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Identifying suitable areas for plenter forest management

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Forest Ecosystems 2025年第1期12卷 83-92页

作者： Mathias Leiter Christoph Pucher Michael Kessler Ferdinand Honigsberger Manfred J.Lexer Harald Vacik Hubert Hasenauer institute of Silviculture University of Natural Resources and Life Sciences(BOKU)Peter-Jordan-Str.82A-1190ViennaAustria institute of Forest Engineering University of Natural Resources and Life Sciences(BOKU)Peter-Jordan-Str.82A-1190ViennaAustria

Plenter forests,also known as uneven-aged or continuous cover forests enhance forest resilience and resistance against disturbances compared to even-aged *** are considered as an adaptation option to mitigate climate change *** this study,we present a conceptual approach to determine the potentially suitable area for plenter forest management within central European mixed species forests and apply our approach to the case study area in Styria,the south-eastern Province of *** concept is based on ecological and technicaleconomic constraints and considers expected future climate conditions and its impact on plenter forest *** each 1 ha forest pixel,we assess the ecological conditions for plenter forest management according to the autecological growth conditions of silver fir,and at least one additional shade tolerant tree *** technical-economic constraints are defined by slope(≤30%)and distance to the next forest road(≤100 m)to ensure cost-efficient *** results show that under current climate conditions 28.1%or 305,349 ha of the forests in Styria are potentially suitable for plenter forest *** the years 2071–2100 and under the climate change scenario RCP 4.5,the potential area decreases to 286,098 ha(26.3%of the total forest area)and for the scenario RCP 8.5 to 208,421 ha(19.1%of the total forest area).The main reason for these changes is the unfavourable growing conditions for silver fir in the lowlands,while in the higher elevations silver fir is likely to *** results may serve forest managers to identify areas suitable for plenter forests and assist in the transformation of even-aged pure forests to uneven-aged forests to increase resistance,resilience,and biodiversity under climate change.

关键词： Plenter forest Uneven-aged forest management Tree species suitability Tree harvesting Transformation

Identifying suitable areas for plenter forest management

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Forest Ecosystems 2025年第01期 83-92页

作者： Mathias Leiter Christoph Pucher Michael Kessler Ferdinand H?nigsberger Manfred J.Lexer Harald Vacik Hubert Hasenauer institute of Silviculture University of Natural Resources and Life Sciences (BOKU) institute of Forest Engineering University of Natural Resources and Life Sciences (BOKU)

Plenter forests, also known as uneven-aged or continuous cover forests enhance forest resilience and resistance against disturbances compared to even-aged forests. They are considered as an adaptation option to mitigate climate change effects. In this study, we present a conceptual approach to determine the potentially suitable area for plenter forest management within central European mixed species forests and apply our approach to the case study area in Styria, the south-eastern Province of Austria. The concept is based on ecological and technicaleconomic constraints and considers expected future climate conditions and its impact on plenter forest management. For each 1 ha forest pixel, we assess the ecological conditions for plenter forest management according to the autecological growth conditions of silver fir, and at least one additional shade tolerant tree species. The technical-economic constraints are defined by slope(≤30%) and distance to the next forest road(≤100 m) to ensure cost-efficient harvesting. The results show that under current climate conditions 28.1% or 305,349 ha of the forests in Styria are potentially suitable for plenter forest management. For the years 2071–2100 and under the climate change scenario RCP 4.5, the potential area decreases to 286,098 ha(26.3% of the total forest area)and for the scenario RCP 8.5 to 208,421 ha(19.1% of the total forest area). The main reason for these changes is the unfavourable growing conditions for silver fir in the lowlands, while in the higher elevations silver fir is likely to expand. Our results may serve forest managers to identify areas suitable for plenter forests and assist in the transformation of even-aged pure forests to uneven-aged forests to increase resistance, resilience, and biodiversity under climate change.

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Pathways towards Miombo Restoration: A Lesson from Fire and Grazing Exclusion Plots at Kitulangalo Miombo Woodlands, Morogoro Tanzania

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Open Journal of Ecology 2025年第1期15卷 92-99页

作者： Elifuraha Elisha Njoghomi Sauli Valkonen Sally Archibald Tanzania Forestry Research institute (TAFORI) Dodoma Tanzania natural resources institute finland (luke) Helsinki Finland School of Animal Plant and Environmental Sciences University of the Witwatersrand Johannesburg South Africa

The current Tanzanian policy guidelines regarding ecological restoration encourage total protection (enclosure system) against grazing activities, fires and wood extraction to allow regeneration in state-based Miombo woodlands. However, there is little evidence on how such treatments would promote restoration. We fetched the pieces of evidence from studies that evaluated the impact of management treatments on the lightly degraded Miombo woodlands at Kitulangalo Forest Reserve in eastern Tanzania. Plot fencing and fire exclusion constrained woody species regeneration due to competition compared to unfenced plots. Adopting quota grazing policies and controlled burning systems can be the shortest and most eco-friendly pathways towards Miombo restoration. The results pointed out that stand disturbances and silvicultural practices can promote regeneration, which is crucial to promoting ecological restoration in Miombo woodlands.

