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Variation in transboundary flow of Nujiang River and its correlation with summer monsoon under the effect of the Longitudinal Range-Gorge

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science Bulletin 2007年第S2期 148-155页

作者： you weihong~(1+) guo zhirong~(1,2) he daming~3.1 department of atmospheric sciences,school of resource environment and earth science,yunnan university,kunming 650091,china 2 department of atmospheric sciences,Nanjing Information Engineering university,Nanjing 210044,china 3 Asia International Rivers Center,yunnan university,kunming 650091,china

The relationship between the variations of the Nujiang River transboundary flow and the summer mon- soon activity under the topographical effect of the Longitudinal Range-Gorge（LRG）is *** study is based on statistical analysis of the observed river flow data,and their correlation with the reanalyzed U/V wind fields of the National Centers for environment Prediction（NCEP）and the National Center for atmospheric Research（NCAR）,and the data of the Outgoing Longwave Radiation（OLR）of the National Oceanic and atmospheric Administration（NOAA）.It is concluded that the transboundary river flow is predominantly concentrated in the wet or rainy season（from May to October）,particularly in the summer or flood season（from June to August）.There is a clear tendency for the transboundary river flow to increase with time since 1970s,particularly apparent since *** to the topographical"east-west barrier and north-south corridor"effects of the LRG,the summer river flow variations are largely correlated with winds of the southerly and northerly at both high and low *** contrast, the river flow variations are apparently correlated wIth winds of the easterly and westerly only at the high altitudes,not at the low *** correlation between the OLR and the river flow varla- tions is also *** relationships are quantitatively described using two summer monsoon indices proposed in this *** index MI2includes both dynamical and thermodynamical effects and givee a generally good representation of the transboundary river flow variations in the LRG region of the Nujiang River *** MI2represents stronger summer monsoon activity and higher transboundary river flow,while smaller MI2suggests weaker monsoon circulation and lower water flow.

关键词： Longitudinal Range-Gorge(LRG) Nujiang River transboundary river flow summer monsoon monsoon index

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Variation in transboundary flow of Nujiang River and its correlation with summer monsoon under the effect of the Longitudinal Range-Gorge

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Chinese science Bulletin 2007年第A02期52卷 148-155页

作者： you weihong guo zhirong he daming department of atmospheric sciences School of Resource Environment and Earth Science Yunnan University Kunming 650091 China department of atmospheric sciences Nanjing Information Engineering University Nanjing 210044 China Asia Intemational Rivers Center Yunnan University Kunming 650091 China

在在纵的范围峡(LRG ) 的地形学的效果下面的 Nujiang 河 transboundary 流动和夏天季风活动的变化之间的关系被检验。学习基于观察的河流动数据，和他们与环境预言( NCEP )的国家中心和大气的研究( NCAR )的国家中心的重新分析的 U/V ... 详细信息

在在纵的范围峡(LRG ) 的地形学的效果下面的 Nujiang 河 transboundary 流动和夏天季风活动的变化之间的关系被检验。学习基于观察的河流动数据，和他们与环境预言( NCEP )的国家中心和大气的研究( NCAR )的国家中心的重新分析的 U/V 风领域的关联的统计分析，并且国家海洋、大气的管理( NOAA )的出去的 Longwave 放射( OLR )的数据。transboundary 河流动主要被集中在，这被结束湿或雨季(从 5 月到 10 月) ，特别地在夏天或洪水季节(从 6 月到 8 月) 。有一个清楚的趋势让 transboundary 河流动自从 1970 年代，与时间增加，自从 1980 年代特别地明显。由于地形学的东方西方障碍和 LRG 的纵贯的走廊效果，夏天河流动变化大部分与风被相关在高、低的高度南方、在北方。相反，河流动变化显然与风被相关仅仅在高高度，不是在低高度在东方、西。在 OLR 和河流动变化之间的否定关联也是明显的。这些关系是用索引在这篇论文建议了的二夏天季风描述的份量上。索引 MI 2 包括动态并且 thermodynamical 在 Nujiang 河盆的 LRG 区域完成并且给 transboundary 河流动变化的一个通常好的代表。更大的 MI 2 代表更强壮的夏天季风活动和更高的 transboundary 河流动，当更小的 MI 2 建议更弱的季风循环和更低的水流动时。

关键词：怒江夏季季候风纵向岭谷区

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Emerging contaminants:A One health perspective

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The Innovation 2024年第4期5卷 140-170,139页

