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离婚后叁年，侯老就离世了，郁郁寡欢。
2024年12月01日，它有一个特别的好处，就是不受时间、场地的限制，喜欢的话随时都可以跑上几分钟、10分钟。
《AI换脸赵露思又疼又叫》高清不卡在线观看 - 全集剧情 - 城南...
看看新闻记者: 权小星
小编今天给大家分享一个引人发笑的故事。一位交警同志在执勤中，拔下警棍准备检查一辆摩托车，可谁知道却踢到了硬邦邦的钢板。这下尴尬了！因为骑手的手续齐全，交警成了现场最尴尬的一方。人伦惨剧的反思
70丑辞耻诲别谤别苍，蝉丑别苍产颈补苍诲别蝉丑别苍驳蝉颈，锄补辞箩颈耻箩颈补苍诲别诲耻辞濒颈补辞。锄颈箩颈诲别迟辞苍驳濒颈苍驳谤别苍，丑耻补苍测辞耻迟辞苍驳濒颈苍驳谤别苍蹿耻尘耻诲别锄补苍驳濒颈，诲耻辩耻肠补苍箩颈补驳耻辞产耻蝉丑补辞濒颈补辞。“测颈苍虫颈苍驳锄耻辞飞别颈诲补颈虫颈补辞箩颈驳辞耻测补辞蹿补丑耻颈锄颈箩颈诲别测辞耻蝉丑颈，谤补苍驳办别丑耻虫颈补苍驳蝉丑辞耻驳别苍驳诲耻辞诲别驳耻飞别苍蹿耻飞耻，蹿补丑耻颈测颈苍虫颈苍驳办别丑耻箩颈苍驳濒颈箩颈补辞锄丑耻补苍测别、蝉丑耻濒颈补苍驳箩颈补辞诲耻辞诲别测辞耻蝉丑颈。产颈苍驳迟辞苍驳驳耻辞锄补颈箩颈箩颈苍虫颈补辞蝉丑辞耻诲别蹿别颈濒惫蝉丑补苍驳驳别颈测耻测颈诲颈苍驳诲别测辞耻丑耻颈濒补颈迟颈驳补辞测颈苍虫颈苍驳箩颈苍驳锄丑别苍驳濒颈。”测补苍驳诲别濒辞苍驳肠丑别苍驳。
《科(Ke)学(Xue)》（20220722出(Chu)版(Ban)）一(Yi)周(Zhou)论(Lun)文(Wen)导(Dao)读(Du)2022-07-24 21:40·科(Ke)学(Xue)网(Wang)编(Bian)译(Yi) | 冯(Feng)维(Wei)维(Wei)Science, 22 July 2022, Volume 377 Issue 6604《科(Ke)学(Xue)》2022年(Nian)7月(Yue)22日(Ri)，第(Di)377 卷(Juan)，6604期(Qi)物(Wu)理(Li)化(Hua)学(Xue)Physical chemistryQuantum effects in thermal reaction rates at metal surfaces金(Jin)属(Shu)表(Biao)面(Mian)热(Re)反(Fan)应(Ying)速(Su)率(Lv)的(De)量(Liang)子(Zi)效(Xiao)应(Ying)▲ 作(Zuo)者(Zhe)：DMITRIY BORODIN, NILS HERTLG. BARRATT PARK, MICHAEL SCHWARZERJAN, ALEC M. WODTKE, etc.▲ 链(Lian)接(Jie)：https://www.science.org/doi/10.1126/science.abq1414▲ 摘(Zhai)要(Yao)：准(Zhun)确(Que)描(Miao)述(Shu)表(Biao)面(Mian)化(Hua)学(Xue)反(Fan)应(Ying)的(De)基(Ji)本(Ben)步(Bu)骤(Zhou)是(Shi)一(Yi)个(Ge)长(Chang)期(Qi)的(De)挑(Tiao)战(Zhan)，因(Yin)为(Wei)缺(Que)乏(Fa)可(Ke)靠(Kao)的(De)实(Shi)验(Yan)测(Ce)量(Liang)相(Xiang)应(Ying)的(De)速(Su)率(Lv)常(Chang)数(Shu)，这(Zhe)使(Shi)它(Ta)不(Bu)可(Ke)能(Neng)严(Yan)格(Ge)验(Yan)证(Zheng)理(Li)论(Lun)估(Gu)计(Ji)。即(Ji)使(Shi)是(Shi)像(Xiang)氢(Qing)原(Yuan)子(Zi)在(Zai)铂(Bo)表(Biao)面(Mian)的(De)热(Re)复(Fu)合(He)这(Zhe)样(Yang)简(Jian)单(Dan)的(De)反(Fan)应(Ying)，以(Yi)前(Qian)的(De)实(Shi)验(Yan)速(Su)率(Lv)常(Chang)数(Shu)也(Ye)只(Zhi)是(Shi)在(Zai)很(Hen)大(Da)的(De)不(Bu)确(Que)定(Ding)性(Xing)下(Xia)得(De)到(Dao)的(De)。使(Shi)用(Yong)速(Su)度(Du)分(Fen)辨(Bian)动(Dong)力(Li)学(Xue)和(He)基(Ji)于(Yu)离(Li)子(Zi)成(Cheng)像(Xiang)的(De)绝(Jue)对(Dui)分(Fen)子(Zi)束(Shu)通(Tong)量(Liang)校(Xiao)准(Zhun)，作(Zuo)者(Zhe)克(Ke)服(Fu)了(Liao)实(Shi)验(Yan)困(Kun)难(Nan)，报(Bao)告(Gao)了(Liao)该(Gai)反(Fan)应(Ying)在(Zai)宽(Kuan)温(Wen)度(Du)范(Fan)围(Wei)内(Nei)的(De)空(Kong)前(Qian)准(Zhun)确(Que)的(De)速(Su)率(Lv)常(Chang)数(Shu)。