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| 1 | Crustal growth at ~2.5 Ga in the North China Craton:evidence from whole-rock Nd and zircon Hf isotopes in the Huai'an gneiss terrane显示文摘Huai'an 片麻岩岩层主要由 TTG 片麻岩和 dioritic 片麻岩组成。在 magmatic 锆石核心标明日期的 situ U-Pb 的激光显示这些片麻岩的 protolith 在 ∼2.5 Ga 被形成。TTG 片麻岩有积极 ε 2.7 ~ 4.3 的 Nd (t) 价值,和大多数 magmatic 锆石有积极 ε 2.0 ~ 8.3 的 Hf (t) 价值。这些积极 ε Nd (t) 和 ε Hf (t) 价值两个都类似于在 2.5 Ga 的同时期的弄空的披风的那些。而且,为 magmatic 锆石的 2.44 ~ 2.73 Ga 的年轻 Hf 模型年龄接近预定锆石生长。整个岩石的 ε Nd (t) 价值由于在它的来源的古老的外壳的参与比在 TTG 片麻岩在 dioritic 片麻岩(0.8 ~ 1.7 ) 是更低的。然而,从 dioritic 片麻岩的许多 magmatic 锆石有类似的 ε Hf (t) 价值(2.0 ~ 7.9 ) 到同时代的弄空的披风的;他们 2.49 ~ 2.75 Ga 的 Hf 模型年龄接近锆石的 U-Pb 年龄。最高的 ε Hf (t) 价值接近弄空的披风,和相对高的 ε Hf (t) 价值对应于相对年轻的 Hf 模型年龄。这些 Nd 和 Hf 同位素特征建议 Huai'an 片麻岩岩层的片麻岩的这二种类型在 ca 从少年外壳发源。2.5 Ga。 | LIU Fu GUO JingHui LU XiaoPing DIWU ChunRong | 2009 | Chinese Science Bulletin2009，54，24： | 24 |
| 2 | Generation of RAG 1- and 2-deficient rabbits by embryo microinjection of TALENs显示文摘 | Jun Song Juan Zhong Xiaogang Guo Yongqiang Chen Qingjian zou Jiao Huang Xiaoping Li Quanjun Zhang Zhiwu Jiang Chengcheng Tang Huaqiang Yang Tao Liu Peng Li Duanqing Pei Liangxue Lai | 2013 | Cell Research2013，23，8： | 15 |
| 3 | Genome-Wide Expression Pattern Analyses of the Arabidopsis Leucine-Rich Repeat Receptor-Like Kinases显示文摘像受体的蛋白质 kinases (RLK ) 是在房间房间和房间环境通讯起关键作用的 transmembrane 蛋白质的一个大组。基于细胞外的领域结构, RLK 被分类进超过 21 个亚科,充满白氨酸的重复 RLK (LRR-RLKs ) 在象 Arabidopsis 和米饭那样的植物在之中属于最大的亚科。在 Arabidopsis,有近似 223LRR-RLKs,但是哪个中的仅仅大约 60 个机能上地迄今为止被描述了。为了系统地在调整调查 LRR-RLKs 的 theroles,种生长,开发,和压力改编,我们产生了 promoter::GUS 为在 Arabidopsis 的所有 223 LRR-RLK 基因的转基因的植物并且在各种各样的发展舞台分析了他们的详细表达式模式。Theresults 提供 forfunctionally 阐明的珍贵资源这个大、必要的发信号的蛋白质亚科。 | Yunzhe Wu Qingqing Xun Yi Guo Jinghua Zhang Kaili Cheng Tao Shi Kai He Suiwen Hou Xiaoping Gou Jia Li | 2016 | Molecular Plant2016，9，2： | 13 |
| 4 | 4.1 Ga old detrital zircon in western Tibet of China显示文摘4.1 Ga old detrital zircon was found by SHRIMP U-Pb dating for quartz schist from Buring County in western Tibet, Southwest China. This is the oldest zircon U-Pb age found in China so far. The detrital zircon is a zircon of magmatic origin because its Th/ U ratios are 0.76 to 0.86. Two dates older than 4.0 Ga were measured only in one grain. U-Pb ages of 35 measured spots in 24 zircons can be subdivided into 6 groups, corresponding to at least 6 episodes of magmatic activity in the target area. The present results provide an important geochronological constraint on the geological evolution of Qinghai-Tibet Plateau. | DUO Ji WEN ChunQi GUO JianCi FAN XiaoPing LI XiaoWen | 2007 | Chinese Science Bulletin2007，52，1： | 11 |
| 5 | Extraction of Lithium from Salt Lake Brine with Triisobutyl Phosphate in Ionic Liquid and Kerosene显示文摘 | GAO Daolin YU Xiaoping GUO Yafei WANG Shiqiang LIU Mingming DENG Tianlong CHEN Yuwei BELZILE Nelson | 2015 | Chemical Research in Chinese Universities2015，31，4： | 10 |
| 6 | Newborn screening with targeted sequencing:a multicenter investigation and a pilot clinical study in China显示文摘Different newborn screening(NBS) programs have been practiced in many countries since the 1960 s. It is of considerable interest whether next-generation sequencing is applicable in NBS. We have developed a panel of 465 causative genes for 596 early-onset, relatively high incidence, and potentially actionable severe inherited diseases in our Newborn Screening with Targeted Sequencing(NESTS) program to screen 11,484 babies in 8 Women and Children’s hospitals nationwide in China retrospectively. The positive rate from preliminary screening of NESTS was 