摘要：
Antibiotic-containing wastewater is a typical biochemical refractory organic wastewater and general treatment methods cannot effectively and quickly degrade the antibiotic molecules. In this study, a novel boron-doped diamond (BDD) pulse electrochemical oxidation (PEO) technology was proposed for the efficient removal of levofloxacin (LFXN) from wastewater. The effects of current density (j), initial pH (pH(0)), frequency (f), electrolyte types and initial concentration (c(0)(LFXN)) on the degradation of LFXN were systematically investigated. The degradation kinetics under four different processes have also been studied. The possible degradation mechanism of LFXN was proposed by Density functional theory calculation and analysis of degradation intermediates. The results showed that under the optimal parameters, the COD removal efficiency (η(COD)) was 94.4% and the energy consumption (EEC) was 81.43 kWh·m(-3)att=120min. The degradation of LFXN at pH=2.8/c(H(2)O(2)) followed pseudo-first-order kinetics. The apparent rate constant was 1.33×10(-2) min(-1), which was much higher than other processes. The degradation rate of LFXN was as follows: pH=2.8/c(H(2)O(2))>pH=2.8>pH=7/c(H(2)O(2))>pH=7. Ten aromatic intermediates were formed during the degradation of LFXN, which were further degraded to F(-), NH(4)(+), NO(3)(-), CO(2) and H(2)O. This study provides a promising approach for efficiently treating LFXN antibiotic wastewater by pulsed electrochemical oxidation with a BDD electrode without adding H(2)O(2).
作者机构：
College of Life Science and Technology, Central South University of Forestry and Technology, Changsha 410004, China;National Engineering Laboratory for Applied Technology of Forestry and Ecology in South China, Central South University of Forestry and Technology, Changsha 410004, China;Nanjing Prosper Institute of Eco-Environment Engineering, Building 33, 70 Feinikesi Road, Jiangning Development Zone Headquarters Base, Nanjing 211100, China;Author to whom correspondence should be addressed.;[Liu, Shuguang] College of Life Science and Technology, Central South University of Forestry and Technology, Changsha 410004, China<&wdkj&>National Engineering Laboratory for Applied Technology of Forestry and Ecology in South China, Central South University of Forestry and Technology, Changsha 410004, China<&wdkj&>Nanjing Prosper Institute of Eco-Environment Engineering, Building 33, 70 Feinikesi Road, Jiangning Development Zone Headquarters Base, Nanjing 211100, China<&wdkj&>Author to whom correspondence should be addressed.
通讯机构：
[Shuguang Liu] C;College of Life Science and Technology, Central South University of Forestry and Technology, Changsha 410004, China<&wdkj&>National Engineering Laboratory for Applied Technology of Forestry and Ecology in South China, Central South University of Forestry and Technology, Changsha 410004, China<&wdkj&>Nanjing Prosper Institute of Eco-Environment Engineering, Building 33, 70 Feinikesi Road, Jiangning Development Zone Headquarters Base, Nanjing 211100, China<&wdkj&>Author to whom correspondence should be addressed.
关键词：
MODIS;ecosystem services;African countries and regions;trade-offs and synergies
摘要：
The proper management of multiple ecosystem services (ESs) in a balanced manner is an important and challenging responsibility. However, due to infrastructural constraints, we need to understand more about the spatial interactions among ESs in most African countries. Therefore, we took 48 African countries, 5 African geopolitical regions, and the African continent as case studies to diagnose the spatial trade-offs and synergies among 17 ESs and 8 types of land use and land cover (LULC) in 2000 and 2019. The implications of our findings at the national, regional, continental, and global levels were explored. To achieve this, we mapped the spatial distributions of the 17 ESs at the continental level using classified land cover data from MODIS remotely sensed data, with a spectral band between 0.405 and 14.385 µm and a spatial resolution of 500 m. Then, we used Spearman’s rank correlation coefficient to determine the spatial interactions among the 17 ESs. The results show that regulation services showed synergies at the continental level in gas regulation (0.66), climate regulation (0.71), disturbance regulation (0.14), water regulation (0.53), water supply (0.71), and waste treatment (0.06). Moreover, we found moderate levels of interactions among most ESs in the 48 countries, with most regulating services and supporting services exhibiting trade-offs with other categories of ESs, among other findings. The results will inform scientific communities and authorities at all levels on how to deliver human well-being and quality of life, and usher in a sustainable change where we expect better ecosystem management and ecological conservation.
