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Applications of stable isotopes to study plant-animal relationships in terrestrial ecosystems

chinese Science Bulletin 2004年第22期49卷 2339-2347页

作者： wang jianzhu1,lin guanghui1,2,huang jianhui1 & han xingguo1 1.key laboratory of quantitative vegetation sciences and research center for plant ecology and biodiversity conservation,institute of botany,chinese academy of sciences,beijing 100093,china 2.Department of Global ecology,Carnegie Institution of Washington,Stanford,CA 94305,USA key laboratory of quantitative vegetation sciences and research center for plant ecology and biodiversity conservation Institute of Botany Chinese Academy of Sciences Beijing 100093 China Department of Global ecology Carnegie Institution of Washington Stanford CA 94305 USA

As natural tracers, stable isotopes have been extensively used in plant physiological, ecological and envi- ronmental research. Recently, animal physiological ecologists have also applied stable isotope techniques to study plant- animal relationships. The isotopic compositions of animal body generally reflect and integrate their diets over a time period ranging from hours to years to the lifetime of an indi- vidual. When animal living habitat changes or animals move to a new environment, the animal isotopic compositions will shift accordingly. Thus, stable isotope signatures of an ani- mal can truly reflect its food sources, habitat, distribution and movement patterns during a given time period. More- over, by analyzing animal-tissue isotopic compositions at different temporal scales, we can improve our understanding of animal adaptation to environmental changes. Stable iso- tope technique also provides an ideal tool to study animal foodweb relationship and community structure because of isotopic fractionation during the processes of nutrient as- similation by animals. Stable isotope technique can continu- ously measure animal trophic position in a foodweb, which can eventually reveal the predator-prey relationship and its role in determining matter balance and energy flow in the entire ecosystem. Stable isotope technique has been one of the most important and efficient tools in studying plant-animal relationship. In this paper, we first review recent advances in the application of stable isotope techniques to plant-animal relationship research then evaluate their advantages and disadvantages, and finally discuss some future directions associated with stable isotope applications to plant-animal relationship research.

关键词：稳定同位素植物-动物关联性食物来源营养水平动物迁移

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Plateau Marsh Methane Oxidation as affected by Inorganic N

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Pedosphere 2004年第2期14卷 195-204页

作者： wangZhi-Ping DUANYi YANGJu-Rong LIling-Hao hanXing-Guo laboratoryofquantitativevegetationecology InstituteofBotanyChineseAcademyofSciencesBeijing100093（China）／E-mail：wangzp5@*** StatekeylaboratoryofGasGeochemistry LanzhouInstituteofGeology.ChineseAcademyofSciencesLanzhou730000（China） CollegeofResourceandEnvironment BEijingNormailUniversityBeijing100875（China）

In a series of laboratory incubations using soils of two contrasting sitesfrom a temperate marsh on the Qinghai-Tibet Plateau, potential methane (CH_4) oxidation rates weremeasured to study the effects of inorganic N inputs on CH_4 oxidation. For adrained site, subsurfacepeat (5--15 cm) at an initial 20 mu L CH_4 L^(-1) showed a significantly different (P 20.9 ng CH_4 gDW (dryweight)^(-1) h^(-1); the underlying mineral soil layers (15--30 and 30--50 cm) also had a strongCH_4 oxidation capacity at about an initial 2 000 mu L CH_4 L^(-1). With a waterlogged site, theCH_4 oxidation rate in an aerobic incubation was significantly greater (P 2SO_4, NH_4Cl and NH_4NO_3, exhibited strong inhibitions, which varied as a function of theadded salts and the initial CH_4 level Increasing NH_4^+ usually resulted in greater inhibition andincreasing initial CH_4 concentrations resulted in less NH_4^+ inhibition on CH4 oxidation innatural high-altitude, low-latitude wetlands could be as important as has been reported foragricultural and forest soils. The NH_4^+ effects on the CH_4 oxidation rate need to be furtherinvestigated in a wide range of natural wetland soil types.

