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| 1 | Effect of Hydrological Connectivity on Soil Carbon Storage in the Yellow River Delta Wetlands of China显示文摘Hydrological connectivity has significant effects on the functions of estuarine wetland ecosystem.This study aimed to examine the dynamics of hydrological connectivity and its impact on soil carbon pool in the Yellow River Delta,China.We calculated the hydrological connectivity based on the hydraulic resistance and graph theory,and measured soil total carbon and organic carbon under four different hydrological connectivity gradients(Ⅰ0‒0.03,Ⅱ0.03‒0.06,Ⅲ0.06‒0.12,Ⅳ0.12‒0.39).The results showed that hydrological connectivity increased in the north shore of the Yellow River and the south tidal flat from 2007 to 2018,which concentrated in the mainstream of the Yellow River and the tidal creek.High hydrological connectivity was maintained in the wetland restoration area.The soil total carbon storage and organic carbon storage significantly increased with increasing hydrological connectivity fromⅠtoⅢgradient and decreased inⅣgradient.The highest soil total carbon storage of 0‒30 cm depth was 5172.34 g/m^(2),and organic carbon storage 2764.31 g/m^(2)inⅢgradient.The hydrological connectivity changed with temporal and spatial change during 2007‒2018 and had a noticeable impact on soil carbon storage in the Yellow River Delta.The results indicated that appropriate hydrological connectivity,i.e.0.08,could effectively promote soil carbon storage. | FENG Jiuge LIANG Jinfeng LI Qianwei ZHANG Xiaoya YUE Yi GAO Junqin | 2021 | Chinese Geographical Science2021，31，2： | 4 |
| 2 | Enhanced removal of sulfonamide antibiotics from water by phosphogypsum modified biochar composite显示文摘Antibiotic pollution has become a global eco-environmental issue.To reduce sulfonamide antibiotics in water and improve resource utilization of solid wastes,phosphogypsummodified biochar composite(PMBC)was prepared via facile one-step from distillers grains,wood chips,and phosphogypsum.The physicochemical properties of PMBCwere characterized by scanning electron microscope(SEM),Fourier transform infrared spectroscopy(FTIR),Zeta potential,X-ray diffraction(XRD),etc.The influencing factors,adsorption behaviors,and mechanisms of sulfadiazine(SD)and sulfamethazine(SMT)onto PMBC were studied by batch and fixed bed column adsorption experiments.The results showed that the removal rates of SD and SMT increased with the increase of phosphogypsum proportion,while decreased with the increase of solution pH.The maximum adsorption capacities of modified distillers grain and wood chips biochars for SD were 2.98 and 4.18 mg/g,and for SMT were 4.40 and 8.91mg/g,respectively,which was 9.0–22.3 times that of pristine biochar.Fixed bed column results demonstrated that PMBC had good adsorption capacities for SD and SMT.When the solution flow rate was 2.0 mL/min and the dosage of PMBC was 5.0 g,the removal rates of SD and SMT by modified wood chips biochar were both higher than 50%in 4 hr.The main mechanisms of SD and SMT removal by PMBC are hydrogen bonding,π-πdonor-acceptor,electrostatic interaction,and hydrophobic interaction.This study provides an effective method for the removal of antibiotics in water and the resource utilization of phosphogypsum. | Zonghong Jiang Miao Chen Xinqing Lee Qianwei Feng Ning Cheng Xueyang Zhang Shengsen Wang Bing Wang | 2023 | Journal of Environmental Sciences2023，，8： | 2 |
| 3 | The effect of weak interlayer on the failure pattern of rock mass around tunnel – Scaled model tests and numerical analysis显示文摘 | Feng Huang Hehua Zhu Qianwei Xu Yongchang Cai Xiaoying Zhuang | 2012 | Tunnelling and Underground Space Technology incorporating Trenchless Technology Research2012，，： | 1 |
| 4 | The Effect of Weal Interlayer on the Failure Pattern of Rock Pattern of Rock Mass Around Tunnel 显示文摘 | Huang Feng Zhu Hehua Xu Qianwei | 2013 | Tunnelling and Underground Space Technology2013，35，： | 1 |
| 5 | Experimental study on the progressive failure and its anchoring effect of weak-broken rock vertical slope显示文摘To improve the understanding on the failure behavior and its anchoring effect of weak-broken rock slope,the rock of grade IV according to China is taken as reference prototype,and a series of model tests were carried out in laboratory.These tests can be divided into two categories,that is,with bolt reinforcement and without bolt reinforcement.In which,the stability of slope reinforced with different bolt diameter,different anchor length and different space are studied.The test results show that the collapse of slope is the combination of tension failure at the top and the compression-shearing failure at the bottom of the slope,and its failure process presents progressive characteristics.The contributions of bolt reinforcement are mainly reflected by the aspects of shear resistance,crack resistance and anti-extension.The reinforcement of blot not only can improve the vertical bearing capacity before failure,but also can reduce the vertical settlement and allow greater lateral rock wall deformation;what is more,the stress concentration degree in rock mass can be dispersed,which do help to improve the stability of slope rock mass. | Hehua ZHU Qianwei XU Wenqi DING Feng HUANG | 2011 | Frontiers of Structural and Civil Engineering2011，5，2： | 1 |
| 6 | Forward simulation of ground penetrating radar and its finite difference method waveequation migration processing显示文摘 | FENG Deshan DAI Qianwei HE Jishan | 2006 | Joumal of Central South University (Science and Technology)2006，37，2： | 1 |
| 7 | 素人艺术“入流”之争显示文摘Entering China’s art world can be a daunting task for those without an art degree or a professional network. But as “outsider art,oa category of works by non-establishment artists without formal training, gains attention in international auction houses, Chinese curators, artists, and even mental health workers see new possibilities for self-expression. | 褚司怡 FENG CANGYU LIJIE QIANWEI NIUNIU YANG MIN GUO HAIPING | 2022 | The World of Chinese2022，，6： | 0 |
| 8 | Natural forest ALS-TLS point cloud data registration without control points显示文摘Airborne laser scanning(ALS)and terrestrial laser scanning(TLS)has attracted attention due to their forest parameter investigation and research applications.ALS is limited to obtaining fi ne structure information below the forest canopy due to the occlusion of trees in natural forests.In contrast,TLS is unable to gather fi ne structure information about the upper canopy.To address the problem of incomplete acquisition of natural forest point cloud data by ALS and TLS on a single platform,this study proposes data registration without control points.The ALS and TLS original data were cropped according to sample plot size,and the ALS point cloud data was converted into relative coordinates with the center of the cropped data as the origin.The same feature point pairs of the ALS and TLS point cloud data were then selected to register the point cloud data.The initial registered point cloud data was fi nely and optimally registered via the iterative closest point(ICP)algorithm.The results show that the proposed method achieved highprecision registration of ALS and TLS point cloud data from two natural forest plots of Pinus yunnanensis Franch.and Picea asperata Mast.which included diff erent species and environments.An average registration accuracy of 0.06 m and 0.09 m were obtained for P.yunnanensis and P.asperata,respectively. | Jianpeng Zhang Jinliang Wang Feng Cheng Weifeng Ma Qianwei Liu Guangjie Liu | 2023 | Journal of Forestry Research2023，34，3： | 0 |
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