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Journal of Forestry Research 2024年第3期35卷 175-188页

作者： Niu Zhu Jinniu wang Dongliang Luo xufeng wang Cheng Shen Ning Wu Ning Zhang Binghui Tian Aihong Gai Chengdu Institute of Biology Chinese Academy of SciencesChengdu 610041People's Republic of China College of Resources and Environmental Sciences Gansu Agricultural UniversityLanzhou 730070People's Republic of China Mangkang Ecological Monitoring Station Tibet Ecological Security Barrier Ecological Monitoring NetworkQamdo 854500People's Republic of China Northwest Institute of Eco Environmental Resources Chinese Academy of SciencesLanzhou 730000People's Republic of China

Evapotranspiration is an important parameter used to characterize the water cycle of *** under-stand the properties of the evapotranspiration and energy balance of a subalpine forest in the southeastern Qinghai-Tibet Plateau,an open-path eddy covariance system was set up to monitor the forest from November 2020 to October 2021 in a core area of the Three Parallel Rivers in the Qing-hai-Tibet *** results show that the evapotranspira-tion peaked daily,the maximum occurring between 11:00 and 15:*** factors had significant effects on evapotranspiration,among them,net radiation the greatest(R^(2)=0.487),and relative humidity the least(R^(2)=0.001).The energy flux varied considerably in different seasons and sensible heat flux accounted for the main part of turbulent *** energy balance ratio in the dormant season was less than that in the growing season,and there is an energy imbalance at the site on an annual time scale.

关键词： Evapotranspiration Energy balance Subalpine forest Three Parallel Rivers region Southeast Qinghai-Tibet Plateau

Dynamic evolution characteristics of mining-induced fractures in overlying strata detected by radon

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Nuclear Science and Techniques 2011年第6期22卷 334-337页

作者： ZHANG Wei ZHANG Dongsheng MA Liqiang wang xufeng FAN Gangwei State Key Laboratory of Coal Resources and Safe Mining School of Mines China University of Mining ＆ Technology Xuzhou 221116 China College of Geology and Exploration Engineering Xinjiang University Urumchi 830046 China

For environment protection in mining areas in northwest China,we developed a CTSRM(comprehensive test system by radon measurement) to measure radon radioactivity and detect dynamic evolution characteristics of mining-induced fractures in overlying *** was used to simulate the relationship between the dynamic evolution characteristics and radon concentrations of 33201~# coalface at Bulianta coal mine in Inner Mongolia,and feasibility of the method was validate.

关键词：演化特征上覆岩层骨折采矿测氡中国西北地区综合测试系统氡气测量

Impact of agricultural residual plastic film on the growth and yield of drip-irrigated cotton in arid region of Xinjiang, China

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International Journal of Agricultural and Biological Engineering 2020年第1期13卷 160-169页

作者： Can Hu xufeng wang Shiguo wang Bing Lu Wensong Guo Chaoji Liu Xiuying Tang College of Engineering China Agricultural UniversityBeijing 100083China College of Mechanical and Electrical Engineering Tarim UniversityAlar 843300XinjiangChina Xinjiang Academy of Agricultural and Reclamation Science Mechanical Equipment Research Institute Shihezi 832000China

Long-term and widespread use of plastic mulching has led to the accumulation of residual plastic film(RPF)in farmland soils of Xinjiang,***,there is no specific quantitative basis for RPF pollution or a clear understanding of the influence of residual film on crop *** aim of this study was to investigate the effect of RPF on the growth of cotton,an important cash crop of *** on the field conditions and previous reports,various amount of residual film was applied in 0-30 cm soil *** growth index including emergence rate,dry matter,and yield of cotton was examined at different growth stages under different soil residual film *** demonstrated a significant effect of RPF on soil moisture distribution and *** residues had a significant effect on cotton growth at levels above 200 kg/hm2,and the yield decreased as the RPF amount *** on these findings,200 kg/hm2 was suggested as a threshold level to determine the effects of RPF on *** study provided a basis to rate RPF pollution in farmland soils and help understand the impact of pollution on crop productivity.

关键词： residual plastic film plastic film pollution soil pollution pollution control cotton production management

Separation and mechanical properties of residual film and soil

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International Journal of Agricultural and Biological Engineering 2023年第1期16卷 184-192页

作者： Yu Ren Wensong Guo xufeng wang Can Hu Long wang Xiaowei He Jianfei Xing College of Mechanical and Electrical Engineering Tarim UniversityAlar 843300XinjiangChina Modern Agricultural Engineering Key Laboratory at Universities of Education Department of Xinjiang Uygur Autonomous Region Tarim UniversityAlar 843300XinjiangChina