关键词： ammonium inhibition inorganic N methane oxidation plateau marsh

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Relationship Between Microbial Community and Soil Properties During Natural Succession of Abandoned Agricultural Land

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Pedosphere 2010年第3期20卷 352-360页

作者： JIA Guo-Mei ZhanG Pei-Dong wang Gang CAO Jing han Jing-Cheng huang Ying-Ping College of Chemistry and Life Science China Three Gorges Unversity Yichang 443002 (China) key laboratory of Arid and Grassland ecology School of Life Science Lanzhou University Lanzhou 730000 (China) Qingdao institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences Qingdao 266071 (China)

The changes of microbial biomass carbon (MBC) and nitrogen (MBN) and microbial community in the topsoil of the abandoned agricultural land on the semi-arid Loess Plateau in china during the natural succession were evaluated to understand the relationship between microbial community and soil properties. MBC and MBN were measured using fumigation extraction, and microbial community was analyzed by the method of fatty acid methyl ester (FAME). The contents of organic C, total N, MBC, MBN, total FAME, fungal FAME, bacterial FAME and Gram-negative bacterial FAME at the natural succession sites were higher than those of the agricultural land, but lower than those of the natural vegetation sites. The MBC, MBN and total FAME were closely correlated with organic C and total N. Furthermore, organic C and total N were found to be positively correlated with fungal FAME, bacterial FAME, fungal/bacterial and Gram-negative bacterial FAME. Natural succession would be useful for improving soil microbial properties and might be an important alternative for sustaining soil quality on the semi-arid Loess Plateau in china.

关键词： fatty acid methyl ester microbial biomass soil carbon soil nitrogen

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土壤含水量调控高寒草原生态系统N_(2)O排放对增温的响应

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植物生态学报 2018年第1期42卷 105-115页

作者：王冠钦李飞彭云峰陈永亮韩天丰杨贵彪刘莉周国英杨元合中国科学院植物研究所植被与环境变化国家重点实验室北京100093 中国科学院大学北京100049 中国科学院西北高原生物研究所藏药研究重点实验室西宁810008

土壤氧化亚氮(N_2O)排放是大气N_2O不可忽视的来源。然而,目前学术界在气候变暖对土壤N_2O排放影响方面的认识仍存在较大争议,且调控土壤N_2O排放的微生物机制尚不明确。为此,该研究以青藏高原高寒草原生态系统为研究对象,使用透明开顶... 详细信息

土壤氧化亚氮(N_2O)排放是大气N_2O不可忽视的来源。然而,目前学术界在气候变暖对土壤N_2O排放影响方面的认识仍存在较大争议,且调控土壤N_2O排放的微生物机制尚不明确。为此,该研究以青藏高原高寒草原生态系统为研究对象,使用透明开顶箱(OTCs)模拟气候变暖,并基于静态箱法测定了2014和2015年生长季(5–10月)的土壤N_2O通量,同时利用定量PCR技术测定了表层(0–10 cm)土壤中氨氧化古菌(AOA)和氨氧化细菌(AOB)的基因丰度。结果显示:增温处理导致2014和2015年生长季表层(0–10 cm)土壤温度分别升高了1.7℃和1.6℃,土壤体积含水量下降了2.5%和3.3%,其他的土壤理化性质没有发生显著变化。土壤N_2O通量呈现年际差异,2014和2015年生长季的平均值分别为3.23和1.47μg·m^(–2)·h^(–1),然而,增温处理并没有显著改变土壤N_2O通量。2014年生长季主导硝化作用的AOA和AOB的基因丰度分别为5.0×10~7和4.7×10~5拷贝·g^(–1),2015年为15.2×10~7和10.0×10~5拷贝·g^(–1)。尽管基因丰度存在显著的年际差异,但在两年中与对照相比并未发生显著变化。在生长季尺度上,增温导致的土壤N_2O变化量与其引起的土壤水分变化量之间显著正相关,而与土壤温度的变化量之间没有显著相关关系。以上结果表明,增温导致的土壤干旱会抑制土壤N_2O通量对增温的响应,意味着未来评估气候变暖情景下土壤N_2O排放量时需考虑增温引发的土壤干旱等间接效应。

关键词：气候变暖氧化亚氮氨氧化古菌氨氧化细菌青藏高原

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Assessing the impacts of climate change and anthropogenic activities on vegetation in southwest china

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Journal of Mountain Science 2022年第9期19卷 2678-2692页

作者： ZhanG Yu-xin LIU Qin wang Yu-kuan huang Jing-han institute of Mountain Hazards and Environment Chinese Academy of SciencesChengdu 610041China china-Pakistan Joint research center on Earth sciences CAS-HECIslamabad 45320Pakistan Yunnan Provincial Building Materials Science research and Design institute Co. LtdKunming 650033China