7.85%(902/11,484). With 45.89%(414/902) follow-up of preliminary positive cases, the overall clinically confirmative diagnosis rate of monogenic disorders was 12.07%(50/414), estimating an average of 0.95%(7.85% × 12.07%) clinical diagnosis rate, suggesting that monogenic disorders account for a considerable proportion of birth defects. The disease/gene spectrum varied in different regions of China. NESTS was implemented in a hospital by screening 3923 newborns to evaluate its clinical application. The turn-around time of a primary report, including the sequencing period of < 7 days, was within 11 days by our automatic interpretation pipeline. Our results suggest that NESTS is feasible and cost-effective as a first-tier NBS program, which will change the status of current clinical practice of NBS in China. | Chanjuan Hao Ruolan Guo Xuyun Hu Zhan Qi Qi Guo Xuanshi Liu Yuanhu Liu Yanhua Sun Xiaofen Zhang Feng Jin Xiujie Wu Ren Cai Dingyuan Zeng Xijiang Hu Xiaohua Wang Xiaoping Ji Wenjie Li Quansheng Xing Lanfang Mu Xiulian Jiang Xue Yang Weimin Yang Yan Zhang Qianli Yin Xin Ni Wei Li | 2022 | Journal of Genetics and Genomics2022，49，1： | 7 |
| 7 | Field test of HTS receivers on CDMA demonstration cluster in China显示文摘This paper presents the field test of our first demonstration cluster with five base stations (BTS) on code division multiple access (CDMA) wireless communication in China, while each BTS was installed with a high temperature superconductor (HTS) receiver. The HTS receivers have the same centre frequency of 830 MHz, a bandwidth of 13 MHz, and a noise figure (NF) of 0.9 dB. After the conventional receivers in the BTSs were replaced by the HTS receivers, a consequent drive test was carried out. A 2.35 dB decrease of the mean mobile transmit power was observed in the demonstration cluster. | WEI Bin GUO XuBo PIAO YunLong JIN ShiChao ZHANG XiaoPing GAO LongMa PENG HuiLi YIN ZheSheng CAO BiSong | 2009 | Chinese Science Bulletin2009，54，4： | 7 |
| 8 | Field trial of an HTS filter system on a CDMA base station显示文摘This paper presents the field trial results of a high temperature superconductor filter system (HTSFS) in a code division multiple access (CDMA) mobile communication base station (BTS) in Tangshan, China. The center frequency of the HTSFS is 830 MHz with 1.4% fractional bandwidth. The noise figure (NF) of the HTSFS, including connectors and cables, is 0.8 dB. The field trial results show that after the HTSFS was installed in the receiver front-end of a CDMA base station, the transmitting power of handset was decreased by 3.1 dB on average. Up to now, the HTSFS has been running steadily in the base station for more than 22 months, demonstrating the reliability and stability of the system. | YIN ZheSheng WEI Bin CAO BiSong WANG Xin GUO XuBo ZHANG XiaoPing GAO LongMa PIAO YunLong ZHU MaFeng LIANG Yong WANG Fan H. PIEL B. AMINOV F. AMINOVA M. GETTA S. KOLESOV A. KNACK N. PUPETER D. WEHLER | 2007 | Chinese Science Bulletin2007，52，2： | 7 |
| 9 | Genetically humanized pigs exclusively expressing human insulin are generated through custom endonuclease-mediated seamless engineering显示文摘Dear Editor,Type1diabetes(T1D)isa lifelong(chronic)disease and a major health problem throughout the world.This disease can be treatedby either insulin injection or islet transplantation.Islet transplantation is considered as a better treatment for T1D patients,because islets can produce and release insulin at the appropriate time,resulting in tight blood glucose control. | Yi Yang Kepin Wang Han Wu Qin Jin Degong Ruan Zhen Ouyang Bentian Zhao Zhaoming Liu Yu Zhao Quanjun Zhang Nana Fan Qishuai Liu Shimei Guo Lei Bu Yong Fan Xiaofang Sun Xiaoping Li Liangxue Lai | 2016 | Journal of Molecular Cell Biology2016，8，2： | 6 |