作者： Fang Wang Leilei Xiang Kelvin Sze-Yin Leung Martin Elsner Ying Zhang Yuming guo Bo Pan Hongwen Sun Taicheng An Guangguo Ying Bryan WBrooks Deyi Hou Damian Ehelbling Jianqiang Sun Hao Qiu Timothy MVogel Wei Zhang Yanzheng Gao Myrna JSimpson Yi Luo Scott XChang Guanyong Su Bryan MWong Tzung-May Fu Dong Zhu Karl JJobst Chengjun Ge Frederic Coulon Jean Damascene Harindintwali Xiankui Zeng Haijun Wang Yuhao Fu Zhong Wei Rainer Lohmann Changer Chen Yang Song Concepcion Sanchez-Cid Yu Wang Ali El-Naggar Yiming Yao Yanran Huang Japhet Cheuk-Fung Law Chenggang Gu Huizhong Shen Yanpeng Gao Chao Qin Hao Li Tong Zhang Natàlia Corcoll Min Liu Daniel SAlessi Hui Li Kristian KBrandt Yolanda Pico Cheng Gu Jianhua guo Jianqiang Su Philippe Corvini Mao Ye Teresa Rocha-Santos Huan he Yi Yang Meiping Tong Weina Zhang Fidèle Suanon Ferdi Brahushi Zhenyu Wang Syed AHashsham Marko Virta Qingbin Yuan Gaofei Jiang Louis A.Tremblay Qingwei Bu Jichun Wu Willie Peijnenburg Edward Topp Xinde Cao Xin Jiang Minghui Zheng Taolin Zhang Yongming Luo Lizhong Zhu Xiangdong Li DamiàBarceló Jianmin Chen Baoshan Xing Wulf Amelung Zongwei Cai Ravi Naidu Qirong Shen Janusz Pawliszyn Yong-guan Zhu Andreas Schaeffer Matthias C.Rillig Fengchang Wu Gang Yu James M.Tiedje State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil ScienceChinese Academy of SciencesNanjing 210008China university of Chinese Academy of sciences Beijing 100049China department of Chemistry Hong Kong Baptist UniversityHong KongChina HKBU Institute of Research and Continuing Education Shenzhen Virtual University ParkShenzhenChina Technical university of Munich TUM School of Natural SciencesInstitute of Hydrochemistry85748 GarchingGermany school of resources&environment Northeast Agricultural UniversityHarbin 150030China Climate Air Quality Research UnitSchool of Public Health and Preventive MedicineMonash UniversityMelbourneVICAustralia Faculty of environmental science&Engineering Kunming University of Science&TechnologyKunming 650500China Ministry of Education Key Laboratory of Pollution Processes and environmental Criteria College of Environmental Science and EngineeringNankai UniversityTianjin 300350China Guangdong Key Laboratory of environmental Catalysis and health Risk Control School of Environmental Science and EngineeringInstitute of Environmental Health and Pollution ControlGuangdong University of TechnologyGuangzhou 510006China Ministry of Education Key Laboratory of environmental Theoretical Chemistry South China Normal UniversityGuangzhouGuangdong 510006China department of environmental science Baylor UniversityWacoTXUSA Center for Reservoir and Aquatic Systems Research(CRASR) Baylor UniversityWacoTXUSA school of environment Tsinghua UniversityBeijing 100084China school of Civil and environmental Engineering Cornell UniversityIthacaNY 14853USA Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province Zhejiang University of TechnologyHangzhou 310014China school of environmental science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China Laboratoire d’Ecologie Microbienne Universite Claude Bernard Lyon 1UMR CNRS 5557UMR INRAE 1418VetAgro Sup69622 VilleurbanneFrance department of Pla

environmental pollution is escalating due to rapid global development that often prioritizes human needs over planetary *** global efforts to mitigate legacy pollutants,the continuous introduction of new substances remains a major threat to both people and the *** response,global initiatives are focusing on risk assessment and regulation of emerging contaminants,as demonstrated by the ongoing efforts to establish the UN’s Intergovernmental science-Policy Panel on Chemicals,Waste,and Pollution *** review identifies the sources and impacts of emerging contaminants on planetary health,emphasizing the importance of adopting a One health *** for monitoring and addressing these pollutants are discussed,underscoring the need for robust and socially equitable environmental policies at both regional and international *** actions are needed to transition toward sustainable pollution management practices to safeguard our planet for future generations.

