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| 1 | Effects of biochar amendments on soil water retention characteristics of red soil at south China显示文摘Biochar has been extensively used for the improvement of soil water retention.However,the effects of various biochars were not well determined.The objectives of this study were to investigate the effects of three biochars[biochars made from bamboo(Bambusaceae),rice straw(Oryza sativa),and tobacco stem(Nicotiana L.)]on soil physical properties and the water retention characteristics of red soil at southeast China.The air-dried soil samples were mixed with ratios of 2%,5%,and 10%(w w^(−1))BC(bamboo biochar),RC(rice straw biochar),and TC(tobacco biochar),respectively,and evaluated for changes in soil bulk density(BD),soil saturated water content,field capacity,capillary porosity and soil hygroscopic coefficient.The results showed that BD decreased significantly with the application of the three types of biochar,total soil porosity and capillary porosity increased with the increase of the biochar ratio.The soil hygroscopic coefficient,wilting moisture capacity,saturated water content,and field capacity were significantly affected by the application of the three types of biochar.Compared with the other two treatments,the BC showed the best effects on soil water characteristics.BC treatments with addition ratios of 2%,5%,and 10%significantly decreased BD by 6.55%,18.03%,and 36.07%,respectively.Moreover,saturated water content and field capacity were increased by BC.BC treatments significantly increased the readily available water by 32.65%,42.49%,and 50.01%,respectively.However,the increased non-readily available water induced by the high ratio of biochar addition was not easily utilized by plants.Our results suggested that the biochar amendment can improve soil structure,decrease soil BD,boost soil porosity and capillary porosity,and increase soil moisture constant,and 2-5% of BC was recommended in the field condition. | Zhuangzhuang Qian Luozhong Tang Shunyao Zhuang Yan Zou Delong Fu Xue Chen | 2020 | Biochar2020，2，4： | 7 |
| 2 | Influence of graphene microstructures on electrochemical performance for supercapacitors显示文摘The influence of variant graphenes on electrochemical performance for supercapacitors was studied comparatively and systematically by using SEM,FTIR and Raman spectroscopy,cyclic voltammetry(CV),galvanostatic charge/discharge and electrochemical impedance spectroscopy(EIS).The results revealed that:1) the nitrogen-doped graphene(N-G) electrode exhibited the highest specific capacitance at the same voltage scan rate;2) the specific capacitance of the N-G reached up to 243.5 F/g at 1 A/g,while regular graphite oxide(GO) was 43.5 F/g and reduced graphene oxide(rGO) was 67.9 F/g;3) N-G exhibited the best supercapacitance performance and the superior electrochemical properties,which made it an ideal electrode material for supercapacitors. | Youning Gong Delong Li Qiang Fu Chunxu Pan | 2015 | Progress in Natural Science:Materials International2015，25，5： | 1 |
| 3 | Microphysical characteristics of precipitating cumulus cloud based on airborne Ka-band cloud radar and droplet measurements显示文摘在积云中,大多数云粒子的直径在7到10微米之间,而在层云中,大多数云粒子的直径不超过2微米.云滴有效半径与云中行星边界层(PBL)及PBL上层的气溶胶数浓度(Na)呈负相关.在1500米以上的高液态水含量区域,云滴浓度(Nc)变化不大,Na含量降低.高雷达反射率对应于大的FCDP云粒子浓度和小的气溶胶粒子浓度.积云中的强上升气流增加了云滴的峰值半径和数浓度,拓宽了云滴谱;较低的空气温度有利于粒子的凝结增长,并产生较大的液滴. | Lei Wei Mengyu Huang Rong Zhang Yuhuan Lü Tuanjie Hou Hengchi Lei Delong Zhao Wei Zhou Yuan Fu | 2022 | Atmospheric and Oceanic Science Letters2022，15，2： | 1 |
| 4 | Causes and Laws of Floods in Small and Medium Rivers in Jiangxi Province显示文摘The main causes of floods in small and medium rivers in Jiangxi Province are meteorological factors,rainstorm factors and topographic factors.Based on the data of more than 600 floods from 19 hydrological stations in small and medium rivers in Jiangxi Province,the characteristics of floods in small and medium rivers are analyzed. The results show that the floods in small and medium rivers in Jiangxi Province had characteristics of strong seasonality,high frequency and strong suddenness,and were mainly local floods;rainstorm floods during May-June lasted for a long term,and had double peaks,multi-peaks or a single peak with a long duration. During July-September,floods usually had a single peak,and the duration was relatively short. | Jiawei FU Delong LI Xiaohua XU Siying LI | 2020 | Meteorological and Environmental Research2020，11，3： | 0 |
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