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| 1 | Estimation of the quantity of aeolian saltation sediments blown into the Yellow River from the Ulanbuh Desert,China显示文摘The Ulanbuh Desert borders the upper reach of the Yellow River.Every year,a mass of aeolian sand is blown into the Yellow River by the prevailing wind and the coarse aeolian sand results in serious silting in the Yellow River.To estimate the quantity of aeolian sediments from the Ulanbuh Desert blown into the Yellow River,we simulated the saltation processes of aeolian sediments in the Ulanbuh Desert.Then we used a saltation submodel of the IWEMS(Integrated Wind-Erosion Modeling System)and its accompanying RS(Remote Sensing)and GIS(Geographic Information System)modules to estimate the quantity of saltation sediments blown into the Yellow River from the Ulanbuh Desert.We calibrated the saltation submodel by the synchronous observation to wind velocity and saltation sediments on several points with different vegetation cover.The vegetation cover,frontal area of vegetation,roughness length,and threshold friction velocity in various regions of the Ulanbuh Desert were obtained using NDVI(Normalized Difference Vegetation Index)data,measured sand-particle sizes,and empirical relationships among vegetation cover,sand-particle diameters,and wind velocity.Using these variables along with the observed wind velocities and saltation sediments for the observed points,the saltation model was validated.The model results were shown to be satisfactory(RMSE less than 0.05 and|Re|less than 17%).In this study,a subdaily wind-velocity program,WINDGEN,was developed using this model to simulate hourly wind velocities around the Ulanbuh Desert.By incorporating simulated hourly wind-velocity and wind-direction data,the quantity of saltation sediments blown into the Yellow River was calculated with the saltation submodel.The annual quantity of aeolian sediments blown into the Yellow River from the Ulanbuh Desert was 5.56×106t from 2001 to 2010,most of which occurred in spring(from March to May);for example,6.54×105tons of aeolian sand were blown into the Yellow River on 25 April,2010.However,in summer and winter,the saltation process occasionally occurred.This research has supplied some references to prevent blown sand hazards and silting in the Yellow River. | HeQiang DU Xian XUE Tao WANG | 2014 | Journal of Arid Land2014，6，2： | 11 |
| 2 | Oasis Functional Stability Evaluation Based on Multiple Indicators, Northwest China显示文摘We produced and analyzed oasis structure information, and evaluated oasis functional stability using the multiple indicators based on Remote Sensing(RS) and Geographical Information System(GIS) in the arid region of China in 2015. The results showed that the oases area was 193,734 km^2, accounting for 8.17% of the arid region of China. The spatial difference in the functional stability of oases was obvious. The Beijiang zone had the highest functional stability and was relatively stable state, and the Hexi Corridor-Alashan Plateau zone had the lowest functional stability and was relatively unstable. The functional stability is dominated by production and ecological functions, which have regional differences. Increasing oasis agricultural output, strengthening highway infrastructure construction and paying attention to education will become important ways to improve oasis functional stability. Water resources determine the ecological function, thus affecting the oasis functional stability. The results provide references for the formulation of related policies according to local conditions. | LI Sen ZHANG Zhishan WANG Tao YAN Changzhen DU Heqiang | 2020 | Acta Geologica Sinica(English Edition)2020，94，3： | 3 |