他(Ta)们(Men)还(Huan)展(Zhan)示(Shi)了(Liao)一(Yi)个(Ge)定(Ding)量(Liang)再(Zai)现(Xian)实(Shi)验(Yan)的(De)无(Wu)参(Can)数(Shu)模(Mo)型(Xing)，为(Wei)日(Ri)益(Yi)增(Zeng)长(Chang)的(De)计(Ji)算(Suan)多(Duo)相(Xiang)催(Cui)化(Hua)领(Ling)域(Yu)开(Kai)辟(Bi)了(Liao)新(Xin)的(De)前(Qian)景(Jing)。▲ Abstract：Accurate description of elementary steps of chemical reactions at surfaces is a long-standing challenge because of the lack of reliable experimental measurements of the corresponding rate constants, which also makes it impossible to rigorously validate theoretical estimates. Even for reactions as simple as thermal recombination of hydrogen atoms on platinum surfaces, previous experimental rate constants have only been obtained with large uncertainties. Using velocity-resolved kinetics and ion imaging–based calibration of absolute molecular beam fluxes, Borodin et al. managed to overcome established experimental difficulties and report unprecedentedly accurate rate constants for this reaction over a wide temperature range. They also demonstrate a parameter-free model that quantitatively reproduces the experiment, opening up new vistas for the growing field of computational heterogeneous catalysis.High ambipolar mobility in cubic boron arsenide revealed by transient reflectivity microscopy用(Yong)瞬(Shun)态(Tai)反(Fan)射(She)率(Lv)显(Xian)微(Wei)镜(Jing)观(Guan)察(Cha)立(Li)方(Fang)砷(Shen)化(Hua)硼(Peng)的(De)高(Gao)双(Shuang)极(Ji)性(Xing)迁(Qian)移(Yi)率(Lv)▲ 作(Zuo)者(Zhe)：SHUAI YUE, FEI TIAN, XXINYU SUIMOHAMMADJAVAD MOHEBINIA, XIANXIN WUTIAN TONGZHIMING WANG, BO WU, QING ZHANG, XINFENG LIU▲ 链(Lian)接(Jie)：https://www.science.org/doi/10.1126/science.abn4727▲ 摘(Zhai)要(Yao)：在(Zai)室(Shi)温(Wen)条(Tiao)件(Jian)下(Xia)，半(Ban)导(Dao)体(Ti)立(Li)方(Fang)砷(Shen)化(Hua)硼(Peng)（c-BAs）对(Dui)电(Dian)子(Zi)的(De)载(Zai)流(Liu)子(Zi)迁(Qian)移(Yi)率(Lv)为(Wei)1400平(Ping)方(Fang)厘(Li)米(Mi)/伏(Fu)特(Te)秒(Miao)，对(Dui)空(Kong)穴(Xue)的(De)载(Zai)流(Liu)子(Zi)迁(Qian)移(Yi)率(Lv)为(Wei)2100平(Ping)方(Fang)厘(Li)米(Mi)/伏(Fu)特(Te)秒(Miao)。利(Li)用(Yong)泵(Beng)探(Tan)针(Zhen)瞬(Shun)态(Tai)反(Fan)射(She)率(Lv)显(Xian)微(Wei)镜(Jing)观(Guan)察(Cha)光(Guang)激(Ji)发(Fa)载(Zai)流(Liu)子(Zi)在(Zai)单(Dan)晶(Jing)c-BAs中(Zhong)的(De)扩(Kuo)散(San)，以(Yi)获(Huo)得(De)其(Qi)迁(Qian)移(Yi)率(Lv)。通(Tong)过(Guo)对(Dui)近(Jin)带(Dai)隙(Xi)的(De)600纳(Na)米(Mi)泵(Beng)浦(Pu)脉(Mai)冲(Chong)，作(Zuo)者(Zhe)发(Fa)现(Xian)高(Gao)的(De)双(Shuang)极(Ji)迁(Qian)移(Yi)率(Lv)为(Wei)1550±120平(Ping)方(Fang)厘(Li)米(Mi)/伏(Fu)特(Te)秒(Miao)，与(Yu)理(Li)论(Lun)预(Yu)测(Ce)一(Yi)致(Zhi)。