作者机构：
[Wu, Huili; Chen, Liang; Xiang, Wenhua; Zeng, Yelin; Ouyang, Shuai; Lei, Pifeng; Deng, Xiangwen] Cent South Univ Forestry & Technol, Fac Life Sci & Technol, 498 Southern Shaoshan Rd, Changsha 410004, Hunan, Peoples R China.;[Wu, Huili; Chen, Liang; Xiang, Wenhua; Zeng, Yelin; Ouyang, Shuai; Lei, Pifeng; Deng, Xiangwen] Huitong Natl Stn Sci Observat & Res Chinese Fir Pl, Huitong 438107, Peoples R China.;[Zhou, Wenneng] Guangdong Univ Technol, Sch Ecol Environm & Resources, Guangdong Prov Key Lab Water Qual Improvement & Ec, Guangzhou 510006, Peoples R China.;[Wu, Meigang] Forestry Dept Huitong Cty, Huitong 438107, Peoples R China.;[Zeng, Lixiong; Xiao, Wenfa] Chinese Acad Forestry, Res Inst Forest Ecol Environm & Protect, Key Lab Forest Ecol & Environm, State Forestry Adm, Beijing 100091, Peoples R China.
通讯机构：
[Wenneng Zhou] G;[Wenhua Xiang] F;Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds, School of Ecology, Environment and Resources, Guangdong University of Technology, Guangzhou 510006, China<&wdkj&>Faculty of Life Science and Technology, Central South University of Forestry and Technology, Changsha 410004, Hunan Province, China<&wdkj&>Huitong National Station for Scientific Observation and Research of Chinese Fir Plantation Ecosystem in Hunan Province, Huitong 438107, China
作者机构：
[Shen, Ai-rong; Li, Ji-lie; Ren, Ye-song; Luo, Chen] Cent South Univ Forestry & Technol, Hunan Prov Key Lab Forestry Biotechnol, 498 Shaoshan South Rd, Changsha 410004, Hunan, Peoples R China.;[Cheng, Yi; Zeng, Liang-bin; Zhai, Yang; Luo, Chen; Xu, Jianping] Chinese Acad Agr Sci, Inst Bast Fiber Crops, 348 Xianjiahu West Rd, Changsha 410205, Hunan, Peoples R China.;[Shen, Ai-rong] Hunan Acad Forestry, Changsha 410004, Peoples R China.;[Xu, Jianping] McMaster Univ, Dept Biol, Hamilton, ON L8S 4K1, Canada.;[Wei, Lin] Hunan Acad Agr Sci, Inst Plant Protect, Changsha 410125, Peoples R China.
通讯机构：
[Ji-lie Li] H;[Liang-bin Zeng] I;Hunan Provincial Key Laboratory of Forestry Biotechnology, Central South University of Forestry and Technology, Changsha, China<&wdkj&>Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, China
期刊：
Journal of Plant Growth Regulation,2023年42(7):4095-4105 ISSN：0721-7595
通讯作者：
Meng Li
作者机构：
[Li, Meng; Li, Jian; Ji, Xiaomin; Mao, Rongjie] Cent South Univ Forestry & Technol, Coll Life Sci & Technol, Changsha 410004, Peoples R China.;[Cao, Fuxiang] Hunan Agr Univ, Coll Hort & Landscape, Changsha 410004, Peoples R China.
通讯机构：
[Meng Li] C;College of Life Science and Technology, Central South University of Forestry and Technology, Changsha, China
关键词：
CCoAOMT;Lignin;Poplar (Populus tomentosa);Arabidopsis thaliana;Dove tree (Davidia involucrata Baill.)