The topography and geomorphology of southwest china are complex,and the intensity of human activities not *** impact of climate change and anthropogenic activities on vegetation shows temporal and spatial ***,we used normalized difference vegetation index(NDVI)to analyze the impact of climate change and anthropogenic activities on vegetation in four provinces and municipality in the southwest china from 2000 to *** results showed that(1)NDVI increased 0.004–0.005/yr during this *** 57.74%–69.09%of the area with significant changes was found to be primarily affected by anthropogenic activities during all four seasons and the growing season,while 6.05%–10.74%and 5.09%–9.77%of the area was affected by temperature and precipitation,respectively.(2)The impact of temperature and precipitation changes were spatially *** had a positive impact during spring and summer in the northwestern ***,NDVI was positively affected in the southwestern and eastern regions,while the western region was negatively affected by *** temperatures and precipitation had the greatest impact throughout the year.(3)Returning farmland to forests and improving agricultural management demonstrated positive impacts of anthropogenic activities on the vegetation,while areas with significant negative impacts due to anthropogenic activities were located near the provincial capitals of the four provinces and *** study can provide a scientific basis for accurately identifying key ecological protection areas in Southwest china.

关键词： Climate change NDVI Southwest china vegetation Anthropogenic activities

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2019-2022年天津北大港湿地遥感分类数据集

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中国科学数据（中英文网络版） 2024年第3期9卷 126-139页

作者：张心悦韩杏杏王铁军李攀黄辉陈楚天津大学地球系统科学学院表层地球系统科学研究院天津300072 天津大学天津环渤海滨海地球关键带国家野外科学观测研究站天津300072 中国林业科学研究院林业研究所国家林草局林木培育重点实验室北京100091 南京林业大学南方现代林业协同创新中心南京210037 河南黄河小浪底关键带国家野外科学观测研究站河南济源454650 天津市测绘地理信息研究中心天津300201

湿地是地球上最重要的生态系统之一,具有净化水质、维持生物多样性等重要功能。由于湿地具有特殊的水文和植被特征,传统的监测方法难以对其进行测绘和管理。随着大数据和云计算的兴起,GEE(Google Earth Engine)为长时间序列的数据处理... 详细信息

湿地是地球上最重要的生态系统之一,具有净化水质、维持生物多样性等重要功能。由于湿地具有特殊的水文和植被特征,传统的监测方法难以对其进行测绘和管理。随着大数据和云计算的兴起,GEE(Google Earth Engine)为长时间序列的数据处理提供了可能。本研究基于GEE平台,结合Sentinel-1雷达影像和Sentinel-2光学影像,利用随机森林分类算法对天津北大港湿地进行信息提取,探讨多源遥感数据和时间序列特征对天津北大港湿地分类的重要性,并最终得到2019–2022年天津北大港湿地遥感分类数据集。经实测数据验证,分类结果的总体精度为95.35%,符合精度要求。本数据集可为天津北大港湿地保护和管理提供科学依据。

关键词：北大港湿地 GEE Sentinel-1 Sentinel-2 随机森林

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Identification of QTLs Associated with Total Soyasaponin Content in Soybean (Glycine max (L.) Merr.)

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Journal of Integrative Agriculture 2012年第12期11卷 1976-1984页

作者： huang Shan-shan han Ying-peng LI Chang-suo TIAN Jun LI Wen-bin wang Ji-an key laboratory of Soybean Biology Ministry of Education/Soybean Research Institute Northeast Agricultural University plant Protection institute Heilongjiang Academy of Land Reclamation Sciences

Soyasaponins are valuable compounds in certain drugs, industry, food additives and surfactants. Selecting cultivars with higher-soyasaponin content along with agronomic traits is a main goal for many soybean breeders. The aim of the present study was to identify the quantitative trait loci （QTLs） associated with total soyasaponin content through a F2 population, which was derived from a cross between Ha 91016 （higher soyasaponin content cultivar, 16.8 mg gl） and N98-9445A （lower soyasaponin content, only 5.7 mg g-l）. A genetic linkage map including a total of 162 simple sequence repeat markers was constructed, which covered the total length 2 735.5 cM, and the average distance between markers was 16.96 cM. Two QTLs associated with total soyasaponin content were identified. One, qSAP1 （located in sat_044-satt102 of linkage group （LG） K）, could explain 12.6% of phenotypic variance. The other, qSAP_2, was located between satt368 and sat413 of LG Dla, which could explain 15.8% of phenotypic variance. It was concluded that the two QTLs would have some potential value for marker-assisted selection for high-soyasaponin content breeding in soybeans.