| 10 | Study and application of temporal index technology显示文摘This paper addresses the mathematical relation on a set of periods and temporal indexing construc- tions as well as their applications. First we introduce two concepts, i.e. the temporal connection and temporal inclusion, which are equivalence relation and preorder relation respectively. Second, by study- ing some basic topics such as the division of 'large' equivalence classes and the overlaps of preorder relational sets, we propose a temporal data index model (TDIM) with a tree-structure consisting of a root node, equivalence class nodes and linearly ordered branch nodes. Third, we study algorithms for the temporal querying and incremental updating as well as dynamical management within the framework of TDIM. Based on a proper mathematical supporting, TDIM can be applied to researching some significant practical cases such as temporal relational and temporal XML data and so on. | YE XiaoPing TANG Yong CHEN LuoWu GUO Huan ZHU Jun CHEN KaiYuan | 2009 | Science in China(Series F)2009，52，6： | 6 |
| 11 | An antiretroviral regimen containing 6 months of stavudine followed by long-term zidovudine for first-fine HIV therapy is optimal in resource-limited settings: a prospective, multicenter study in China显示文摘 | Li Taisheng Guo Fuping Li Yijia Zhang Chengda Han Yang Lye Wei He Yun Lu Hongzhou Xie Jing Huang Aiqiong Li Yanling Tang Xiaoping Wang Hui Zhang Tong Gao Guiju Lei Junkang Zhang Xiaoying Wu Xinhua Sun Yongtao Bai Jinsong Luo Ling Wang Huanlmg | 2014 | Chinese Medical Journal2014，，1： | 6 |
| 12 | Effect of variable heat treatment modes on microstructures of Fe-Cr-Bcast iron alloy显示文摘The effect of heat treatment mode on the microstructure of Fe-Cr-B cast iron alloys was investigated inthis paper by comparing the difference of precipitation patterns of secondary particles after thermal cycling treatment(TCT) with those after normal heat treatment (NHT). No obvious differences were found in precipitation patterns ofsecondary particles between TCT and NHT when experimental temperature was below Ar1. However, whentemperature was over Ar1, there were significant differences, with secondary particles prominently segregated at thegrain boundaries under TCT, while the particles evenly distributed in the matrix under NHT. The reason for themicrostructure differences could be associated with the development of non-equilibrium segregation of boron duringTCT. | Guo Changqing Wang Caidong Liu Xiaoping P. M. Kelly | 2008 | China Foundry2008，5，1： | 5 |
| 13 | Identification of ExpIdentification of Expressed Resistance Gene Analogs from Peanut (Arachis hypogaea L.) Expressed Sequence Tags显示文摘Low genetic diversity makes peanut (Arachis hypogaea L.) very vulnerable to plant pathogens, causing severe yield loss and reduced seed quality. Several hundred partial genomic DNA sequences as nucleotide-binding-site leucine-rich repeat (NBS-LRR) resistance genes (R) have been identified, but a small portion with expressed transcripts has been found. We aimed to identify resistance gene analogs (RGAs) from peanut expressed sequence tags (ESTs) and to develop polymorphic markers. The protein sequences of 54 known R genes were used to identify homologs from peanut ESTs from public databases. A total of 1,053 ESTs corresponding to six different classes of known R genes were recovered, and assembled 156 contigs and 229 singletons as peanut-expressed RGAs. There were 69 that encoded