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Response of drought to climate extremes in a semi-arid inland river basin in China

Journal of Arid Land 2024年第11期16卷 1505-1521页

作者： QU Zhicheng YAO Shunyu liu dongwei School of Ecology and Environment Inner Mongolia UniversityHohhot 010021China

Against the backdrop of global warming,climate extremes and drought events have become more severe,especially in arid and semi-arid *** study forecasted the characteristics of climate extremes in the Xilin River Basin(a semi-arid inland river basin)of China for the period of 2021–2100 by employing a multi-model ensemble approach based on three climate Shared Socioeconomic Pathway(SSP)scenarios(SSP1-2.6,SSP2-4.5,and SSP5-8.5)from the latest Coupled Model Intercomparison Project Phase 6(CMIP6).Furthermore,a linear regression,a wavelet analysis,and the correlation analysis were conducted to explore the response of climate extremes to the Standardized Precipitation Evapotranspiration Index(SPEI)and Streamflow Drought Index(SDI),as well as their respective trends during the historical period from 1970 to 2020 and during the future period from 2021 to *** results indicated that extreme high temperatures and extreme precipitation will further intensify under the higher forcing scenarios(SSP5-8.5>SSP2-4.5>SSP1-2.6)in the *** SPEI trends under the SSP1-2.6,SSP2-4.5,and SSP5-8.5 scenarios were estimated as–0.003/a,–0.004/a,and–0.008/a,respectively,indicating a drier future *** the historical period(1970–2020),the SPEI and SDI trends were–0.003/a and–0.016/a,respectively,with significant cycles of 15 and 22 a,and abrupt changes occurring in 1995 and 1996,*** next abrupt change in the SPEI was projected to occur in the *** SPEI had a significant positive correlation with both summer days(SU)and heavy precipitation days(R10mm),while the SDI was only significantly positively correlated with ***,the SPEI and SDI exhibited a strong and consistent positive correlation at a cycle of 4–6 a,indicating a robust interdependence between the two *** findings have important implications for policy makers,enabling them to improve water resource management of inland river basins in arid and semi-arid areas under future

关键词： climate extremes climate change Standardized Precipitation Evapotranspiration Index(SPEI) Streamflow Drought Index(SDI) wavelet analysis multi-model ensemble Xilin River Basin

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Exploration of playa surface crusts in Qehan Lake, China through field investigation and wind tunnel experiments

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Journal of Arid Land 2023年第5期15卷 491-507页

作者： liu dongwei HAN Lijing KOU Zihan GAO Xinyu WANG Jingjing School of Ecology and Environment Inner Mongolia UniversityHohhot 010021China College of Geography and Remote Sensing Sciences Xinjiang UniversityUrumqi 830017China

Globally,many lakes are drying up,leaving exposed lakebeds where wind erosion releases dust and sand rich in salt and harmful heavy metals into the ***,understanding the characteristics and spatial distribution of playa surface crusts is important to recognize the manifestation of salt dust *** objective of this study was to explore the playa surface crust types as well as their spatial distribution and evolution of Qehan Lake in Inner Mongolia Autonomous Region,China to understand the salt dust release potential of different types of playa surface *** crust characteristics were investigated by field sampling in Qehan Lake,and playa surface crusts were further divided into five types:vegetated areas,salt crusts,clay flats,curly crusts,and *** should be noted that curly crusts were distributed in clay flats and covered only a small area in Qehan *** spatial distribution characteristics of playa surface crust types were obtained by supervised classification of remote sensing images,and the salt dust release potential of crusts was explored by the wind tunnel *** field investigation of Qehan Lake revealed that playa surface crust types had a circum-lake band distribution from the inside to the outside of this lake,which were successively vegetated areas,clay flats,salt crusts,and *** spatial distribution patterns of playa surface crust types were mainly controlled by the hydrodynamics of the playa,soil texture,and *** was a significant negative correlation between crust thickness and electrical *** results of the wind tunnel experiments showed that the initial threshold of friction wind velocity for the salt dust release was higher in clay flats(0.7–0.8 m/s)than in salt crusts(0.5–0.6 m/s).Moreover,the particle leap impact processes occurring under natural conditions may reduce this threshold *** was the main factor controlling the difference in the initial threshol

关键词： playa surface crust curly crusts salt crusts salt dust release wind tunnel experiments Qehan Lake

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In-situ warming does not change soil priming effect induced by glucose addition in a temperate forest

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Pedosphere 2024年第4期34卷 759-769页