关键词： pollution planet contaminants

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Composition and source apportionment of dust fall around a natural lake

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Journal of environmental sciences 2015年第7期27卷 143-155页

作者： Mohd Talib Latif Sofia Aida Ngah Doreena Dominick Intan Suraya Razak Xinxin guo Thunwadee Srithawirat Idris Mushrifah school of environmental and Natural resource sciences Faculty of Science and Technology Universiti Kebangsaan Malaysia Institute for environment and Development (LESTARI) Universiti Kebangsaan Malaysia Centre for atmospheric Chemistry University of Wollongong department of environmental Engineering Faculty of Engineering and Green Technology Universiti Tunku Abdul Rahman department of environmental science Faculty of Science and Technology Pibulsongkram Rajabhat University Pusat Penyelidikan Tasik Chini (PPTC) Faculty of Science and Technology Universiti Kebangsaan Malaysia

The aim of this study was to determine the source apportionment of dust fall around Lake Chini, Malaysia. Samples were collected monthly between December 2012 and March2013 at seven sampling stations located around Lake Chini. The samples were filtered to separate the dissolved and undissolved solids. The ionic compositions（NO-3, SO2-4, Cl-and NH＋4） were determined using ion chromatography（IC） while major elements（K, Na, Ca and Mg） and trace metals（Zn, Fe, Al, Ni, Mn, Cr, Pb and Cd） were determined using inductively coupled plasma mass spectrometry（ICP-MS）. The results showed that the average concentration of total solids around Lake Chini was 93.49 ± 16.16 mg/（m2·day）. SO2-4, Na and Zn dominated the dissolved portion of the dust fall. The enrichment factors（EF） revealed that the source of the trace metals and major elements in the rain water was anthropogenic, except for Fe. Hierarchical agglomerative cluster analysis（HACA） classified the seven monitoring stations and 16 variables into five groups and three groups respectively. A coupled receptor model, principal component analysis multiple linear regression（PCA-MLR）, revealed that the sources of dust fall in Lake Chini were dominated by agricultural and biomass burning（42%）,followed by the earth＇s crust（28%）, sea spray（16%） and a mixture of soil dust and vehicle emissions（14%）.

关键词： Trace metal Major element Anion Source apportionment Lake Ghini Malaysia

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Aerosol and boundary-layer interactions and impact on air quality

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National science Review 2017年第6期4卷 810-833页

作者： Zhanqing Li Jianping guo Aijun Ding Hong Liao Jianjun Liu Yele Sun Tijian Wang Huiwen Xue Hongsheng Zhang Bin Zhu State Key Laboratory of earth Surface Processes and resource Ecology GCESS Beijing Normal University department of atmospheric and Oceanic sciences University of Maryland State Key Laboratory of Severe Weather Chinese Academy of Meteorological Sciences school of atmospheric sciences Nanjing University school of environmental science and Engineering Nanjing University of Information Science and Technology State Key Laboratory of atmospheric Boundary Layer Physics and atmospheric Chemistry Institute of Atmospheric PhysicsChinese Academy of Sciences Center for Excellence in Regional atmospheric environment Institute Chinese Academy of Sciences department of atmospheric and Oceanic sciences Peking University school of atmospheric Physics Nanjing University of Information Science and Technology

Air quality is concerned with pollutants in both the gas phase and solid or liquid phases. The latter are referred to as aerosols, which are multifaceted agents affecting air quality, weather and climate through many mechanisms. Unlike gas pollutants, aerosols interact strongly with meteorological variables with the strongest interactions taking place in the planetary boundary layer(PBL). The PBL hosting the bulk of aerosols in the lower atmosphere is affected by aerosol radiative effects. Both aerosol scattering and absorption reduce the amount of solar radiation reaching the ground and thus reduce the sensible heat fluxes that drive the diurnal evolution of the PBL. Moreover, aerosols can increase atmospheric stability by inducing a temperature inversion as a result of both scattering and absorption of solar radiation, which suppresses dispersion of pollutants and leads to further increases in aerosol concentration in the lower *** positive feedback is especially strong during severe pollution events. Knowledge of the PBL is thus crucial for understanding the interactions between air pollution and meteorology. A key question is how the diurnal evolution of the PBL interacts with aerosols, especially in vertical directions, and affects air *** review the major advances in aerosol measurements, PBL processes and their interactions with each other through complex feedback mechanisms, and highlight the priorities for future studies.