for NBS-LRR proteins, 191 that encoded for protein kinases, 82 that encoded for LRR-PK/transmembrane proteins, 28 that encoded for Toxin reductases, 11 that encoded for LRR-domain containing proteins and four that encoded for TM-domain containing proteins. Twenty-eight simple sequence repeats (SSRs) were identified from 25 peanut expressed RGAs. One SSR polymorphic marker (RGA121) was identified. Two polymerase chain reaction-based markers (Ahsw-1 and Ahsw-2) developed from RGA013 were homologous to the Tomato Spotted Wilt Virus (TSWV) resistance gene. All three markers were mapped on the same linkage group AhIV. These expressed RGAs are the source for RGA-tagged marker development and identification of peanut resistance genes. | Zhanji Liu Suping Feng Manish K. Pandey Xiaoping Chen Albert K. Culbreath Rajeev K. Varshney Baozhu Guo | 2013 | Journal of Integrative Plant Biology2013，55，5： | 4 |
| 14 | A novel mosquito-borne reassortant orbivirus isolated from Xishuangbanna,China显示文摘Dear Editor,The genus Orbivirus,within the family Reoviridae,includes 22 virus species(King et al.,2011).They are distributed globally,but are particularly prevalent in Europe,Asia,and Africa.In addition,they can be transmitted by ticks or other hematophagous insect vectors,including Culicoides,mosquitoes,and sandflies(Belaga- | Shaozhen Xing Xiaofang Guo Xianglilan Zhang Qiumin Zhao Lingli Li Shuqing Zuo Xiaoping An Guangqian Pei Qiang Sun Shi Cheng Yunfei Wang Hang Fan Zhiqiang Mi Yong Huang Zhiyi Zhang Hongning Zhou Jiusong Zhang Yigang Tong | 2017 | Virologica Sinica2017，32，2： | 4 |
| 15 | Influence of nanoparticle concentrations on flow boiling heat transfer coefficients of Al_2O_3/R141b in micro heat exchanger by direct metal laser sintering显示文摘Al_2O_3/R141 b + Span-80 nanorefrigerant for 0.05 wt.% to 0.4 wt.% is prepared by ultrasonic vibration to investigate the influence of nanoparticle concentrations on flow boiling heat transfer of Al_2O_3/R141 b + Span-80 in micro heat exchanger by direct metal laser sintering. Experimental results show that nanoparticle concentrations have significantly impact on heat transfer coefficients by homogeneity test of variances according to mathematical statistics. The heat transfer performance of Al_2O_3/R141 b+ Span-80 nanorefrigerant is enhanced after adding nanoparticles in the pure refrigerant R141 b. The heat transfer coefficients of 0.05 wt.%, 0.1 wt.%, 0.2 wt.%, 0.3 wt.%and 0.4 wt.% Al_2O_3/R141 b + Span-80 nanorefrigerant respectively increase by 55.0%, 72.0%, 53.0%, 42.3% and 39.9% compared with the pure refrigerant R141 b. The particle fluxes from viscosity gradient, non-uniform shear rate and Brownian motion cause particles to migrate in fluid especially in the process of flow boiling. This migration motion enhances heat transfer between nanoparticles and fluid. Therefore, the heat transfer performance of nanofluid is enhanced. It is important to note that the heat transfer coefficients nonlinearly increase with nanoparticle concentrations increasing. The heat transfer coefficients reach its maximum value at the mass concentration of 0.1% and then it decreases slightly. There exists an optimal mass concentration corresponding to the best heat transfer enhancement. The reason for the above phenomenon is attributed to nanoparticles deposition on the minichannel wall by Scanning Electron Microscopy observation. The channel surface wettability increases during the flow boiling experiment in the mass concentration range from 0.2 wt.% to 0.4 wt.%. The channel surface with wettability increasing needs more energy to produce a bubble. Therefore, the heat transfer coefficients decrease with nanoparticle concentrations in the range from 0.2 wt.% to 0.4 wt.%. In addition, a new correlation has been proposed by fitting the experimental data considering the influence of mass concentrations on the heat transfer performance. The new correlation can effectively predict the heat transfer coefficient. | Jianyang Zhou Xiaoping Luo Cong Deng Mingyu Xie Lin Zhang Di Wu Feng Guo | 2017 | Chinese Journal of Chemical Engineering2017，25，12： | 4 |