关键词： quantitative trait loci (QTL) simple sequence repeats (SSR) marker-assisted selection (MAS) soybean,soyasaponin

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Mex3a promotes oncogenesis through the RAP1/MAPK signaling pathway in colorectal cancer and is inhibited by hsa-miR-6887-3p

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Cancer Communications 2021年第6期41卷 472-491页

作者： Haixia Li Jinghui Liang Jiang wang Jingyi han Shuang Li Kai huang Chuanyong Liu Department of Physiology and Pathophysiology School of Basic Medical SciencesCheeloo College of MedicineShandong UniversityJinanShandong 250012P.R.China Department of Medical Oncology Qilu HospitalCheeloo College of MedicineShandong UniversityJinanShandong 250012P.R.China Provincial key Lab of Mental Disorder Shandong UniversityJinanShandong 250012P.R.China Department of Thoracic Surgery Qilu HospitalCheeloo College of MedicineShandong UniversityJinanShandong 250012P.R.China Weifang People’s Hospital WeifangShandong 261000P.R.China

Background:Although Mex3 RNA-binding family member A(Mex3a)has demonstrated an important role in multiple cancers,its role and regulatory mechanism in CRC is *** this study,we aimed to investigate the role and clinical significance of Mex3a in CRC and to explore its underlying ***:Western blotting and quantitative real-time polymerase chain reaction(qRT-PCR)were performed to detect the expression levels of genes.5-Ethynyl-2’-deoxyuridine(EDU)and transwell assays were utilized to examine CRC cell proliferation and metastatic *** R software was used to do hierarchical clustering analysis and Kyoto Encyclopedia of Genes and Genomes(KEGG)pathway *** and rescue experiments which included U0126,a specific mitogen activated protein kinase kinase/extracellular regulated protein kinase(MEK/ERK)inhibitor,and PX-478,a hypoxia-inducible factor 1 subunit alpha(HIF-1α)inhibitor,were used to study the molecularmechanisms of Mex3a in CRC ***-immunoprecipitation(Co-IP)assay was performed to detect the interaction between two *** analysis including available public database and Starbase software(***)were used to evaluate the expression and prognostic significance of ***(***)and the miRDB(***)website were used to predict the combination site between microRNA and target ***/c nude micewere used to study the function of Mex3a and hsa-miR-6887-3p in ***:Clinicopathological and immunohistochemical(IHC)studies of 101 CRC tissues and 79 normal tissues demonstrated that Mex3a was a significant prognostic factor for overall survival(OS)in CRC ***3a knockdown substantially inhibited the migration,invasion,and proliferation of CRC *** analysis and mechanism verification showed that Mex3a regulated the RAP1 GTPase activating protein(RAP1GAP)/MEK/ERK/HIF-1α***,RAP1GAP was identified to interact with Mex3a in Co-IP expe

关键词： Mex3a RAP1GAP microRNA hsa-miR-6887-3p MEK/ERK/HIF-1αsignaling colorectal cancer proliferation invasion migration prognosis

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宁夏黄土区典型坡面表层土壤有机碳含量的空间变化特征及尺度效应

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林业科学 2024年第1期60卷 19-31页

作者：韩新生刘广全许浩董立国郭永忠安钰万海霞王月玲中国水利水电科学研究院北京100038 宁夏农林科学院林业与草地生态研究所、宁夏防沙治沙与水土保持重点实验室、宁夏生态修复与多功能林业综合研究中心银川750002

【目的】定量认识土壤有机碳(SOC)含量在坡面上的空间异质性及尺度效应,探索“由点及面”估算坡面平均SOC含量的精确便捷途径,为细致刻画坡面土壤资源状况、全面理解生态系统碳循环、制定土壤高质量管理方案提供科学基础。【方法】在宁... 详细信息