| 3 | Heterologous expression of Hp BHY and Cr BKT increases heat tolerance in Physcomitrella patens显示文摘Heat stress can restrict plant growth,development,and crop yield.As essential plant antioxidants,carotenoids play significant roles in plant stress resistance.b-carotene hydroxylase(BHY)and b-carotene ketolase(BKT),which catalyze the conversions of b-carotene to zeaxanthin and b-carotene to canthaxanthin,respectively,are key enzymes in the carotenoid biosynthetic pathway,but little is known about their potential functions in stress resistance.Here,we investigated the roles of b-carotene hydroxylase and b-carotene ketolase during heat stress in Physcomitrella patens through expressing a b-carotene ketolase gene from Chlamydomonas reinhardtii(Cr BKT)and a b-carotene hydroxylase gene from Haematococcus pluvialis(Hp BHY)in the moss P.patens.In transgenic moss expressing these genes,carotenoids content increased(especially lutein content),and heat stress tolerance increased,with reduced leafy tissue necrosis.To investigate the mechanism of this heat stress resistance,we measured various physiological indicators and found a lower malondialdehyde level,higher peroxidase and superoxide dismutase activities,and higher endogenous abscisic acid and salicylate content in the transgenic plants in response to high-temperature stress.These results demonstrate that Cr BKT and Hp BHY increase plant heat stress resistance through the antioxidant and damage repair metabolism,which is related to abscisic acid and salicylate signaling. | Jianfang He Ping Li Heqiang Huo Lina Liu Ting Tang Mingxia He Junchao Huang Li Liu | 2019 | Plant Diversity2019，41，4： | 2 |
| 4 | Numerical simulations of flow and sediment transport within the Ning-Meng reach of the Yellow River,northern China显示文摘Effective management of a river reach requires a sound understanding of flow and sediment transport generated by varying natural and artificial runoff conditions. Flow and sediment transport within the Ning-Meng reach of the Yellow River(NMRYR), northern China are controlled by a complex set of factors/processes, mainly including four sets of factors:(1) aeolian sediments from deserts bordering the main stream;(2) inflow of water and sediment from numerous tributaries;(3) impoundment of water by reservoir/hydro-junction; and(4) complex diversion and return of irrigation water. In this study, the 1-D flow & sediment transport model developed by the Yellow River Institute of Hydraulic Research was used to simulate the flow and sediment transport within the NMRYR from 2001 to 2012. All four sets of factors that primarily control the flow and sediment transport mentioned above were considered in this model. Compared to the measured data collected from the hydrological stations along the NMRYR, the simulated flow and sediment transport values were generally acceptable, with relative mean deviation between measured and simulated values of <15%. However, simulated sediment concentration and siltation values within two sub-reaches(i.e., Qingtongxia Reservoir to Bayan Gol Hydrological Station and Bayan Gol Hydrological Station to Toudaoguai Hydrological Station) for some periods exhibited relatively large errors(the relative mean deviations between measured and simulated values of 18% and 25%, respectively). These errors are presumably related to the inability to accurately determine the quantity of aeolian sediment influx to the river reach and the inflow of water from the ten ephemeral tributaries. This study may provide some valuable insights into the numerical simulations of flow and sediment transport in large watersheds and also provide a useful model for the effective management of the NMRYR. | DOU Shentang YU Xin DU Heqiang ZHANG Fangxiu | 2017 | Journal of Arid Land2017，9，4： | 2 |