| 16 | Post-fledging dispersal and habitat use of a reintroduced population of the Crested Ibis (Nipponia nippon)显示文摘Background: Knowledge of dispersal movement of birds and their habitat preference during the post-fledging period is fundamental to the understanding of their ecological and evolutionary processes. The Crested Ibis is now being reintroduced to protected sites within its historical range, with the goal of establishing a self-sustaining population that may eventually qualify the species for delisting.Methods: We carried out an ecological study of post-fledging dispersal and habitat use of a reintroduced population of the Crested Ibis(Nipponia nippon) from 2008 to 2012 in Ningshan County, China, by using banding and radio-telemetry methods.Results: In about two weeks(an average of 14.3 days) after fledging, the activities of the fledglings were concentrated in a range of about 100 m around their natal sites, such as the oak-pine forest patches at the edge of open habitats.During this period, fledglings were still partially dependent upon parental care and fed typically on a daily basis.Siblings increasingly became independent by mid-August and then gradually moved away from their natal sites to post-fledging dispersal locations. During the period of the post-fledging dispersal process, most juveniles moving southwest were concentrated at the mean direction(μ = 254.6°, ? = 70.5°) with a mean dispersal distance of 5.1 km.It took an average of 56.4 days to disperse from the natal territory to the first wintering area. Also, forging habitats for juvenile ibis varied with time and local conditions. For example, paddy fields were used most frequently among all habitat types, while shallow rivers just from August to October. Masson pine(Pinus massoniana) was often regarded as the roosting tree species preferred by the Crested Ibis, with the highest utilization rate among all the roosting habitat types. The juveniles of the wild population dispersed four times as far as that of the reintroduced population, but the overall pattern of post-fledging dispersal is similar for the reintroduced and wild populations.Conclusions: Our results are very useful for us to predict the distance and direction of dispersal under various landscape conditions in other released sites. The project is a good example for reintroducing endangered species to their former ranges, and will be valuable for the protection of reintroduced populations of this critically and other endangered species. | Zhiping Huo Junfeng Guo Xia Li Xiaoping Yu | 2014 | Chinese Birds2014，，1： | 4 |