关键词： natural Regeneration Silvicultural Treatments Conservation Policies Miombo Woodlands Ecological Restoration Tanzania

Extracting ship and heading from Sentinel-2 images using convolutional neural networks with point and vector learning

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Journal of Oceanology and Limnology 2025年第1期43卷 16-28页

作者： Xiunan LI Peng CHEN Jingsong YANG Wentao AN Dan LUO Gang ZHENG Aiying LU Ocean College Zhejiang UniversityZhoushan 316021China State Key Laboratory of Satellite Ocean Environment Dynamics Second Institute of OceanographyMinistry of Natural ResourcesHangzhou 310012China National Satellite Ocean Application Service Ministry of Natural ResourcesBeijing 100081China

Obtaining accurate ship positions and headings in remote sensing images plays a crucial role in various ***,current deep learning-based methods primarily focus on ship position detection,while the detection of ship wakes relies on traditional non-deep learning approaches,which often underperform in complex marine *** proposed a novel,simple,and efficient method called Point-Vector *** proposed method leverages convolutional neural networks(CNN)for feature extraction and subsequently integrates multi-scale features to generate high-resolution feature *** the final stage,ship positions and headings are represented using a combination of points and *** experiments with results from automatic identification system(AIS)reports demonstrate that our method achieved impressive performance in two-class ship target detection,with an average precision of 96.4%,recall rate of 94.3%,and an F 1 score of 95.2%.Notably,the average heading error was 3.3°.The proposed model achieved a practical inference speed(FPS>30),and the average processing time for inferring a large-scale Sentinel-2 remote sensing image was 11.4 s.

关键词： deep learning ship detection heading remote sensing Sentinel-2

Interpretable Machine Learning-Based Spring Algal Bloom Forecast Model for the Coastal Waters of Zhejiang

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Journal of Ocean University of China 2025年第1期24卷 1-12页

作者： HUANG Guoqiang BAO Min ZHANG Zhao GU Dongming LIANG Liansong TAO Bangyi State Key Laboratory of Satellite Ocean Environment Dynamics Second Institute of OceanographyMinistry of Natural ResourceHangzhou 310012China Wenzhou Marine Center Ministry of Natural ResourcesWenzhou 325000China Observation and Research Station of Yangtze River Delta Marine Ecosystems Ministry of Natural ResourcesZhoushan 316000China Key Laboratory of Marine Ecological Monitoring and Restoration Technologies Ministry of Natural ResourceShanghai 201206China

The 2016–2022 monitoring data from three ecological buoys in the Wenzhou coastal region of Zhejiang Province and the dataset European Centre for Medium-Range Weather Forecasts were examined to clarify the elaborate relationship between variations in ecological parameters during spring algal bloom incidents and the associated changes in temperature and wind fields in this study.A long short-term memory recurrent neural network was employed,and a predictive model for spring algal bloom in this region was *** model integrated various inputs,including temperature,wind speed,and other pertinent variables,and chlorophyll concentration served as the primary output *** model training used chlorophyll concentration data,which were supplemented by reanalysis and forecast temperature and wind field *** model demonstrated proficiency in forecasting next-day chlorophyll concentrations and assessing the likelihood of spring algal bloom occurrences using a defined chlorophyll concentration *** historical validation from 2016 to 2019 corroborated the model's accuracy with an 81.71%probability of correct prediction,which was further proven by its precise prediction of two spring algal bloom incidents in late April 2023 and early May *** interpretable machine learning-based model for spring algal bloom prediction,displaying effective forecasting with limited data,was established through the detailed analysis of the spring algal bloom mechanism and the careful selection of input *** insights gained from this study offer valuable contributions to the development of early warning systems for spring algal bloom in the Wenzhou coastal area of Zhejiang Province.