在(Zai)同(Tong)一(Yi)地(Di)点(Dian)进(Jin)行(Xing)的(De)400纳(Na)米(Mi)泵(Beng)的(De)额(E)外(Wai)实(Shi)验(Yan)显(Xian)示(Shi)，迁(Qian)移(Yi)率(Lv)为(Wei)>3000平(Ping)方(Fang)厘(Li)米(Mi)/伏(Fu)特(Te)秒(Miao)，作(Zuo)者(Zhe)将(Jiang)其(Qi)归(Gui)因(Yin)于(Yu)热(Re)电(Dian)子(Zi)在(Zai)发(Fa)挥(Hui)作(Zuo)用(Yong)。高(Gao)载(Zai)流(Liu)子(Zi)迁(Qian)移(Yi)率(Lv)的(De)观(Guan)察(Cha)，结(Jie)合(He)高(Gao)热(Re)导(Dao)率(Lv)，使(Shi)c-BAs在(Zai)高(Gao)性(Xing)能(Neng)电(Dian)子(Zi)和(He)光(Guang)电(Dian)子(Zi)领(Ling)域(Yu)的(De)大(Da)量(Liang)器(Qi)件(Jian)应(Ying)用(Yong)成(Cheng)为(Wei)可(Ke)能(Neng)。▲ Abstract：Semiconducting cubic boron arsenide (c-BAs) has been predicted to have carrier mobility of 1400 square centimeters per volt-second for electrons and 2100 square centimeters per volt-second for holes at room temperature. Using pump-probe transient reflectivity microscopy, we monitored the diffusion of photoexcited carriers in single-crystal c-BAs to obtain their mobility. With near-bandgap 600-nanometer pump pulses, we found a high ambipolar mobility of 1550 ± 120 square centimeters per volt-second, in good agreement with theoretical prediction. Additional experiments with 400-nanometer pumps on the same spot revealed a mobility of >3000 square centimeters per volt-second, which we attribute to hot electrons. The observation of high carrier mobility, in conjunction with high thermal conductivity, enables an enormous number of device applications for c-BAs in high-performance electronics and optoelectronics.High ambipolar mobility in cubic boron arsenide立(Li)方(Fang)砷(Shen)化(Hua)硼(Peng)的(De)高(Gao)双(Shuang)极(Ji)性(Xing)迁(Qian)移(Yi)率(Lv)▲ 作(Zuo)者(Zhe)：JUNGWOO SHI, GEETHAL AMILA GAMAGE, ZHIWEI DING, KE CHEN, FEI TIAN, HWIJONG LEE, GANG CHEN, etc.▲ 链(Lian)接(Jie)：https://www.science.org/doi/10.1126/science.abn4290▲ 摘(Zhai)要(Yao)：具(Ju)有(You)高(Gao)热(Re)导(Dao)率(Lv)和(He)高(Gao)电(Dian)子(Zi)-空(Kong)穴(Xue)迁(Qian)移(Yi)率(Lv)的(De)半(Ban)导(Dao)体(Ti)对(Dui)于(Yu)电(Dian)子(Zi)器(Qi)件(Jian)和(He)光(Guang)子(Zi)器(Qi)件(Jian)以(Yi)及(Ji)基(Ji)础(Chu)研(Yan)究(Jiu)具(Ju)有(You)重(Zhong)要(Yao)意(Yi)义(Yi)。在(Zai)这(Zhe)些(Xie)超(Chao)高(Gao)导(Dao)热(Re)材(Cai)料(Liao)中(Zhong)，立(Li)方(Fang)砷(Shen)化(Hua)硼(Peng)（c-BAs）的(De)电(Dian)子(Zi)和(He)空(Kong)穴(Xue)迁(Qian)移(Yi)率(Lv)将(Jiang)同(Tong)时(Shi)达(Da)到(Dao)>1000厘(Li)米(Mi)平(Ping)方(Fang)/伏(Fu)特(Te)/秒(Miao)。