摘要：
Rapid lignification and high lignin accumulation occur in the endocarps of the dove tree (Davidia involucrata) during a short developmental phase. Through transcriptome analysis, we identified a gene named DiCCoAOMT1 that plays a vital role in the rapid lignification process. The expression profile of the DiCCoAOMT1 gene was endocarp-specific, and its encoding product showed strong O-methyltransferase activity in vitro. Here, we overexpressed the DiCCoAOMT1 gene in both Arabidopsis and poplar (Populus tomentosa) to verify its function of lignin biosynthesis and accumulation. Increased plant height and lengthened pods arose in transgenic Arabidopsis lines, while elongated petioles were observed in transgenic poplar lines. Moreover, the stems exhibited enlarged xylem area, reduced pith area, and more compact cell architecture in both transgenic Arabidopsis and poplar lines. The lignin content was elevated by 26% and 20% on average in the stems of transgenic Arabidopsis and poplar lines, respectively. Furthermore, the lignin composition was altered in the transgenic lines indicated by the elevated S/G ratio. Taken together, we proposed that overexpressing the DiCCoAOMT1 gene can effectively increase lignin biosynthesis and change lignin monomer composition in both herb and woody plants. The endocarp-specific expression pattern of the DiCCoAOMT1 gene is assumed to be a key point to form the highly lignified structure in a short period, thus causing the long-period dormancy of Davidia seeds.
关键词：
Urbanization effects;Surface energy balance;Surface warming;Space-for-time substitution;Temporal analysis;Future prediction;Climate background
摘要：
As both drivers and first responders, urban areas are rapidly increasing in importance of shaping global climate change. The global imprint of urbanization on surface energy balance (SEB) remains, however, largely unknown. Here, we undertake a global spatiotemporal analysis on urbanization-induced Earth's surface energy alteration using annually dynamic maps of impervious surface and satellite-derived surface energy fluxes and land surface temperature (LST), alongside space-for-time (spatial) and time-for-time (temporal) approaches. Relying on space-for-time substitution, we estimate that global urbanization-driven surface warming of annual mean temperature has reached 0.054 degrees C (95% CI, 0.009-0.214 degrees C) between 2003 and 2018 (with temporal stability), especially pronounced in summer daytime (0.122 degrees C, -0.038-0.495 degrees C), largely attributed to decline in local latent heat cooling, enlarged long-wave heat dissipation and anthropogenic heat. Temporal quantification of urbanization effects demonstrates consistence with spatial gradient approach, implying that space can substitute time in understanding and predicting future urbanization imprint on SEB and temperature (i.e., cities as harbingers of climate change). We further predict that during the first 35 years of this century annual warming magnitude will be nearly double that of the period 1985-2018, and particularly, urbanization perturbation to SEB will be more intense across countries or regions in the arid and warm temperate climates under global warming. This research provides science-based foundation that can help inform the IPCC special report on cities and climate change, and emphasize urgency to develop tailored mitigation and adaptation strategies against rapidly warming based on SEB attribution and climate background.
作者机构：
[Liu, Zhihua; Zhu, Jiaojun; Wang, Xugao; Fang, Yunting; Liang, Yu] Chinese Acad Sci, Inst Appl Ecol, CAS Key Lab Forest Ecol & Management, Shenyang, Peoples R China.;[Wang, Wen J.] Chinese Acad Sci, Northeast Inst Geog & Agroecol, Changchun, Peoples R China.;[Ballantyne, Ashley] Univ Montana, Dept Ecosyst & Conservat Sci, WA Franke Coll Forestry & Conservat, Missoula, MT USA.;[Yu, Kailiang; Ciais, Philippe; Ballantyne, Ashley] Univ Paris Saclay, CEA CNRS UVSQ 14, Lab Sci Climat & Environm, LSCE IPSL, F-91191 Gif Sur Yvette, France.;[He, Hong S.] Univ Missouri, Sch Nat Resources, Columbia, MO 65211 USA.