In Xinjiang's perennial cotton(Gossypium hirsutum)-planting soil,the average residual amount of plastic film is as high as 265.3 kg/hm2,and the problem of pollution with residual plastic film in the tillage layer has become a major *** explore the mechanism of the separation of residual film and soil in the tillage layer and determine the conditions favorable for the separation of residual film-soil,this study established a constitutive model of residual film-soil contact based on the discrete element method and used the established constitutive model to simulate the process of separating residual film and *** addition,the influence of parameters,such as soil particle size and water content,on the force to separate the residual film and soil was studied using single factor and orthogonal *** simulation results showed that the changing trend of the residual film-soil separation force curve did not differ much between the simulation and the actual comparison,and the curves were roughly the *** all decreased after the separation force reached its peak value,but the simulated separation force curve was similar to that of the actual separation *** increased rapidly from the beginning and reached peak separation force *** single-factor experiment showed that the separation force of the used residual mulching film was higher than that of the unused mulching *** the same conditions,the maximum separation force required to separate the residual membrane was proportional to the positive pressure on the surface of the residual membrane and the size of soil *** the same conditions,the maximum separation force required to separate the residual film is proportional to the positive pressure on the surface of the residual film and the size of soil *** maximum separation force decreased first and then increased as the soil moisture content *** results of the orthogonal experiment showed that the soil part

关键词： residual mulching film soil separation discrete element simulation sandy soil

Distribution of microplastics in mulched soil in Xinjiang, China

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International Journal of Agricultural and Biological Engineering 2021年第2期14卷 196-204页

作者： Can Hu Bing Lu Wensong Guo Xiuying Tang xufeng wang Yinghao Xue Long wang Xiaowei He College of Mechanical and Electrical Engineering Tarim UniversityAlar 843300XinjiangChina College of Engineering China Agricultural UniversityBeijing 100083China Rural Energy and Environment Agency Ministry of Agriculture and Rural AffairsBeijing 100125China

In order to study the distribution of soil microplastics in the plastic film mulched farmland,the fluidization-centrifugation secondary density flotation method was optimized and improved to obtain the *** main components of microplastics were analyzed by Fourier spectrometer,and the surface morphology,porosity,particle size and abundance distribution characteristics of microplastics were studied by electron *** results showed that plastic mulch is the main source of *** morphology mainly consists of fragments,fibers and *** size of debris microplastics was larger,with an average of 1.6300 mm,mainly distributed in the 0-300 mm cultivation layer while the size of particle micro plastic was smaller,with an average of 0.1400 *** width of fiber microplastic was 5-20μm,but the length could reach 0.2000-2.0000 mm,with an average particle size of 0.9200 *** and granular microplastics could be seen in each soil *** surface layer of microplastics has a large number of pores characterized with a length of 50μm and a width of about 5-10μm,which might be an easy oxidation site for *** oxidation is continuous,making microplastics continuously decompose into smaller *** abundance of microplastics is negatively correlated with soil *** average abundance of microplastics is 161.50±5.20 pieces/100 g in 0-300 mm soil layer,which is their main enrichment ***,the average abundance of microplastics decreases to 11.20±1.10 pieces/100 g in 400-800 mm soil ***,the average particle size of microplastics is also linearly negatively correlated with soil *** with smaller particle size are easier to migrate as they pass through soil pores under the action of water and *** research can provide s reference for understanding plastic mulch pollution.

关键词： soil microplastics plastic pollution distribution composition

Distribution characteristics of plastic film residue in long-term mulched farmland soil

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Soil Ecology Letters 2023年第3期5卷 25-35页

作者： Zhengxin Xu Can Hu xufeng wang Long wang Jianfei Xing Xiaowei He Zaibin wang Pengfei Zhao College of Mechanical and Electrical Engineering Tarim UniversityAlar 843300China Modern Agricultural Engineering Key Laboratory at Universities of Education Department of Xinjiang Uygur Autonomous Region Alar843300China College of Engineering China Agricultural UniversityBeijing 100083China

Soil contamination from film debris following the prolonged application of mulching film has emerged as a worldwide ***,the extent that mulching films contribute to soil microplastics,and the spatial distribution of soil contamination from film debris remain *** this study,the cotton field in Xinjiang(China),which underwent film mulching for a prolonged period of 5−30 years,was selected as the research location.A total of 360 soil samples were collected,aiming to study the spatial distribution characteristics of mulching film debris *** samples were extracted using the density flotation method combined with stereomicroscopic;the source,composition,abundance,and distribution characteristics of soil MPs were identified by the scanning electron microscopic,and Fourier transform infrared spectroscopic *** soil mulched for a 30 year period,the abundance of microplastics across the studied soil depth(0−60 cm)was 78.51±2.57 n/(100 g).Theμ-FTIR analyses revealed that the composition of the microplastics matched that of polyethylene ***,plastic mulching could be inferred as a major contributor to microplastic pollution in agricultural ***,it is necessary to study the distribution characteristics of plastic film remaining for further study of plastic pollution in farmland soils.