作者： Xiaohan DONG Yunting FANG dongwei liu Xin GUAN Kai HUANG Yuqi liu Qingkui WANG Silong WANG Weidong ZHANG Huitong Experimental Station of Forest Ecology CAS Key Laboratory of Forest Ecology and ManagementInstitute of Applied EcologyShenyang 110016China University of Chinese Academy of Sciences Beijing 101408China Hunan Key Laboratory for Structure and Ecosystem Service of Subtropical Forest Huitong National Research Station of Forest EcosystemHuitong 418307China Qingyuan Forest Chinese Ecosystem Research Network(CERN) National Observation and Research StationShenyang 110016China Key Laboratory of Forest Ecology and Management Institute of Applied EcologyChinese Academy of SciencesShenyang 110016(China)f Key Laboratory of Stable Isotope Techniques and ApplicationsShenyang 110016China Key Laboratory of Terrestrial Ecosystem Carbon Neutrality Shenyang 110016China

Priming effect(PE)on soil organic carbon(SOC)decomposition caused by the addition of organic carbon(C)is an important ecological process in regulating soil C ***,most priming studies are confined to laboratory trials,while the assessment of soil PE under field conditions with variable weather conditions is *** study assessed the direct effects of glucose addition and in-situ warming on the extent of PE under field conditions in a temperate *** evaluated soil PE using 13C-glucose labelling,a simple and novel technique,based on the Keeling plot *** addition significantly enhanced native SOC decomposition and induced strong ***,the effect of in-situ warming on the extent of PE was not *** study confirms the importance of PE in regulating SOC turnover under field conditions.

关键词： lue lblling tchnquegbal wamingrmingt hppidfaty ai solganmattermineralisatn oezme respiration

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刘东卫

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世界建筑 2021年第5期 19-19,124页

作者：刘东卫中国建筑标准设计研究院有限公司刘东卫工作室

我生于1960年代,从小生活在部队大院,历经了文革时期的"非完整"中小学教育。作为恢复高考后的第四届大学生,之前连建筑学之名都没听过的情况下,在我国建筑学科史上积淀厚实的母校接受启蒙学习,至今都让我觉得不可思议。在1980年代的大... 详细信息

我生于1960年代,从小生活在部队大院,历经了文革时期的"非完整"中小学教育。作为恢复高考后的第四届大学生,之前连建筑学之名都没听过的情况下,在我国建筑学科史上积淀厚实的母校接受启蒙学习,至今都让我觉得不可思议。在1980年代的大学生涯里,充满了古都西安的华夏文明之印记,青春躁动的思想,求知若渴与催人奋进的风气。从朝气蓬勃的李家村校园到沧寂的大雁塔,先生们学识渊博的激情解疑,东楼教室忘乎所以的灯光和图书馆废寝忘食的快意,这些鲜活的画面温暖而清晰,恍如昨日。

关键词：中小学教育古都西安华夏文明大雁塔李家村文革时期部队大院求知若渴

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Spatial distribution of soil moisture,salinity and organic matter in Manas River watershed,Xinjiang,China

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Journal of Arid Land 2012年第4期4卷 441-449页

作者： Jilili ABUDUWAILI Yang TANG Mireban ABULIMITI dongwei liu Long MA State Key Laboratory of Desert and Oasis Ecology Xinjiang Institute of Ecology and Geography Chinese Academy of Sci-ences Urumqi 830011 China College of Resources and Environmental Science Xinjiang University Urumqi 830011 China Inner Mongolia University Hohhot 010021 China

With the classical statistical and geostatistical methods, the study of the spatial distribution and its in- fluence factors of soil water, salinity and organic matter was carried out for 0-70 cm soil layers in Manas River watershed. The results showed that the soil moisture data from all soil layers exhibited a normal distribution, with average values of 14.08%-21.55%. Geostatistical analysis revealed that the content of soil moisture had a moder- ate spatial autocorrelation with the ratios of nugget/sill ranging from 0.500 to 0.718, which implies that the spatial pattern of soil moisture is influenced by the combined effects of structural factors and random factors. Remarkable spatial distributions with stripped and mottled features were found for soil moisture in all different soil layers. The landform and crop planting had a relatively big influence on the spatial distribution of soil moisture; total soil salinity was high in east but low in west, and non-salinized soil and lightly salinized soil appeared at the northwest and southwest of the study area. Under the effect of reservoir leakage, the heavily salinized soils are widely distributed in the middle of the study area. The areas of the non-salinized and lightly salinized soils decreased gradually with soil depth increment, which is contrary to the case for saline soils that reached a maximum of 245.67 km2 at the layer of 50-70 cm. The types of soil salinization in Manas River watershed were classified into four classes： the sulfate, chloride-sulfate, sulfate-chloride and chloride. The sulfate salinized soil is most widely distributed in the surface layer. The areas of chloride-sulfate, sulfate-chloride, and chloride salinized soils increased gradually along with the increment of soil depth; the variation range of the average values of soil organic matter content was be- tween 7.48%-11.33%. The ratios of nugget/sill reduced gradually from 0.698 to 0.299 with soil depth increment, which shows that the conten