通讯机构：
[Liu, Zhihua; Zhu, Jiaojun] C;[Xu, Wenru] D;CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China<&wdkj&>Department of Geological and Atmospheric Sciences, Iowa State University, Ames, USA
摘要：
The rate, frequency and extent of forest disturbances decreased in China over 1986-2020 probably due to forest protection policies, but while they intensified in the southeast, they weakened in the northeast, according to 30 m resolution Landsat satellite data Human activities have altered disturbance patterns in many parts of world, but there is no quantitative information on patterns and trends of forest disturbance regimes in China. We applied a spectral-temporal segmentation approach over all available Landsat data to map individual disturbance patches and characterize the patterns and trends in disturbance rate, size, frequency, and severity across China's forests. From 1986 to 2020, about 39.7% of China's forests were disturbed with an annual rate of 1.16 +/- 0.41% yr(-1). The disturbance decreased at a rate of -390 +/- 142 km(2) yr(-1), primarily driven by the effective implementation of forest protection policy since 2000s. The rate, frequency, and size of disturbance generally intensified in Southeast, but weakened in Northeast China. Our high-quality, spatially explicit disturbance map provides an essential data layer to understand the landscape-scale drivers of forest dynamics and functions for important but less understood pan-temperate forest regions.
作者机构：
[Lei, Junjie; Wang, Guangjun; Wu, Yaohui; Pan, Yuliang; Yan, Wende; Zou, Dongjun; Wang, Jun] College of Life Science and Technology, Central South University of Forestry and Technology, Changsha, Hunan, 410004, China;[Peng, Yuanying] College of Arts and Sciences, Saint Xavier University, Chicago, IL, 60655, USA;[Wang, Guangjun; Pan, Yuliang; Wang, Jun] National Engineering Laboratory for Applied Technology of Forestry and Ecology in South China, Changsha, Hunan, 410004, China;[Yan, Wende] National Engineering Laboratory for Applied Technology of Forestry and Ecology in South China, Changsha, Hunan, 410004, China. Electronic address: csfuywd@hotmail.com;[Chen, Xiaoyong] College of Arts and Sciences, Governors State University, University Park, IL 60484, USA. Electronic address: xchen@govst.edu
通讯机构：
[Wende Yan; Xiaoyong Chen] C;College of Arts and Sciences, Governors State University, University Park, IL 60484, USA<&wdkj&>College of Life Science and Technology, Central South University of Forestry and Technology, Changsha, Hunan, 410004, China<&wdkj&>National Engineering Laboratory for Applied Technology of Forestry and Ecology in South China, Changsha, Hunan, 410004, China
摘要：
Chromium (Cr) is one of the common environmental pollutants, which causes severe health hazards on human health and environmental security. In this study, we characterized two biochars, a raw biochar (RBC) and a Fe-modified biochar (MBC) made from poplar wood chips and determined the effect of the two biochars on remediation of hexavalent chromium (Cr(VI)) in hydroponic system by monitoring Pak choi growth. Results showed the surface area, pore number and pore volume were significantly higher in MBC than in PBC, but the pore size was larger in PBC than in MBC. When compared to the control, low concentrations of Cr(VI) (≤2mgL(-1)) promoted the growth and biomass production of Pak choi by 10-78%. In contrast, the high concentrations of Cr(VI) (≥4mgL(-1)) showed a significantly reduction of the growth and biomass production of Pak choi by 10-28%. Fe-modified biochar (MBC) had a more significant impact than RBC on the remediation of Cr in the Cr(VI) pollution and improved growth and biomass production of Pak choi to a greater extent. Our study indicated that MBC has a better effect on degrading Cr(VI) pollution. The findings provide scientific basis and reference for the remediation of heavy metals in aquatic ecosystems by using biochar.
通讯机构：
[Liu, SG ] C;Cent South Univ Forestry & Technol, Coll Life Sci & Technol, Natl Engn Lab Appl Technol Forestry & Ecol South C, Changsha 410004, Peoples R China.;Minist Nat Resources, Technol Innovat Ctr Ecol Protect & Restorat Dongti, Changsha 410004, Peoples R China.