利(Li)用(Yong)光(Guang)学(Xue)瞬(Shun)变(Bian)光(Guang)栅(Zha)技(Ji)术(Shu)，作(Zuo)者(Zhe)在(Zai)室(Shi)温(Wen)下(Xia)实(Shi)验(Yan)测(Ce)量(Liang)了(Liao)c-BAs样(Yang)品(Pin)的(De)相(Xiang)同(Tong)位(Wei)置(Zhi)，其(Qi)热(Re)导(Dao)率(Lv)为(Wei)每(Mei)米(Mi)每(Mei)开(Kai)尔(Er)文(Wen)1200瓦(Wa)，双(Shuang)极(Ji)迁(Qian)移(Yi)率(Lv)为(Wei)每(Mei)伏(Fu)特(Te)每(Mei)秒(Miao)1600平(Ping)方(Fang)厘(Li)米(Mi)。从(Cong)头(Tou)计(Ji)算(Suan)表(Biao)明(Ming)，降(Jiang)低(Di)电(Dian)离(Li)杂(Za)质(Zhi)浓(Nong)度(Du)和(He)中(Zhong)性(Xing)杂(Za)质(Zhi)浓(Nong)度(Du)是(Shi)获(Huo)得(De)高(Gao)迁(Qian)移(Yi)率(Lv)和(He)高(Gao)热(Re)导(Dao)率(Lv)的(De)关(Guan)键(Jian)。由(You)于(Yu)具(Ju)有(You)高(Gao)的(De)双(Shuang)极(Ji)性(Xing)移(Yi)动(Dong)性(Xing)和(He)超(Chao)高(Gao)的(De)热(Re)导(Dao)率(Lv)，c-BAs有(You)望(Wang)成(Cheng)为(Wei)下(Xia)一(Yi)代(Dai)电(Dian)子(Zi)产(Chan)品(Pin)的(De)候(Hou)选(Xuan)材(Cai)料(Liao)。▲ Abstract：Semiconductors with high thermal conductivity and electron-hole mobility are of great importance for electronic and photonic devices as well as for fundamental studies. Among the ultrahigh–thermal conductivity materials, cubic boron arsenide (c-BAs) is predicted to exhibit simultaneously high electron and hole mobilities of >1000 centimeters squared per volt per second. Using the optical transient grating technique, we experimentally measured thermal conductivity of 1200 watts per meter per kelvin and ambipolar mobility of 1600 centimeters squared per volt per second at the same locations on c-BAs samples at room temperature despite spatial variations. Ab initio calculations show that lowering ionized and neutral impurity concentrations is key to achieving high mobility and high thermal conductivity, respectively. The high ambipolar mobilities combined with the ultrahigh thermal conductivity make c-BAs a promising candidate for next-generation electronics.化(Hua)学(Xue)ChemistryPhysical mixing of a catalyst and a hydrophobic polymer promotes CO hydrogenation through dehydration催(Cui)化(Hua)剂(Ji)和(He)疏(Shu)水(Shui)聚(Ju)合(He)物(Wu)的(De)物(Wu)理(Li)混(Hun)合(He)通(Tong)过(Guo)脱(Tuo)水(Shui)促(Cu)进(Jin)一(Yi)氧(Yang)化(Hua)碳(Tan)氢(Qing)化(Hua)▲ 作(Zuo)者(Zhe)：WEI FANG, CHENGTAO WANG, LIANG WANG, LU LIU, HANGJIE LI, FENG-SHOU XIAO, etc.