关键词： soil water and salt organic matter spatial distribution Manas River watershed

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Design and applicability analysis of independent double acquisition circuit of all-fiber optical current transformer

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Global Energy Interconnection 2019年第6期2卷 532-541页

作者： Songlin Gu liu Han dongwei liu Wenbin Yu Zhihong Xiao Teng Feng State Power Economic Research Institute Changping DistrictBeijing 102209P.R.China Beijing SWT Optical Smart Company Limited LangfangHebei ProvinceP.R.China Department of Electrical Engineering Harbin Institute of TechnologyHarbinHeilongjiang Province150001P.R.China

The advantages of the all-fiber optical current transformer include but are not limited to being small in size,having no magnetic saturation,exhibiting high measurement accuracy,and boasting strong electromagnetic interference ***,the high cost of the all-fiber optical transformer limits its promotion and application in *** paper proposes a design scheme of an independent double acquisition loop for the all-fiber optical current transformer based on the single optical ***,based on the closed-loop control mode and open-loop control mode,the twochannel sampling signal demand for relay protection,and the independent dual-acquisition loop design scheme of the all-fiber optical current transformer are ***,the reliability and economic feasibility of the scheme are demonstrated by an analysis of system failure and *** results show that the scheme can actualize the acquisition function of two independent all-fiber optical current transformer products on a single all-fiber current transformer in an integrated manner,which greatly reduces the cost of the all-fiber optical current transformer in engineering applications.

关键词： All-fiber optical current transformer Acquisition circuit Reliability

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Cognitive-behavioural therapy for personal recovery of patients with schizophrenia:A systematic review and meta-analysis

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General Psychiatry 2019年第4期32卷 184-196页

作者： Weiliang Wang Yuqiu Zhou Nannan Chai dongwei liu School of Nursing Daqing Campus of Harbin Medical UniversityDaqingHeilongjiangChina School of Nursing Chifeng UniversityChifengInner Mongolia Autonomous RegionChina

Background To date, cognitive-behavioural therapy (CBT) trials have primarily focused on clinical recovery;however, personal recovery is actually the fundamental aspect of the recovery process. The aim of this study was to summarise and synthesise the existing evidence regarding the effectiveness of CBT for personal recovery In patients with schizophrenia. Aim This study aimed to determine the effectiveness of CBT for personal recovery in patients with schizophrenia. Methods A systematic search of the literature in PsycINFO, PubMed, Cochrane (CENTRAL), Embase and Web of Science (SCI) was conducted to identify randomised controlled trials reporting the impact of CBT interventions on personal recovery in patients with schizophrenia. The estimated effect sizes of the main study outcomes were calculated to estimate the magnitude of the treatment effects of CBT on personal recovery. We also evaluated the CBT’s effect size at the end-of-treatment and long-term (follow-up) changes in some aspects of personal recovery. Results Twenty-five studies were included in the analysis. The effect of CBT on personal recovery was 2.27 (95% CI 0.10 to 4.45;I^2=0%;p=0.04) at post-treatment and the long-term effect size was 2.62 (95% CI 0.51 to 4.47;I^2=0%;p=0.02). During the post-treatment period, the pooled effect size of CBT was 0.01 (95% CI -0.12 to 0.15;I^2=33.0%;p>0.05) for quality of life (QoL), 0.643 (95% CI 0.056 to 1.130;I^2=30.8%;p<0.01) for psychological health-related QoL,-1.77 (95% CI -3.29 to -0.25;I^2=40%;p=0.02) for hopelessness and 1.85 (95% CI 0.69 to 3.01;I^2=41%;p<0.01) for self-esteem. We also summarised the effects of CBT on QoL (subscale scores not included in the evaluation of the pooled effect size), self-confidence and connectedness, and all results corresponded to positive effects. However, there was insufficient evidence regarding the long-term effects of CBT on personal recovery. Conclusions CBT is an effective therapy with meaningful clinical effect sizes o

关键词： Cognitive-behavioural therapy schizophrenia

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Coupling analysis of short-term weather and runoff in an arid lake basin of China

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Regional Sustainability 2021年第3期2卷 264-279页