| 5 | The salt-activated CBF1/CBF2/CBF3-GALS1 module fine-tunes galactan-induced salt hypersensitivity in Arabidopsis显示文摘Plant growth and development are significantly hampered in saline environments,limiting agricultural productivity.Thus,it is crucial to unravel the mechanism underlying plant responses to salt stress.β-1,4-Galactan(galactan),which forms the side chains of pectic rhamnogalacturonan I,enhances plant sensitivity to high-salt stress.Galactan is synthesized by GALACTAN SYNTHASE1(GALS1).We previously showed that Na Cl relieves the direct suppression of GALS1 transcription by the transcription factors BPC1 and BPC2 to induce the excess accumulation of galactan in Arabidopsis(Arabidopsis thaliana).However,how plants adapt to this unfavorable environment remains unclear.Here,we determined that the transcription factors CBF1,CBF2,and CBF3 directly interact with the GALS1 promoter and repress its expression,leading to reduced galactan accumulation and enhanced salt tolerance.Salt stress enhances the binding of CBF1/CBF2/CBF3 to the GALS1 promoter by inducing CBF1/CBF2/CBF3 transcription and accumulation.Genetic analysis suggested that CBF1/CBF2/CBF3 function upstream of GALS1 to modulate salt-induced galactan biosynthesis and the salt response.CBF1/CBF2/CBF3 and BPC1/BPC2 function in parallel to regulate GALS1 expression,thereby modulating the salt response.Our results reveal a mechanism in which salt-activated CBF1/CBF2/CBF3 inhibit BPC1/BPC2-regulated GALS1 expression to alleviate galactan-induced salt hypersensitivity,providing an activation/deactivation fine-tune mechanism for dynamic regulation of GALS1 expression under salt stress in Arabidopsis. | Jingwei Yan Ya Liu Jiawen Yan Zhihui Liu Heqiang Lou Jiasheng Wu | 2023 | Journal of Integrative Plant Biology2023，65，8： | 2 |
| 6 | Estimation of saltation emission in the Kubuqi Desert, North China显示文摘 | Du Heqiang Xue Xian Wang Tao | 2014 | Science of the Total Environment2014，2014，47： | 1 |
| 7 | Effects of eccentric phase difference between two discs on oil-film instability in a rotor–bearing system显示文摘 | Hui Ma Hui Li Xueyan Zhao Heqiang Niu Bangchun Wen | 2013 | Mechanical Systems and Signal Processing2013，，： | 1 |
| 8 | Nonlinear dynamic analysis of a rotor-bearing-seal system under two loading condi-tions显示文摘 | Ma Hui Li Hui Niu Heqiang | 2013 | Journal of Sound and Vibrtion2013，332，23： | 1 |
| 9 | Dried jujube classification using support vector machine based on fractal parameters and red,green and blue intensity显示文摘 | Lou Heqiang Hu Ya Wang Bin | | 0，，09： | 1 |
| 10 | Hierarchical least-squares based iterative identification for multivariable systems with moving average noises 显示文摘 | HAN Heqiang XIE Li DING Feng | 2010 | Mathematical and Computer Modelling2010，51，910： | 1 |
| 11 | 显示文摘 | HEQiang TANGJun-jie WANGFei etal(何强 唐俊杰 王霏 等) | 2014 | 高压物理学报2014，28，2： | 1 |
| 12 | Using neural networks to estimate the losses of ascorbic acid,total phenols,flavonoid,and antioxidant activity in asparagus during thermal treatments显示文摘 | HONGFEI L HONG Z HEQIANG L | 2010 | Journal of Agricultural and Food Chemistry2010，58，10： | 1 |
| 13 | Using Neural Networks to Estimate the Losses of Ascorbic Acid, Total Phenols, Flavonoid, and Antioxidant Activity in Asparagus during Thermal Treatments 显示文摘 | Hongfei L Hong Z Heqiang L | 2010 | Journal of Agricultural and Food Chemistry2010，58，10： | 1 |
| 14 | Jujube classification using support vector machine based on fractal parameters and red,green and blue intensity显示文摘 | Lou Heqiang Hu Ya Wang Bin | | 0，，09： | 1 |
| 15 | Bruise detection on red bayberry using fractal analysis and support vector machine显示文摘 | Lü Hongfei Zheng Hong Lou Heqiang | | 0，，01： | 1 |
| 16 | 显示文摘 | LIChun-yan(李春艳) KONGXiang-hong(孔祥虹) HEQiang etal(何强等) | | 中国食物与营养0，，： | 1 |
| 17 | Larval identification of lutjanus bloch in nansha coral reefs by AFLP molecular method显示文摘 | Junbin Zhanga Liangmin Huanga Heqiang Huo | 2004 | Journal of Experimental Marine Biology and Ecology2004，，298： | 1 |
| 18 | 显示文摘 | HEQiang KONGXiang-hong ZHAOJie etal(何强 孔祥虹 赵洁 等) | 2008 | 色谱2008，26，5： | 1 |
| 19 | Numerical and experimental analysis of the first-and second-mode instability in a rotor-beating system显示文摘 | MA Hui LI Hui NIU Heqiang | 2014 | Archive of Applied Mechanics2014，84，4： | 1 |
| 20 | Larval identification of lutjanus bloch in nansha coral reefs by AFLP molecular method显示文摘 | Zhang Junbin Huang Liangmin Huo Heqiang | 2004 | Journal of experimental marine biology and ecology2004，298，1： | 1 |
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