| 17 | Chinese expert consensus on conversion therapy for hepatocellular carcinoma(2021 edition)显示文摘Recent advances in systemic and locoregional treatments for patients with unresectable or advanced hepatocellular carcinoma(HCC)have resulted in improved response rates.This has provided an opportunity for selected patients with initially unresectable HCC to achieve adequate tumor downstaging to undergo surgical resection,a‘conversion therapy’strategy.However,conversion therapy is a new approach to the treatment of HCC and its practice and treatment protocols are still being developed.Review the evidence for conversion therapy in HCC and develop consensus statements to guide clinical practice.Evidence review:Many research centers in China have accumulated significant experience implementing HCC conversion therapy.Preliminary findings and data have shown that conversion therapy represents an important strategy to maximize the survival of selected patients with intermediate stage to advanced HCC;however,there are still many urgent clinical and scientific challenges for this therapeutic strategy and its related fields.In order to summarize and learn from past experience and review current challenges,the Chinese Expert Consensus on Conversion Therapy for Hepatocellular Carcinoma(2021 Edition)was developed based on a review of preliminary experience and clinical data from Chinese and non-Chinese studies in this field and combined with recommendations for clinical practice.Sixteen consensus statements on the implementation of conversion therapy for HCC were developed.The statements generated in this review are based on a review of clinical evidence and real clinical experience and will help guide future progress in conversion therapy for patients with HCC. | Hui-Chuan Sun Jian Zhou Zheng Wang Xiufeng Liu Qing Xie Weidong Jia Ming Zhao Xinyu Bi Gong Li Xueli Bai Yuan Ji Li Xu Xiao-Dong Zhu Dousheng Bai Yajin Chen Yongjun Chen Chaoliu Dai Rongping Guo Wenzhi Guo Chunyi Hao Tao Huang Zhiyong Huang Deyu Li Gang Li Tao Li Xiangcheng Li Guangming Li Xiao Liang Jingfeng Liu Fubao Liu Shichun Lu Zheng Lu Weifu Lv Yilei Mao Guoliang Shao Yinghong Shi Tianqiang Song Guang Tan Yunqiang Tang Kaishan Tao Chidan Wan Guangyi Wang Lu Wang Shunxiang Wang Tianfu Wen Baocai Xing Bangde Xiang Sheng Yan Dinghua Yang Guowen Yin Tao Yin Zhenyu Yin Zhengping Yu Bixiang Zhang Jialin Zhang Shuijun Zhang Ti Zhang Yamin Zhang Yubao Zhang Aibin Zhang Haitao Zhao Ledu Zhou Wu Zhang Zhenyu Zhu Shukui Qin Feng Shen Xiujun Cai Gaojun Teng Jianqiang Cai Minshan Chen Qiang Li Lianxin Liu Weilin Wang Tingbo Liang Jiahong Dong Xiaoping Chen Xuehao Wang Shusen Zheng Jia Fan 无 | 2022 | Hepatobiliary Surgery and Nutrition2022，11，2： | 4 |
| 18 | Improving the Local Sheep in Gansu via Crossing with Introduced Sheep Breeds Dorset and Borderdale显示文摘In order to improve the meat performance of local sheep in Gansu Province,Dorset and Borderdale were introduced to crossbreed with local sheep which were Tan sheep,Small-tail Han sheep and Mongolia sheep. The offspring under different crossbreeding combinations were sampled randomly at the different growing stage to measure their growth traits so as to select optimize the crossbreeding mode. The results indicated that,for the same crossbreeding mode,the growth rate of progeny was in order F3> F2> F1; for the F3 progeny,the combinations Dorset- Borderdale- Small tail Han sheep and Dorset- Borderdale- Mongolia sheep gave a higher growth rate,with a body weight of 1. 57%,3. 17%,8. 23%,1. 15% higher in male and female individuals than the counterparts of Dorset and Tan sheep and Small tail Han sheep; for the F2 progeny,the combinations Dorset- Borderdale- Small tail Han sheep and Dorset- Borderdale- Mongolia sheep also gave a higher growth rate,with a body weight of 2. 15%,4. 53%,9. 21% and 2. 75% higher in male and female individuals than the counterparts of Dorset and Tan sheep and Small tail Han sheep; for the F1 progeny,the combination Borderdale and Small tail Han sheep assumed a higher growth rate,with a body weight of 3. 23%,6. 07%,7. 42% and 8. 