关键词：
ecosystem service;land use and land cover;change detection and classification;Dongting Lake;landscape pattern;trade-offs and synergies;nonlinear relationship
摘要：
Ecosystem services (ES) are directly affected by land use and land cover changes (LUCC); however, the impacts of extended period LUCC on ES are poorly explored. Here, we mapped the 1998–2019 annual land use and land cover in the Dongting Lake Region (China) and explored the spatiotemporal evolution of LUCC and landscape patterns (i.e., composition, shape, and aggregation) and their relationship with ES, including carbon storage, gross primary production (GPP), water conservation capacity, and crop yield in the region. The results showed a significant increase in forest areas and impervious surfaces and a decrease in croplands and bare lands with spatial heterogeneity. Carbon storage was strongly correlated with forest, cropland, waterbody, impervious surface, and bare land, and there was a nonlinear relationship between landscape patterns and ES. The trade-offs and synergies (correlations) among ES varied considerably, with crop yield being significantly synergistic with carbon stocks, GPP, or GPP with carbon stocks. This study revealed the nonlinear relationship between landscape patterns and ES, and the mechanism of landscape characteristics on ES. The findings can provide scientific support for regional land use planning, ES regulation, and landscape optimization in the lake region.
通讯机构：
[Yang Zeng] L;Laboratory of Insect Behavior and Evolutionary Ecology, College of Life Science and Technology, Central South University of Forestry and Technology, Changsha 410004, China<&wdkj&>Author to whom correspondence should be addressed.
摘要：
Simple Summary In wing dimorphic insects, long-winged (LW) females were generally considered to be potential migrants, whereas short-winged females were considered sedentary. The aim of this research was to investigate the flight ability of LW females in the wing dimorphic crickets Velarifictorus aspersus and examine the effect of flight on ovarian development in LW females with different flight capacities. We provide the first evidence that flight ability varied among LW females, and the critical flight time for switching from flight to reproduction varied among LW V. aspersus female crickets with polymorphic flight behavior. A trade-off between the capacity for flight and reproduction has been documented extensively in wing polymorphic female insects, thereby supporting the possible fitness gain due to flightlessness. However, most of these studies were conducted without considering the effect of flight behavior. In the present study, we assessed the flight duration by long-winged (LW) females in the cricket species Velarifictorus aspersus on different days after adult emergence and examined the effect of flight on ovarian development in LW females with different flight capacities. Our results showed that the flight capacity increased with age and peaked after 5 days. In addition, the flight capacity varied among individuals, where most LW females could only take short flights (sustained flight time < 10 min) and only a few individuals could take long flights (sustained flight time > 20 min). In LW female crickets demonstrating only short flights, repeated flying for 30 or 60 min significantly promoted reproductive development. However, in those capable of long flights, reproductive development was affected only after a flight of 60 min. The flight muscles degraded after the start of rapid reproduction in those with both short and long flights. Our results indicated that the critical flight time for switching from flight to reproduction varies among LW V. aspersus female crickets with polymorphic flight behavior.
期刊：
Industrial Crops and Products,2023年198:116679 ISSN：0926-6690
通讯作者：
Hanjie He<&wdkj&>Wende Yan
作者机构：
[Sun, Wenkai; He, Hanjie; Zhang, Xuejing; Yan, Wende; Chen, Lili] Cent South Univ Forestry & Technol, Coll Life Sci & Technol, Natl Engn Lab Appl Technol Forestry & Ecol South C, Hunan Prov Key Lab Forestry Biotechnol,Int Coopera, Changsha 410004, Hunan, Peoples R China.;[Chen, Xiaoyong] Governors State Univ, Coll Arts & Sci, University Pk, IL 60484 USA.;[Lv, Zhencheng] Huizhou Univ, Sch Life Sci, Huizhou 516007, Guangdong, Peoples R China.
通讯机构：
[Hanjie He; Wende Yan] N;National Engineering Laboratory for Applied Technology of Forestry ＆ Ecology in South China/Hunan Provincial Key Laboratory of Forestry Biotechnology/International Cooperation Base of Science and Technology Innovation on Forest Resource Biotechnology, College of Life Sciences and Technology, Central South University of Forestry ＆ Technology, Changsha 410004, Hunan, China