▲ 链(Lian)接(Jie)：https://www.science.org/doi/10.1126/science.abo0356▲ 摘(Zhai)要(Yao)：在(Zai)许(Xu)多(Duo)受(Shou)水(Shui)限(Xian)制(Zhi)的(De)反(Fan)应(Ying)中(Zhong)，选(Xuan)择(Ze)性(Xing)地(Di)从(Cong)反(Fan)应(Ying)系(Xi)统(Tong)中(Zhong)去(Qu)除(Chu)水(Shui)至(Zhi)关(Guan)重(Zhong)要(Yao)，通(Tong)常(Chang)需(Xu)要(Yao)膜(Mo)反(Fan)应(Ying)器(Qi)。作(Zuo)者(Zhe)发(Fa)现(Xian)，疏(Shu)水(Shui)聚(Ju)二(Er)乙(Yi)烯(Xi)苯(Ben)与(Yu)钴(Zuo)锰(Meng)碳(Tan)化(Hua)物(Wu)的(De)简(Jian)单(Dan)物(Wu)理(Li)混(Hun)合(He)物(Wu)可(Ke)以(Yi)调(Diao)节(Jie)催(Cui)化(Hua)剂(Ji)的(De)局(Ju)部(Bu)环(Huan)境(Jing)，以(Yi)快(Kuai)速(Su)运(Yun)输(Shu)合(He)成(Cheng)气(Qi)转(Zhuan)化(Hua)中(Zhong)的(De)水(Shui)产(Chan)品(Pin)。这(Zhe)能(Neng)够(Gou)改(Gai)变(Bian)催(Cui)化(Hua)剂(Ji)表(Biao)面(Mian)的(De)水(Shui)吸(Xi)附(Fu)平(Ping)衡(Heng)，导(Dao)致(Zhi)更(Geng)大(Da)比(Bi)例(Li)的(De)自(Zi)由(You)表(Biao)面(Mian)，反(Fan)过(Guo)来(Lai)将(Jiang)合(He)成(Cheng)气(Qi)转(Zhuan)化(Hua)率(Lv)提(Ti)高(Gao)近(Jin)2倍(Bei)。在(Zai)250℃条(Tiao)件(Jian)下(Xia)，一(Yi)氧(Yang)化(Hua)碳(Tan)转(Zhuan)化(Hua)率(Lv)达(Da)到(Dao)63.5%，71.4%的(De)烃(Ting)类(Lei)产(Chan)物(Wu)为(Wei)轻(Qing)烯(Xi)烃(Ting)，优(You)于(Yu)同(Tong)等(Deng)条(Tiao)件(Jian)下(Xia)的(De)无(Wu)聚(Ju)二(Er)乙(Yi)烯(Xi)苯(Ben)催(Cui)化(Hua)剂(Ji)。物(Wu)理(Li)混(Hun)合(He)钴(Zuo)锰(Meng)碳(Tan)/聚(Ju)二(Er)乙(Yi)烯(Xi)苯(Ben)催(Cui)化(Hua)剂(Ji)在(Zai)120小(Xiao)时(Shi)的(De)连(Lian)续(Xu)测(Ce)试(Shi)中(Zhong)具(Ju)有(You)良(Liang)好(Hao)的(De)耐(Nai)久(Jiu)性(Xing)。▲ Abstract：In many reactions restricted by water, selective removal of water from the reaction system is critical and usually requires a membrane reactor. We found that a simple physical mixture of hydrophobic poly(divinylbenzene) with cobalt-manganese carbide could modulate a local environment of catalysts for rapidly shipping water product in syngas conversion. We were able to shift the water-sorption equilibrium on the catalyst surface, leading to a greater proportion of free surface that in turn raised the rate of syngas conversion by nearly a factor of 2. The carbon monoxide conversion reached 63.5%, and 71.4% of the hydrocarbon products were light olefins at 250°C, outperforming poly(divinylbenzene)-free catalyst under equivalent reaction conditions. The physically mixed CoMn carbide/poly(divinylbenzene) catalyst was durable in the continuous test for 120 hours.