关键词： aerosol PBL radiation aerosol-PBL interaction climate change

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Most root-derived carbon inputs do not contribute to long-term global soil carbon storage

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science china earth sciences 2023年第5期66卷 1072-1086页

作者： guocheng WANG Liujun XIAO Ziqi LIN Qing ZHANG Xiaowei guo Annette COWIE Shuai ZHANG Mingming WANG Songchao CheN Ganlin ZHANG Zhou SHI Wenjuan SUN Zhongkui LUO Institute of Agriculture Remote Sensing and Information Technology College of Environmental and Resource SciencesZhejiang UniversityHangzhou310058China LAPC Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing100029China school of atmospheric sciences Guangdong Province Key Laboratory for Climate Change and Natural Disaster StudiesSun Yat-sen UniversityZhuhai519082China New South Wales department of Primary Industries University of New EnglandArmidaleNSW2351Australia State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil ScienceChinese Academy of SciencesNanjing210008China Academy of Ecological Civilization Zhejiang UniversityHangzhou310058China Key Laboratory of environment Remediation and Ecological health Ministry of EducationZhejiang UniversityHangzhou310058China State Key Laboratory of Vegetation and environmental Change Institute of BotanyChinese Academy of SciencesBeijing100093China Key Laboratory of Agricultural Remote Sensing and Information System Zhejiang ProvinceHangzhou310058China

Plant root-derived carbon(C)inputs(I_(root))are the primary source of C in mineral bulk ***,a fraction of I_(root)may lose quickly(I_(loss),e.g.,via rhizosphere microbial respiration,leaching and fauna feeding)without contributing to long-term bulk soil C storage,yet this loss has never been quantified,particularly on a global *** this study we integrated three observational global data sets including soil radiocarbon content,allocation of photo synthetically assimilated C,and root biomass distribution in 2,034 soil profiles to quantify I_(root)and its contribution to the bulk soil C *** show that global average I_(root)in the 0-200 cm soil profile is 3.5 Mg ha^(-1)yr^(-1),~80%of which(i.e.,I_(loss))is lost rather than co ntributing to long-term bulk soil C storage.I_(root)decreases exponentially with soil depth,and the top 20 cm soil contains>60%of total I_(root).Actual C input contributing to long-term bulk soil storage(i.e.,I_(root)-I_(loss))shows a similar depth distribution to I_(root).We also map I_(loss)and its depth distribution across the *** results demonstrate the global significance of direct C losses which limit the contribution of I_(root)to bulk soil C storage;and provide spatially explicit data to facilitate reliable soil C predictions via separating direct C losses from total root-derived C inputs.

关键词： Carbon inputs Root biomass Soil organic carbon Depth distribution Bulk soil carbon Radiocarbon

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A New Statistic Approach towards Landslide Hazard Risk Assessment

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International Journal of Geosciences 2014年第1期5卷 38-49页

作者： George Gaprindashvili Jianping guo Panisara Daorueang Tian Xin Pooyan Rahimy 1department of Geology National Environmental Agency Ministry of Environment and Natural Resources Protection of Georgia Tbilisi Georgia 2Institute of Geo-Information Science and Earth Observation (ITC) of the University of Twente Enschede The Netherlands department of Public Works and Town & Country Planning Ministry of Interior Bangkok Thailand Institute of atmospheric Composition Chinese Academy of Meteorological Sciences Beijing China Institute of Forest resource Information Techniques Chinese Academy of Forestry Beijing China school of environmental sciences University of Guelph Guelph Canada

To quantitatively assess the landslide hazard in Khelvachauri, Georgia, the statistic method of hazard index was applied. A spatial database was constructed in Geographic Information System (GIS) including topographic data, geologic maps, land-use, and active landslide events (extracted from the landslide inventory). After that, causal factors of landslides (such as slope, aspect, lithology, geomorphology, land-use and soil depth) were produced to calculate the corresponding weights, and thereby we defined a relevant set of spatial criteria for the latter landslide hazard assessment. On top of that, susceptibility assessment was performed in order to classify the area to low, moderate and high susceptible regions. Results showed that NW aspect, mountain geomorphology, private land-use, laterite loam and clay, slope between 19 to 24 degrees, and soil depth between 10 - 20 cm were found to have the largest contribution to high landslide susceptibility. The high success rate (72.35%) was obtained using area under the curve from the landslide susceptibility map. Meanwhile, effect analysis was carried out to assess the accuracy of the landslide susceptibility, indicating that the factor of slope played the most important role in determining the occurring probability of landslide although it did not deviate as much as other factors. Finally, the vulnerability analyses were carried out by means of the Spatial Multi-Criteria Estimation model, which in turn, led to the risk assessment. It turned out that not so much of the number of buildings (~ 34.13%) was associated with high-risk zone and that governmental and private land-use almost accounted for the same risk (39.9% and 40.9%, respectively).