关键词： spring algal bloom forecast LSTM interpretable

Spatio-temporal patterns and climatic drivers of spring phenology in eight forest communities across the north-south transitional zone of China

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Journal of Geographical Sciences 2025年第1期35卷 17-38页

作者： ZHU Wenbin LU Yu institute of Geographic Sciences and natural resources Research CASBeijing100101China School of Geographical Science Nanjing University of Information Science&TechnologyNanjing210044China

The Qinba Mountains are climatically and ecologically recognized as the north-south transitional zone of *** of its phenology is critical for comprehending the response of vegetation to climatic *** retrieved the start of spring phenology(SOS)of eight forest communities from the MODIS products and adopted it as an indicator for spring *** analysis,partial correlation analysis,and GeoDetector were employed to reveal the spatio-temporal patterns and climatic drivers of *** results indicated that the SOS presented an advance trend from 2001 to 2020,with a mean rate of−0.473 d yr^(−1).The SOS of most forests correlated negatively with air temperature(TEMP)and positively with precipitation(PRE),suggesting that rising TEMP and increasing PRE in spring would forward and delay SOS,*** dominant factors influencing the sensitivity of SOS to climatic variables were altitude,forest type,and latitude,while the effects of slope and aspect were relatively *** response of SOS to climatic factors varied significantly in space and among forest communities,partly due to the influence of altitude,slope,and aspect.

关键词： spring phenology climatic drivers altitude forest communities lag effect Qinba Mountains

Carboniferous-Early Permian heterogeneous distribution of porous carbonate reservoirs in the Central Uplift of the South Yellow Sea Basin and its hydrocarbon potential analysis

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China Geology 2025年第1期8卷 58-76页

作者： Shu-yu Wu Jun Liu Jian-wen Chen Qi-liang Sun Yin-guo Zhang Jie Liang Yong-cai Feng School of Engineering China University of GeoscienceWuhan 430074China Yantai Center of Coastal Zone Geological Survey China Geological SurveyMinistry of Natural ResourcesYantai 264001China Key Laboratory of Submarine Geosicences Ministry of Natural ResourcesHangzhou 310012China Chinese Academy of Geological Sciences China Geological SurveyMinistry of Natural ResourcesBeijing 100037China Laboratory for Marine Mineral resources Qingdao National Laboratory for Marine Science and TechnologyQingdao 266061China The Key Laboratory of Gas Hydrate Ministry of Natural ResourcesQingdao Institute of Marine GeologyChina Geological SurveyMinistry of Natural ResourcesQingdao 266071China College of Marine Science and Technology China University of GeoscienceWuhan 430074China

Mesozoic-Palaeozoic marine carbonate rocks are crucial hydrocarbon reservoirs in the Central Uplift area of the South Yellow Sea Basin(SYSB).Due to the scarcity of boreholes and the significant heterogeneity of carbonate reservoirs,the distribution of porous carbonate reservoirs and their related key controlling factors remain *** this study,factors affecting the distribution of porous Carboniferous-Early Permian carbonate reservoirs in the SYSB were investigated through seismic inversion and isotope *** log-seismic characteristics of porous carbonate reservoirs,sensitive lithology parameters,and physical property parameters were extracted and *** pre-stack simultaneous inversion technique was applied to predict the lithology and physical properties of porous carbonate ***,the sedimentary of carbonate was analyzed using isotopes of carbon,oxygen,and *** results show that porous carbonate reservoirs are mainly developed in the open platform sediments with porosities of 3%-5%and are mainly distributed in the paleo-highland(Huanglong Formation and Chuanshan Formation)and the slope of paleo-highland(Hezhou Formation).The porous carbonate reservoirs of the Qixia Formation are only locally *** addition,the negativeδ13C excursions indicate a warm and humid tropical climate with three sea-level fluctuations in the study area from the Carboniferous to Early *** favorable conditions for developing porous carbonate rocks include the sedimentary environment and diagenetic *** primary pore tends to form in high-energy environments of the paleo-highland,and the secondary pore is increased by dissolution during the syngenetic or quasi-syngenetic *** to the hydrocarbon potential analysis,the Late Ordovician Wufeng Formation and Lower Silurian Gaojiabian Formation are the source rocks in the high-maturity-over-maturity stage,the Carboniferous-Lower Permian carbonate is the good reservoirs,and th

关键词： Sedimentary Heterogeneous porous carbonate reservoirs C-H-Sr isotope analysis Carboniferous-Early Permian Chuanshan Formation Huanglong Formation Pre-stack simultaneous inversion technique Oil-gas exploration engineering Hydrocarbon accumulation Hydrocarbon potential Central Uplift of the South Yellow Sea Basin

Chemical weathering in Manas River Basin:Driven by sulfuric acid or carbonic acid?