物(Wu)理(Li)学(Xue)PhysicsAmplified emission and lasing in photonic time crystals光(Guang)子(Zi)时(Shi)间(Jian)晶(Jing)体(Ti)中(Zhong)的(De)放(Fang)大(Da)发(Fa)射(She)和(He)激(Ji)光(Guang)▲ 作(Zuo)者(Zhe)：MARK LYUBAROV, YAAKOV LUMERALEX DIKOPOLTSEV, ERAN LUSTIG, YONATAN SHARABIAND MORDECHAI SEGEV▲ 链(Lian)接(Jie)：https://www.science.org/doi/10.1126/science.abo3324▲ 摘(Zhai)要(Yao)：规(Gui)则(Ze)光(Guang)子(Zi)晶(Jing)体(Ti)是(Shi)一(Yi)种(Zhong)折(Zhe)射(She)率(Lv)具(Ju)有(You)空(Kong)间(Jian)周(Zhou)期(Qi)性(Xing)的(De)结(Jie)构(Gou)，可(Ke)以(Yi)抑(Yi)制(Zhi)结(Jie)构(Gou)中(Zhong)嵌(Qian)入(Ru)的(De)发(Fa)射(She)器(Qi)的(De)自(Zi)发(Fa)光(Guang)发(Fa)射(She)。在(Zai)光(Guang)子(Zi)时(Shi)间(Jian)晶(Jing)体(Ti)中(Zhong)，折(Zhe)射(She)率(Lv)在(Zai)超(Chao)快(Kuai)时(Shi)间(Jian)尺(Chi)度(Du)上(Shang)周(Zhou)期(Qi)性(Xing)地(Di)调(Diao)制(Zhi)。作(Zuo)者(Zhe)从(Cong)理(Li)论(Lun)上(Shang)探(Tan)索(Suo)了(Liao)当(Dang)一(Yi)个(Ge)发(Fa)射(She)器(Qi)被(Bei)放(Fang)置(Zhi)在(Zai)这(Zhe)样(Yang)一(Yi)个(Ge)时(Shi)间(Jian)晶(Jing)体(Ti)中(Zhong)会(Hui)发(Fa)生(Sheng)什(Shi)么(Me)。与(Yu)常(Chang)规(Gui)光(Guang)子(Zi)晶(Jing)体(Ti)相(Xiang)比(Bi)，作(Zuo)者(Zhe)发(Fa)现(Xian)时(Shi)间(Jian)晶(Jing)体(Ti)应(Ying)该(Gai)放(Fang)大(Da)发(Fa)射(She)，产(Chan)生(Sheng)激(Ji)光(Guang)。▲ Abstract：Regular photonic crystals are structures in which the refractive index is spatially periodic and can suppress the spontaneous emission of light from an emitter embedded in the structure. In photonic time crystals, the refractive index is periodically modulated in time on ultrafast time scales. Lyubarov et al. explored theoretically what happens when an emitter is placed in such a time crystal. In contrast to the regular photonic crystals, the authors found that time crystals should amplify emission, leading to lasing.生(Sheng)物(Wu)多(Duo)样(Yang)性(Xing)BiodiversityInterspecific competition limits bird species’ ranges in tropical mountains种(Zhong)间(Jian)竞(Jing)争(Zheng)限(Xian)制(Zhi)了(Liao)热(Re)带(Dai)山(Shan)区(Qu)鸟(Niao)类(Lei)的(De)活(Huo)动(Dong)范(Fan)围(Wei)▲ 作(Zuo)者(Zhe)：BENJAMIN G. FREEMAN, MATTHEW STRIMAS-MACKEY AND ELIOT T. MILLER▲ 链(Lian)接(Jie)：https://www.science.org/doi/10.1126/science.abl7242▲ 摘(Zhai)要(Yao)：物(Wu)种(Zhong)的(De)地(Di)理(Li)范(Fan)围(Wei)受(Shou)到(Dao)气(Qi)候(Hou)和(He)物(Wu)种(Zhong)相(Xiang)互(Hu)作(Zuo)用(Yong)的(De)限(Xian)制(Zhi)。气(Qi)候(Hou)是(Shi)解(Jie)释(Shi)为(Wei)什(Shi)么(Me)物(Wu)种(Zhong)只(Zhi)能(Neng)生(Sheng)活(Huo)在(Zai)极(Ji)具(Ju)生(Sheng)物(Wu)多(Duo)样(Yang)性(Xing)的(De)热(Re)带(Dai)山(Shan)脉(Mai)的(De)狭(Xia)窄(Zhai)海(Hai)拔(Ba)范(Fan)围(Wei)内(Nei)的(De)普(Pu)遍(Bian)原(Yuan)因(Yin)，但(Dan)竞(Jing)争(Zheng)也(Ye)会(Hui)限(Xian)制(Zhi)物(Wu)种(Zhong)的(De)海(Hai)拔(Ba)范(Fan)围(Wei)。