关键词： Landslide Weight Susceptibility Vulnerability Statistic

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沈北煤田煤中琥珀的植物来源和稳定同位素的古环境意义

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地质学报 2023年第8期97卷 2445-2458页

作者：刘帮军田泽奇李鸿豆郭旭赵巧静石志祥郭文牧张宁 AchimBECHTEL Maksim GBLOKHIN 孙玉壮赵存良河北工程大学地球科学与工程学院河北邯郸056038 河北省资源勘测重点实验室河北邯郸056038 河北省煤炭资源综合开发与利用协同创新中心河北邯郸056038 中国矿业大学资源与地球科学学院江苏徐州221116 辽宁省地矿集团能源地质有限责任公司辽宁沈阳110000 莱奥本矿业大学应用地球科学与地球物理系奥地利莱奥本8700 俄罗斯科学院远东分院远东地质所俄罗斯海参崴690022

琥珀是由古代植物代谢产生的树脂聚合物形成的化石。琥珀中的有机质保存环境稳定、封闭,能很好地记载其形成时期的古植物和古环境等信息。本次研究运用气象色谱质谱联用仪(GC-MS)和元素分析稳定同位素质谱仪(EA-IRMS)等测试方法,研究了... 详细信息

琥珀是由古代植物代谢产生的树脂聚合物形成的化石。琥珀中的有机质保存环境稳定、封闭,能很好地记载其形成时期的古植物和古环境等信息。本次研究运用气象色谱质谱联用仪(GC-MS)和元素分析稳定同位素质谱仪(EA-IRMS)等测试方法,研究了沈北煤田煤中琥珀的有机地球化学组成、稳定同位素和化合物单体碳同位素特征。结果表明,琥珀中的饱和烃以二萜化合物为主(占73.45%),芳香烃以松香烷型化合物为主(56.17%);高含量的贝壳杉烷、雪松烷、扁枝烷和松香烷型化合物指示琥珀来源于松柏类植物,且以柏科植物为主。沈北琥珀的δ^(13)C值为-22.8‰~-21.2‰,与同时期其他地区琥珀的δ^(13)C值相似;氢同位素变化范围较小(-297.2‰~-276.0‰),氧同位素值为17.4‰~31.6‰。琥珀的稳定同位素组成(碳、氢和氧)进一步证明琥珀来源于裸子植物。琥珀的δ^(13)C值主要与其形成时的全球气温变化和大气组成有关。沈北琥珀的氢和氧同位素组成主要受植物种类(松柏类)以及植物生长的局部气温和降水条件有关。琥珀稳定碳同位素有望成为研究古气候和古大气组成的良好载体,琥珀的氢和氧同位素可以反映形成时期的古环境条件,但仍需进一步深入研究。

关键词：琥珀碳同位素植物来源始新世古环境

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Increasing importance of ammonia emission abatement in PM_(2.5)pollution control

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science Bulletin 2022年第17期67卷 1745-1749页

作者： Wen Xu Yuanhong Zhao Zhang Wen Yunhua Chang Yuepeng Pan Yele Sun Xin Ma Zhipeng Sha Ziyue Li Jiahui Kang Lei Liu Aohan Tang Kai Wang Ying Zhang Yixin guo Lin Zhang Lifang Sheng Xiuming Zhang Baojing Gu Yu Song Martin Van Damme Lieven Clarisse Pierre-François Coheur Jeffrey L.Collett Jr Keith Goulding Fusuo Zhang Kebin he Xuejun Liu College of resources and environmental sciences National Academy of Agriculture Green DevelopmentKey Laboratory of Plant-Soil InteractionsMinistry of EducationNational Observation and Research tation of Agriculture Green Development(QuzhouHebei)China Agricultural UniversityBeijing 100193China College of Oceanic and atmospheric sciences Ocean University of ChinaQingdao 266100China Collaborative Innovation Center on Forecast and Evaluation of Meteorological Desasters Nanjing University of Information Science&TechnologyNanjing 200433China State Key Laboratory of atmospheric Boundary Layer Physics and atmospheric Chemistry Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China College of earth and environmental sciences Lanzhou UniversityLanzhou 730000China Laboratory for Climate and Ocean-Atmosphere Studies Department of Atmospheric and Oceanic SciencesSchool of PhysicsPeking UniversityBeijing 100871China school of Agriculture and Food the University of MelbourneVictoria 3010Australia College of environmental and resource sciences Zhejiang UniversityHangzhou 310058China State Key Joint Laboratory of environmental Simulation and Pollution Control Department of Environmental SciencePeking UniversityBeijing 100871China Universitélibre de Bruxelles SpectroscopyQuantum Chemistry and Atmospheric Remote SensingBrusselsBelgium department of atmospheric science Colorado State UniversityFort Collins CO 80523USA Sustainable Agricultural sciences department Rothamsted ResearchHarpenden AL52JQUK school of environment Tsinghua UniversityBeijing 100084China