【目的】定量认识土壤有机碳(SOC)含量在坡面上的空间异质性及尺度效应,探索“由点及面”估算坡面平均SOC含量的精确便捷途径,为细致刻画坡面土壤资源状况、全面理解生态系统碳循环、制定土壤高质量管理方案提供科学基础。【方法】在宁夏半干旱黄土丘陵区,选择3个相邻的由退耕还林工程形成的典型坡面,从坡顶向坡脚设置连续样点,调查各样点的土地利用、植被特征、立地条件及表层(0^20 cm)SOC含量,分析其坡向差异、坡位变化;以“离坡顶的水平距离或相对距离”为自变量,以表层SOC含量的顺坡滑动平均值为因变量,定量描述坡面尺度效应;再以坡面上任一样点表层SOC含量与坡面平均值的比值为因变量,实现由“点”到“面”的尺度上推。【结果】研究区表层SOC含量存在明显的坡向差异、坡位变化、尺度效应。表层SOC含量的坡面平均值在南坡(7.60 g·kg^(-1))最高,东坡(6.42 g·kg^(-1))次之,西坡(5.65 g·kg^(-1))最低,其坡位间变幅在东坡(15.95 g·kg^(-1))最大,其次为西坡(11.34 g·kg^(-1)),最小为南坡(9.72 g·kg^(-1)),说明东坡的坡面效应最强,其次为西坡,南坡最弱。东坡、西坡、南坡表层SOC含量的坡位变化大致相同,均由坡顶向下逐渐减小,至离坡顶水平距离200、150、280 m(相对距离0.73、0.45、0.76)后趋于稳定,主要与坡面“上部为自然状态的坡地+林草植被+恢复年限长、下部为人工梯田+林农植被+扰动频繁”的空间格局有关。在东坡、西坡、南坡上,距坡顶水平距离每增加100 m,SOC含量的滑动平均值分别变化-3.40、-2.50、-1.51 g·kg^(-1);距坡顶相对距离每增加0.1,SOC含量的滑动平均值分别变化-0.96、-0.75、-0.55 g·kg^(-1)。构建3个坡向不同坡位样点表层SOC含量与坡面平均值的比值随离坡顶水平距离或相对距离增加而变化的数量关系(R^(2)>0.7,P1),籍此可由坡面上任一样点表层SOC含量精确便捷地估算坡面平均值。将所有位点数据融合得出,离坡顶相对距离0.4的位点表层SOC含量最接近坡面平均值。【结论】半干旱黄土丘陵区坡面表层SOC含量沿坡从上至下基本呈先减小后稳定的变化,与土地利用类型、植被类型、恢复年限的坡面分布格局有关。以顺坡(相对)水平坡长增加为尺度变量可较好地定量刻画表层SOC含量的坡面变化特征及尺度效应,藉此可实现坡面表层SOC含量平均值的精确便捷推算。

关键词：黄土丘陵区立地条件土地利用土壤有机碳含量坡面变化尺度效应

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Modulating the C-terminus of DEP1 synergistically enhances grain quality and yield in rice

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Journal of Genetics and Genomics 2022年第5期49卷 506-509页

作者： Haixiang huang Yafeng Ye Wenzhen Song Qi Li Ruixi han Chenchen Wu Shuoxun wang Jianping Yu Xueying Liu Xiangdong Fu Qian Liu Kun Wu State key laboratory of plant Cell and Chromosome Engineering Institute of Genetics and Developmental BiologyInnovation Academy for Seed DesignChinese Academy of SciencesBeijing 100101China Jiaxing academy of Agricultural sciences JiaxingZhejiang 314024China key laboratory of High Magnetic Field and Ion Beam Physical Biology Hefei Institutes of Physical ScienceChinese Academy of SciencesHefeiAnhui 230031China College of Life sciences University of Chinese Academy of SciencesBeijing 100049China Development center of Science and Technology Ministry of Agriculture and Rural AffairsBeijing 100125China College of Life sciences University of Chinese Academy of SciencesBeijing100049China

Grain shape is a key breeding target that influences both grain yield and appearance quality in rice. Breeding for long-slender grains is an effective strategy to improve grain quality (Jain et al., 2004;wang et al., 2012, 2015a). In the past two decades, several quantitative trait loci (QTLs) responsible for grain size and shape have been identified, including GS3 (Fan et al., 2006), GS5 (Li et al., 2011).

关键词： breeding grain synergistic

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