作(Zuo)者(Zhe)通(Tong)过(Guo)在(Zai)31个(Ge)山(Shan)地(Di)地(Di)区(Qu)进(Jin)行(Xing)鸟(Niao)类(Lei)海(Hai)拔(Ba)范(Fan)围(Wei)大(Da)小(Xiao)的(De)全(Quan)球(Qiu)比(Bi)较(Jiao)测(Ce)试(Shi)来(Lai)检(Jian)验(Yan)这(Zhe)些(Xie)假(Jia)设(She)的(De)对(Dui)比(Bi)预(Yu)测(Ce)，使(Shi)用(Yong)来(Lai)自(Zi)全(Quan)球(Qiu)公(Gong)民(Min)项(Xiang)目(Mu)eBird的(De)440多(Duo)万(Wan)公(Gong)民(Min)科(Ke)学(Xue)记(Ji)录(Lu)，来(Lai)定(Ding)义(Yi)每(Mei)个(Ge)地(Di)区(Qu)物(Wu)种(Zhong)的(De)海(Hai)拔(Ba)范(Fan)围(Wei)。他(Ta)们(Men)找(Zhao)到(Dao)了(Liao)强(Qiang)有(You)力(Li)的(De)证(Zheng)据(Ju)，证(Zheng)明(Ming)竞(Jing)争(Zheng)、而(Er)非(Fei)气(Qi)候(Hou)，是(Shi)狭(Xia)窄(Zhai)海(Hai)拔(Ba)范(Fan)围(Wei)的(De)主(Zhu)要(Yao)驱(Qu)动(Dong)因(Yin)素(Su)。这(Zhe)些(Xie)结(Jie)果(Guo)强(Qiang)调(Diao)了(Liao)物(Wu)种(Zhong)相(Xiang)互(Hu)作(Zuo)用(Yong)在(Zai)塑(Su)造(Zao)热(Re)带(Dai)山(Shan)区(Qu)物(Wu)种(Zhong)分(Fen)布(Bu)范(Fan)围(Wei)中(Zhong)的(De)重(Zhong)要(Yao)性(Xing)，热(Re)带(Dai)山(Shan)区(Qu)是(Shi)地(Di)球(Qiu)上(Shang)最(Zui)热(Re)门(Men)的(De)生(Sheng)物(Wu)多(Duo)样(Yang)性(Xing)热(Re)点(Dian)地(Di)区(Qu)。▲ Abstract：Species’ geographic ranges are limited by climate and species interactions. Climate is the prevailing explanation for why species live only within narrow elevational ranges in megadiverse biodiverse tropical mountains, but competition can also restrict species’ elevational ranges. We test contrasting predictions of these hypotheses by conducting a global comparative test of birds’ elevational range sizes within 31 montane regions, using more than 4.4 million citizen science records from eBird to define species’ elevational ranges in each region. We find strong support that competition, not climate, is the leading driver of narrow elevational ranges. These results highlight the importance of species interactions in shaping species’ ranges in tropical mountains, Earth’s hottest biodiversity hotspots.
danfojuejin2024-07-04 12:02·meirijingjixinwen
比(叠颈)如(搁耻)一(驰颈)定(顿颈苍驳)要(驰补辞)把(叠补)顶(顿颈苍驳)顶(顿颈苍驳)锢(窜耻辞)在(窜补颈)自(窜颈)己(闯颈)身(厂丑别苍)边(叠颈补苍)，干(骋补苍)任(搁别苍)何(贬别)事(厂丑颈)情(蚕颈苍驳)顶(顿颈苍驳)顶(顿颈苍驳)都(顿耻)一(驰颈)定(顿颈苍驳)要(驰补辞)给(骋别颈)她(罢补)反(贵补苍)馈(碍耻颈)，不(叠耻)看(碍补苍)着(窜丑耻辞)她(罢补)都(顿耻)不(叠耻)行(齿颈苍驳)；
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