在新冠肺炎疫情期间,中国采取的管制封锁措施大幅减少了交通和工业排放,但农业排放没有受到影响,甚至有所增加.通过全国大气氨浓度地面监测、实时连续观测和卫星观测等手段,我们发现,新冠肺炎疫情管制措施实施期间中国大气氨浓度大范围... 详细信息

在新冠肺炎疫情期间,中国采取的管制封锁措施大幅减少了交通和工业排放,但农业排放没有受到影响,甚至有所增加.通过全国大气氨浓度地面监测、实时连续观测和卫星观测等手段,我们发现,新冠肺炎疫情管制措施实施期间中国大气氨浓度大范围显著增加,上升幅度在农村地区最为明显(增加22%),在城市和偏远地区变化不明显;而且,管控期间大气氨浓度上升幅度与2015~2019年相同月份相比更大.基于大气化学模式模拟发现,中国北方大气氨浓度上升主要是由农业氨排放增加所致.随着未来我国二氧化硫和氮氧化物等酸性气体排放控制的强化,农业氨排放的协同减排对于进一步削减大气PM污染、提升空气质量尤为重要.进一步分析表明,疫情期间50%农业氨排放可有效抵消氨浓度上升造成的二次无机气溶胶的形成.

关键词：管制措施工业排放污染治理地面监测空气质量卫星观测 PM 偏远地区

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吉兰泰荒漠-绿洲过渡带平茬花棒枝系构型特征

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中国农业科技导报 2023年第11期25卷 207-217页

作者：魏亚娟郭靖解云虎王项飞金山包头师范学院资源与环境学院内蒙古包头014030 内蒙古农业大学沙漠治理学院呼和浩特010018 内蒙古包钢稀土钢材板厂内蒙古包头014010 乌鲁木齐市林业和草原局乌鲁木齐830000 内蒙古兰太股份有限公司内蒙古阿拉善750333

为探讨平茬花棒(hedysarum scoparium)对不同立地类型的响应及适应机制,采用典型抽样法对吉兰泰荒漠-绿洲过渡带不同立地类型(丘顶、平缓沙地、丘间低地)平茬花棒枝系特征和生物量分配特征进行了分析。结果表明,各立地类型平茬花棒长势... 详细信息

为探讨平茬花棒(hedysarum scoparium)对不同立地类型的响应及适应机制,采用典型抽样法对吉兰泰荒漠-绿洲过渡带不同立地类型(丘顶、平缓沙地、丘间低地)平茬花棒枝系特征和生物量分配特征进行了分析。结果表明,各立地类型平茬花棒长势良好,丘间低地花棒株高和基径均显著高于丘顶(P平缓沙地>丘顶;总体分枝率由丘间低地到丘顶呈逐渐增大趋势,丘间低地平茬花棒的分枝能力弱于丘顶、平缓沙地;丘顶2、3级分枝数(SBR_(2∶3))的分枝能力大于丘间低地(P<0.05),平茬花棒在丘顶呈发散式生长;各级分枝长度由丘间低地到丘顶呈逐渐减小趋势,丘顶2、3级枝茎比(RBD_(3∶2))显著大于平缓沙地和丘间低地,丘顶平茬花棒枝系承载力优于平缓沙地和丘间低地;相关性分析发现,土壤含水量、土壤温度和空气温度对平茬花棒株高、冠幅、基径和地上生物量影响显著,且土壤水分与地上生物量呈正相关关系。研究结果表明,在水分条件较差的生境,平茬花棒通过增加枝径比、减少分枝数和地上生物量来适应外界环境变化,而且在丘间低地平茬措施更有利于退化花棒复壮更新。研究结果可为地区花棒人工林更新复壮及地区生态恢复提供科学依据。

关键词：枝系构型平茬花棒荒漠植物地上生物量吉兰泰

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