66% higher in male and female individuals than the counterparts of Borderdale- Mongolia sheep and Tan sheep- Small tail Han sheep,respectively. Therefore,in the Small-tail Han sheep and Mongolia sheep producing regions,the F2 or F3progeny bred by using Dorset or Borderdale sheep as male parent to cross with local breeds,or the hybrid lambs of Small-tail Han sheep and Borderdale sheep as highly qualified commodity,would produce significant economic benefit. Moreover,the novel breeds obtained by crossing were the valuable genetic resource for breeding meat sheep. | Sun Xiaoping Liu Jianbin Zhang Wanlong Lang Xia Yang Bohui Guo Jian Feng Ruilin | 2014 | Animal Husbandry and Feed Science2014，6，5： | 3 |
| 19 | Functional analysis of three genetic disorder related PITX2 mutants显示文摘The autosome dominant disorders, ring dermoid of the cornea (RDC), iris hypolasia (IH) and Axenfeld-Rieger syndrome (ARS), are allelic disor- ders, as all three can result from mutations of the transcriptional factor PITX2. Among three disorder phenotypes, ARS is the most severe, IH is milder than ARS, and RDC is the mildest. Missense muta- tions of the PITX2 homeodomain identified in RDC (R62H), IH (R84W) and ARS patients (T68P) were introduced into PITX2 cDNA by site-directed mutagenesis. PITX2 mutant proteins expressed in eucaryotic cells were stable and localized to the nu- cleus. Analysis of these mutant PITX2 proteins by DNA-binding shift and transactivation studies dem- onstrated that the R62H had the most activity in both studies, and the R84W still retained somewhat func- tions, whereas the T68P proved to be non-functional. These results are consistent with previous hypothesis that varying amount of residual PITX2 mutant activity could underline the severity of these phenotypes. | WANG Guo LIU Xiaoping PAN Qian LIANG Desheng WU Qianling DAI Heping ZHU Feizhou XIA Kun XIA Jiahui | 2006 | Chinese Science Bulletin2006，51，2： | 3 |
| 20 | Leaf gas exchange and photosynthesis curves of Elymus nutans and Potentilla anserina under fencing and grazing conditions in the Qilian Mountains, Northwest China显示文摘Potentilla anserina L.and Elymus nutans Griseb.are dominant species in the subalpine meadows of China.Grazing is one of the most important factors that influence community structure and productivity of subalpine meadows.Understanding how grazing changes photosynthetic capability is essential for preservation and restoration of grasslands.However,information about the effects of grazing on photosynthetic capability remains inadequate.Experiments were conducted in fencing and grazing areas in the Qilian Mountains,Northwest China.The leaf gas exchange and photosynthetic curves of P.anserina and E.nutans were measured at different growth stages.Results showed that grazing decreased the values of leaf gas exchange parameters,such as net photosynthetic rate,stomatal conductance,transpiration rate,and intercellular CO2 concentration of P.anserina and E.nutans.In addition,grazing decreased the values of net photosynthetic rate-photosynthetically active radiation(PN-PAR)curve parameters,such as light-saturated net photosynthetic rate,apparent quantum efficiency,light compensation point,light saturation point,and dark respiration rate.Our results demonstrated that grazing was the primary limiting factor for photosynthesis of dominant grassland species in the study area. | LIU Junjie WANG Xiaoping GAO Yunfei RONG Zhanlei ZHANG Guangde WANG Wenbin GE Lijuan MAO Yahua GUO Zhaoxia ZHAO Chuanyan | 2019 | Journal of Arid Land2019，11，3： | 3 |
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