关键词： Film mulching Soil contamination Film debris Microplastics Long-term exposure

Alpha5 nicotine acetylcholine receptor subunit promotes intrahepatic cholangiocarcinoma metastasis

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Signal Transduction and Targeted Therapy 2024年第4期9卷 1690-1705页

作者： Yan Fu Keyu Shen Hao wang Shun wang xufeng wang Le Zhu Yan Zheng Tiantian Zou Hongfei Ci Qiongzhu Dong Lun-Xiu Qin Hepatobiliary Surgery Department of General SurgeryHuashan Hospital&Cancer Metastasis InstituteFudan University200040 ShanghaiChina Center of Interventional Radiology and Vascular Surgery Department of RadiologyZhongda HospitalMedical SchoolSoutheast University87 Dingjiaqiao Road210009 NanjingChina institutes of Biomedical Sciences Fudan University200032 ShanghaiChina Key Laboratory of Whole-period Monitoring and Precise Intervention of Digestive Cancer Shanghai Municipal Health CommissionMinhang HospitalFudan UniversityShanghaiChina

Neurotransmitter-initiated signaling pathway were reported to play an important role in regulating the malignant phenotype of tumor *** cells could exhibit a"neural addiction"property and build up local nerve networks to achieve an enhanced neurotransmitter-initiated signaling through nerve growth factor-mediated *** the dysregulated nervous systems might represent a novel strategy for cancer ***,whether intrahepatic cholangiocarcinoma(ICC)could build its own nerve networks and the role of neurotransmitters in the progression ICC remains largely *** staining and Enzyme-linked immunosorbent assay suggested that IcC cells and the infiltrated nerves could generate a tumor microenvironment rich in acetylcholine that promotes IcC metastasis by inducing epithelial-mesenchymal transition(EMT).Acetylcholine promoted iCC metastasis through interacting with its receptor,alpha 5 nicotine acetylcholine receptor subunits(CHRNA5).Furthermore,acetylcholine/CHRNA5 axis activated GSK3β/β-catenin signaling pathway partially through the influx of Ca^(2+)-mediated activation of Ca/calmodulin-dependent protein kinases(CAMKll).In addition,acetylcholine signaling activation also expanded nerve infiltration through increasing the expression of Brain-Derived Neurotrophic Factor(BDNF),which formed a feedforward acetylcholine-BDNF axis to promote ICC ***93,a small-molecule inhibitor of CAMKIll,significantly inhibited the migration and enhanced the sensitivity to gemcitabine of ICC *** all,Acetylcholine/CHRNA5 axis increased the expression ofβ-catenin to promote the metastasis and resistance to gemcitabine of ICC via CAMKIl/GSK3βsignaling,and the CAMKIl inhibitor KN93 may be an effective therapeutic strategy for combating ICC metastasis.

关键词： GSK3β metastasis Alpha

Hangzhou's Gardens and Manors

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China Book International 2023年第3期 20-23页

作者： wang xufeng College of Tea Science and Tea Culture the Chinese International Promotion Tea Culture Communication Base China International Tea Culture Institute of Zhejiang A&F University

The tourism industry of Hangzhou West Lake in the Qing Dynasty was said to have developed into the tourism of *** West Lake itself is a large *** is certainly not enough for a garden to have only lakes and mountains.

关键词： mountains Hangzhou enough

Environmental suitability evaluation for human settlements in an arid inland river basin： A case study of the Shiyang River Basin

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Journal of Geographical Sciences 2013年第2期23卷 331-343页

作者： WEi Wei SHI Peiji ZHOU Junju FENG Haichun wang xufeng wang Xueping CollegeofEarthandEnvironmentalSciences NorthwestNormalUniversityLanzhou730070China ColdandAridRegionsEnvironmentalandEngineeringResearchInstitute CASLanzhou730000China SchoolofCivilEngineering LanzhouUniversityofTechnolog~Lanzhou730050China

The study employs slope, aspect, relief degree of land surface, land use, vegetation index, hydrology and climate, as evaluation indexes to set up the Human Settlements Environmental Index （HEI） model to evaluate the environmental suitability for human settlements in the Shiyang River Basin. By using GIS spatial analysis technology, such as spatial overlay analysis, buffer analysis and density analysis, the environmental suitability of the human set- tlement spatial situation and spatial pattern are established to analyze their spatial distribution The results show that the index of suitability for human settlements in the Shiyang River Basin is between 17.13 and 84.32. In general, suitability for human settlements decreases from the southwest to the northeast. Seen from an area pattern, the suitable region is mainly distributed in the Minqin oasis, Wuwei oasis and Changning basin, which are about 1080.01 km2 and account for 2.59% of the total area. Rather and comparatively suitable region is mainly distributed around the counties of Gulang, Yongchang and north of Tianzhu, which is about 1100.30 km2. The common suitable region is mainly distributed outside the counties of Yongchang, Jinchuan and most parts of Minqin County, which are about 23328.04 km2, accounting for 56.08% of the total area. The unsuitable region is mainly distributed upstream and to the north of the river, which is about 9937.60 km2, accounting for 23.89% of the total area. Meanwhile, the least suitable region is distributed around the Qilian Mountains, which are covered by snow and cold desert and lie in the intersecting area between the Tengger Desert and Badain Jaran Desert. The total area is about 6154.05 km2, accounting for 14.79% of the total area. Suitable regions for human habitation are mainly distributed around rivers in the form of ribbons and batches, while others are scattered. The distribution pattern is iden- tical to the residential spatial pattern. In addition, the relationships

关键词： geographic information systems suitability for human settlement arid inland area Shiyang RiverBasin