
Wang,Xihua
;
Wang,Youshi
;
Weiblen,George D.
;
Wu,Zhihong
;
Xi,Nianxun
;
Xiang,Wusheng
;
Xu,Han
;
Xu,Kun
;
Ye,Wanhui
;
Yu,Mingjian
;
Zeng,Fuping
;
Zhang,Minhua
;
Zhang,Yingming
;
Zhu,Li
;
Zimmerman,Jess K.
Adobe PDF(7895Kb)
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浏览/下载：256/171
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提交时间：2022/04/02
NEGATIVE DENSITY-DEPENDENCE
NESTEDNESS
TEMPERATURE
COMPONENTS
TURNOVER
PLANTS
FUNGI
ASSOCIATIONS
ECOLOGY
NETWORK
Spatial phylogenetics of two topographic extremes of the Hengduan Mountains in southwestern China and its implications for biodiversity conservation
期刊论文
PLANT DIVERSITY, 2021, 卷号: 43, 期号: 3, 页码: 181-191
作者:
Zhang,Yazhou
;
Qian,Lishen
;
Spalink,Daniel
;
Sun,Lu
;
Chen,Jianguo
;
Sun,Hang
Adobe PDF(4689Kb)
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浏览/下载：95/25
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提交时间：2022/04/02
Biodiversity conservation
Human activity
Nature reserves
Plant diversity
Subnival belt
River valley
HUMAN-POPULATION DENSITY
QINGHAI-TIBETAN PLATEAU
CLIMATE-CHANGE
EVOLUTIONARY HISTORY
THREATENED PLANTS
SPECIES-DIVERSITY
ENDEMISM
PATTERNS
VELOCITY
DRIVEN
Effects of degraded grassland conversion to mango plantation on soil CO2 fluxes
期刊论文
APPLIED SOIL ECOLOGY, 2021, 卷号: 167, 页码: 104045
作者:
Wang,Zhenghong
;
Wubshet,Tewodros Tesfaye
;
Chen,Huafang
;
Wu,Liqing
;
Yang,Huizhao
;
Yang,Jianbo
;
Goldberg,Stefanie Daniela
;
Xu,Jianchu
;
Gui,Heng
Adobe PDF(2322Kb)
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浏览/下载：93/40
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提交时间：2022/04/02
Fragile ecosystems
Agricultural and ecological transformation
Carbon emission
Land use
Enzyme activities
LAND-USE CHANGE
MICROBIAL COMMUNITY STRUCTURE
ENZYME-ACTIVITIES
BETA-GLUCOSIDASE
ORGANIC-CARBON
WATER CONTENT
RESPIRATION
BIOMASS
TEMPERATURE
NITROGEN
Mountain futures: pursuing innovative adaptations in coupled social-ecological systems
期刊论文
FRONTIERS IN ECOLOGY AND THE ENVIRONMENT, 2021, 卷号: 19, 期号: 6, 页码: 342-348
作者:
Grumbine,R. Edward
;
Xu,Jianchu
Adobe PDF(2501Kb)
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浏览/下载：47/7
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提交时间：2022/04/02
ECOSYSTEM SERVICES
CLIMATE
CHALLENGES
GOVERNANCE
KNOWLEDGE
Alpine community recruitment potential is determined by habitat attributes in the alpine ecosystems of the Himalaya-Hengduan Mountains, SW China
期刊论文
ECOLOGY AND EVOLUTION, 2021, 卷号: 11, 期号: 23, 页码: 17397-17408
作者:
Chen,Xufang
;
Qian,Lishen
;
Zhang,Yazhou
;
Shi,Honghua
;
Sun,Hang
;
Chen,Jianguo
Adobe PDF(1392Kb)
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浏览/下载：67/15
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提交时间：2022/04/02
alpine ecosystem
community recruitment
habitat type
Himalaya-Hengduan Mountain
seed bank
species diversity
SOIL SEED BANK
MICROSITE LIMITATION
GLACIER FORELAND
PLANT COMMUNITY
CUSHION PLANTS
CLIMATE-CHANGE
SPECIES-POOL
DISPERSAL
DESERT
STRATEGIES
Microplastics as an emerging threat to plant and soil health in agroecosystems
期刊论文
SCIENCE OF THE TOTAL ENVIRONMENT, 2021, 卷号: 787, 页码: 147444
作者:
Zhou,Jie
;
Wen,Yuan
;
Marshall,Miles R.
;
Zhao,Jie
;
Gui,Heng
;
Yang,Yadong
;
Zeng,Zhaohai
;
Jones,Davey L.
;
Zang,Huadong
Adobe PDF(2209Kb)
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浏览/下载：107/53
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提交时间：2022/04/02
Microplastics
Plant growth
Soil carbon storage
Nutrient cycling
Greenhouse gas emissions
Biodegradable plastics
Agroecosystem
POLYSTYRENE LATEX NANOPARTICLES
ORGANIC-MATTER
PLASTIC MULCH
FILM RESIDUES
CARBON
NITRIFICATION
MECHANISMS
CYTOTOXICITY
NANOPLASTICS
EMISSIONS
金沙江干热河谷长穗高山栎适应策略及其生态恢复应用初探
学位论文
, 2020
作者:
何小芳
Adobe PDF(2872Kb)
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浏览/下载：16/1
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提交时间：2023/11/02
基于SSR分子标记的极小种群野生植物滇桐遗传多样性和花粉流研究
学位论文
, 2020
作者:
陈娅玲
Adobe PDF(9986Kb)
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收藏
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浏览/下载：18/0
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提交时间：2023/11/02