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Acta Geochimica 2025年第1期44卷 59-85页

作者： Jiaxin Zhang Bingqi Zhu Key Laboratory of Water Cycle and Related Land Surface Processes Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijingChina University of Chinese Academy of Sciences BeijingChina

Carbonic acid produced by the dissolution of atmospheric and soil CO_(2)in water is usually the most dominant catalyst for chemical weathering,but a sulfuric aciddriven phenomenon,different from usual,was found in the orogenic belt watersheds dominated by silicate *** study,rooted in comprehensive field investigations in the Manas River Basin(MRB)north of the Tianshan Mountains,delves into the mechanisms and impacts of sulfuric and carbonic acid as catalysts driving diff erent types of chemical weathering in the Central Asian Orogenic *** analyses elucidate that carbonate weathering constitutes 52.4%of the total chemical weathering,while silicate and evaporite account for 18.6%and 25.3%,respectively,with anthropogenic activities and atmospheric precipitation having little eff *** estimated total chemical weathering rate in MRB is approximately 0.075×10^(6)mol/km^(2)/*** findings further suggest that,preceding carbonate precipitation(<10^(4)year),chemical weathering can absorb CO_(2).Subsequently,and following carbonate precipitation(10^(4)-10^(7)year),it will release CO_(2).The release significantly surpasses the global average CO_(2)consumption,contributing to a noteworthy climate *** study underscores the distinctive weathering mechanisms,wherein sulfuric acid emerges as the predominant *** quantity of sulfuric acid as a catalyst is approximately three times that of carbonic *** acid-driven carbonate rock weathering(SCW)is identified as the sole chemical weathering type with a net CO_(2)release eff *** CO_(2)release flux(5176 mol/km^(2)/year)is roughly 2.5 times the CO_(2)absorption by Ca-Mg silicate weathering,highlighting the pivotal role of chemical weathering in sourcing atmospheric CO_(2)over the timescales of carbonate precipitation and sulfate ***,this study posits that catalyst and transport limitations are the most plausible critical factors in *** interplay between s

关键词： Catchment chemical weathering Mid-latitude orogenic belt Sulﬁde oxidation Manas River Basin

Dibutyl phthalate disrupts[Ca^(2+)]_(i),reactive oxygen species,[pH]_(i),protein kinases and mitochondrial activity,impairing sperm function

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Journal of Environmental Sciences 2025年第5期151卷 68-78页

作者： Seung Hyun Park Myung Chan Gye Department of Life Science and institute for natural Sciences Hanyang UniversitySeoul 04763Republic of Korea

To explore the mechanism of sperm dysfunction caused by dibutyl phthalate(DBP),the effects of DBP on intracellular[Ca^(2+)]and[pH],reactive oxygen species(ROS),lipid peroxidation(LPO),mitochondrial permeability transition pore(mPTP)opening,mitochondrial membrane potential(MMP),adenosine triphosphate(ATP)levels,phosphorylation of protein kinase A(PKA)substrate proteins and phosphotyrosine(p-Tyr)proteins,sperm motility,spontaneous acrosome reaction,and tail bending were examined in mouse *** 100μg/mL,DBP significantly increased tail bending and[Ca^(2+)]***,DBP showed biphasic effects on[pH]*** at 10–100μg/mL significantly decreased sperm ***,Ca^(2+)ionophore A23187 decreased[pH]_(i)sperm motility,suggesting that DBP-induced excessive[Ca^(2+)]_(i)decreased sperm *** significantly increased ROS and *** at 100μg/mL significantly decreased mPTP closing,MMP,and ATP levels in spermatozoa,as did H2O2,indicative of ROS-mediatedmitochondrial dysfunction caused by *** as well as H2O2 increased p-Tyr sperm proteins and phosphorylated PKA substrate sperm *** at 1–10μg/mL significantly increased the spontaneous acrosome reaction,suggesting that DBP can activate sperm ***,DBP showed a biphasic effect on intracellular signaling in *** concentrations relevant to seminal ortho-phthalate levels,DBP activates[pH]i,protein tyrosine kinases and PKA via physiological levels of ROS generation,potentiating sperm *** at high doses excessively raises[Ca^(2+)]_(i)and ROS and disrupts[pH]i,impairing the mitochondrial function,tail structural integrity,and sperm motility.

关键词： Dibutyl phthalate Reactive oxygen species(ROS) [Ca^(2+)]_(i) [pH]_(i) Mitochondria Protein kinases Sperm