作者： WANG Jie liu dongwei TIAN Songni HU Yuehong MA Jiali WANG Lixin School of Ecology and Environment Inner Mongolia UniversityHohhot010021China Inner Mongolia Key Laboratory of River and Lake Ecology Hohhot010021China Key Laboratory of Ecology and Resource Use of the Mongolian Plateau Ministry of Education of ChinaHohhot010021China

Changes in the weather will cause variations in the hydrological *** areas,with fragile hydrological systems,are very sensitive to changes in the weather,so the coupling analysis of short-term weather and runoff in arid areas is of great *** Daihai Lake is a closed inland lake in an arid area of *** this paper,Weather Research and Forecasting model mode-Hydrological module(WRF-HYDRO)is used to simulate the coupling of weather and hydrology in the Daihai Lake *** optimization of WRF-HYDRO is carried out to determine the optimal *** optimal WRF-HYDRO model is applied to couple the short-term weather and runoff in the Daihai Lake Basin to reproduce several rainstorm and flood *** is found that runoff infiltration parameter(REFKDT)in WRF-HYDRO is the parameter that has the most severe effect on runoff in the Daihai Lake ***-HYDRO can capture the rainstorm moment of the rainstorm events in the Daihai Lake Basin,especially the first rainstorm moment,and its simulation accuracy is ***-HYDRO has a strong ability to capture flood peak,but there is a discrepancy between WRF-HYDRO flood peak and Soil Conservation Service Curve Number(SCS-CN)calculation result at the flood peak *** northern part of Zuoyun County should guard against the occurrence of flood disaster in wet *** coupling of weatherand hydrology can not only make up for the lack of runoff data in arid basins,but also provide a basis for water resources management and disaster prevention and mitigation in the basins.

关键词： Rainfall simulation Runoff simulation WRF-HYDRO Soil Conservation Service Curve Number Flood peak Parameter calibration Daihai Lake Basin

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Review and Impression: Chinese Movies in 2005

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China & The World Cultural Exchange 2006年第5期72卷 30-36页

作者： liu Danling and Wu dongwei

The year of 2005 marked the centennial anniversary of Chinese lm. Over the past century, lm has changed people’s ways of life, in uenced their ideas and concepts and expanded their sphere of imagination. As a celebrated American critic said, film is the most typical art form of the time which has an integrated feature in both technology and society. Therefore, it takes an important responsibility to develop, restore and upgrade people’s ability to feel and experience. The year of 2005 has passed and to review Chinese movies in the past year will bring us a delightful memory.

关键词：中国百年电影史回顾代表作品电影事业电影评论

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Variations in leaf carbon isotope composition along an arid and semi-arid grassland transect in northern China

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Journal of Plant Ecology 2016年第5期9卷 576-585页

作者： Chao Wang dongwei liu Wentao Luo Yunting Fang Xiaobo Wang Xiaotao Lü Yong Jiang Xingguo Han Edith Bai Key Laboratory of Forest Ecology and Management Institute of Applied EcologyChinese Academy of SciencesShenyang 110164China

Aims We aimed to quantify the variation of leafδ^(13)C along an arid and semi-arid grassland transect in northern *** also evaluated the effects of environmental factors(***,temperature and altitude)on the spatial variation of leafδ^(13)C in northern grasslands and Tibetan Plateau,*** We sampled leaves of plant species belonging to three herb genera(Stipa spp.,Leymus *** Cleistogenes spp.)and three shrub genera(Caragana spp.,Reaumuria *** Nitraria spp.)for carbon isotope analysis from 50 locations along a 3200-km arid and semiarid grassland transect in northern ***δ^(13)C data in Tibetan Plateau and northern grasslands in China were also compiled from studies in *** Findings Along the transect,leafδ^(13)C for C_(3)plants ranged from−28.0‰to−23.3‰,and from−16.3‰to−13.8‰for C_(4)plant Cleistogenes spp..The change in leafδ^(13)C ranged from−0.26‰to−3.51‰with every 100 mm increase of annual precipitation,and leafδ^(13)C of shrubs(Nitraria spp.,Reaumuria *** Caragana spp.)responded more markedly to climatic factors(precipitation and temperature)than that of herbs(Stipa spp.,Leymus *** Cleistogenes spp.),indicating higher sensitivity of shrubδ^(13)C to climatic *** most important factor regulating spatial variations of leafδ^(13)C in Tibetan Plateau was altitude,while it was precipitation in northern *** results suggested that shrubs are more adapted to increasing drought in arid and semi-arid *** of environmental factors on leafδ^(13)C depended on the most limiting factors in arid grassland(precipitation)and Tibetan grasslands(atmospheric CO_(2)concentration).

关键词： carbon isotope water use efficiency plant life-form rainfall gradient climate change

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