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Dynamics of Land Use/Land Cover Considering Ecosystem Services for a Dense-Population Watershed Based on a Hybrid Dual-Subject Agent and Cellular Automaton Modeling Approach

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Engineering 2024年第6期37卷 182-195页

作者： Yutong Li yanpeng cai Qiang Fu Xiaodong Zhang Hang Wan Zhifeng Yang Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds Institute of Environmental and Ecological EngineeringGuangdong University of TechnologyGuangzhou 510006China School of Water Conservancy and Civil Engineering Northeast Agricultural UniversityHarbin 150030China School of Environmental Science and Engineering Shandong UniversityQingdao 266000China

Land use/land cover represents the interactive and comprehensive influences between human activities and natural conditions,leading to potential conflicts among natural and human-related issues as well as among *** study introduced economic standards for farmers.A hybrid approach(CA-ABM)of cellular automaton(CA)and an agent-based model(ABM)was developed to effectively deal with social and land-use synergic issues to examine human–environment interactions and projections of land-use conversions for a humid basin in south *** attributes and socioeconomic data were used to analyze land use/land cover and its drivers of *** major modules of the CA-ABM are initialization,migration,assets,land suitability,and land-use change *** estimates of the factors influencing the urban land-use conversion probability were captured using parameters based on a spatial logistic regression(SLR)***,multicriteria evaluation(MCE)and Markov models were introduced to obtain empirical estimates of the factors affecting the probability of ecological land *** agent-based CA-SLR-MCE-Markov(ABCSMM)land-use conversion model was proposed to explore the impacts of policies on land-use *** model can reproduce observed land-use patterns and provide links for forest transition and urban expansion to land-use decisions and ecosystem *** results demonstrated land-use simulations under multi-policy scenarios,revealing the usefulness of the model for normative research on land-use management.

关键词： Land use/land cover Human-environment interactions Agent-based model Cellular automaton

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The frontier evolution and emerging trends of hydrological connectivity in river systems:a scientometric review

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Frontiers of Earth Science 2021年第1期15卷 81-93页

作者： Bowen LI Zhifeng YANG yanpeng cai Bo LI Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds Institute of Environmental and Ecological EngineeringGuangdong University of TechnologyGuangzhou 510006China Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou 511458China

With the intensification of climate change and human activities,the watershed ecosystem is seriously fragmented,which leads to the obstruction of hydrological connectivity,and further causes the degradation of the *** the value of wetlands continues to be exploited,hydrological connectivity becomes increasingly *** this paper,the characteristics and development of hydrological connectivity research from 1998 to 2018 were analyzed through the scientometric analysis based on Web of Science ***,an analytical software for scientific measurement,is used to visualize the results of the *** analysis results of co-occurrence,co-operative and co-cited network indicate that the hydrological connectivity is a multidisciplinary field which involves the Environment Science and Ecology,Water Resources,Environmental Sciences,Geology and *** to Keyword cooccurrence analysis,ecosystem,floodplain,dynamics,climate change and management are the main research hotspots in each *** addition,the co-cited analysis of references shows that“amphibians”is the largest cluster of hydrological connectivity,and the“channel network”is the most important research *** is worth noting that the“GIWS”(Geographically Isolated Wetlands)is the latest research topic and may be a major research direction in the future.

关键词： hydrological connectivity citespace ecosystem geographically isolated wetlands

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Coupled planning of water resources and agricultural land-use based on an inexact-stochastic programming model

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Frontiers of Earth Science 2014年第1期8卷 70-80页

作者： Cong DONG Guohe HUANG Qian TAN yanpeng cai MOE Key Laboratory of Regional Energy and Environmental Systems Optimization Resources and Environmental Research Academy North China Electric Power University Beijing 102206 China State Key Laboratory of Water Environment Simulation School of Environment Beijing Normal University Beijing 100875 China Institute for Energy Environment and Sustainable Communities University of Regina Saskatchewan S4S 7H9 Canada

Water resources are fundamental for support of regional development. Effective planning can facilitate sustainable management of water resources to balance socioeconomic development and water conservation. In this research, coupled planning of water resources and agricultural land use was undertaken through the develop- ment of an inexact-stochastic programming approach. Such an inexact modeling approach was the integration of interval linear programming and chance-constraint pro- gramming methods. It was employed to successfully tackle uncertainty in the form of interval numbers and probabil- istic distributions existing in water resource systems. Then it was applied to a typical regional water resource system for demonstrating its applicability and validity through generating efficient system solutions. Based on the process of modeling formulation and result analysis, the developed model could be used for helping identify optimal water resource utilization patterns and the corresponding agri- cultural land-use schemes in more, a number of decision three sub-regions. Further- alternatives were generated under multiple water-supply conditions, which could help decision makers identify desired management policies.

关键词： water resources management regional water system planning scenario analysis uncertainty

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Development of a model-based flood emergency management system in Yujiang River Basin, South China

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Frontiers of Earth Science 2014年第2期8卷 231-241页

作者： Yong ZENG yanpeng cai Peng JIA Jiansu MAO State Key Laboratory of Petroleum Resource and Prospecting College of Geosciences China Petroleum University Beijing 102249 China State Key Laboratory of Water Environment Simulation School of Environment Beijing Normal University Beijing 100875 China Institute for Energy Environment and Sustainability Communities University of Regina Regina Sask S4S 7H9 Canada Appraisal Center for Environment and Engineering Ministry of Environmental Protection Beijing 100012 China

Flooding is the most frequent disaster in China. It affects people＇s lives and properties, causing considerable economic loss. Flood forecast and operation of reservoirs are important in flood emergency management. Although great progress has been achieved in flood forecast and reservoir operation through using computer, network technology, and geographic information system technology in China, the prediction accuracy of models are not satisfactory due to the unavailability of real-time monitoring data. Also, real-time flood control scenario analysis is not effective in many regions and can seldom provide online decision support function. In this research, a decision support system for real-time flood forecasting in Yujiang River Basin, South China （DSS-YRB） is introduced in this paper. This system is based on hydrological and hydraulic mathematical models. The conceptual framework and detailed components of the proposed DSS-YRB is illustrated, which employs real-time rainfall data conversion, model-driven hydrologic forecasting, model calibration, data assimilation methods, and reservoir operational scenario analysis. Multi-tiered architecture offers great flexibility, portability, reusability, and relia- bility. The applied case study results show the development and application of a decision support system for realtime flood forecasting and operation is beneficial for flood control.

关键词： flood decision support system numericalmodeling scenarios analysis Yujiang River Basin

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Urban energy consumption and related carbon emission estimation： a study at the sector scale

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Frontiers of Earth Science 2013年第4期7卷 480-486页

作者： Weiwei LU Chen CHEN Meirong SU Bin CHEN yanpeng cai Tao XING State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Beijing Normal University Beijing 100875 China Institute for Energy Environment and Sustainable Communities University of Regina Regina S4S 7H9 Canada Beijing Yanqing District Development and Reform Commission Beijing 102100 China

With rapid economic development and energy consumption growth, China has become the largest energy consumer in the world. Impelled by extensive international concern, there is an urgent need to analyze the character- istics of energy consumption and related carbon emission, with the objective of saving energy, reducing carbon emission, and lessening environmental impact. Focusing on urban ecosystems, the biggest energy consumer, a method for estimating energy consumption and related carbon emission was established at the urban sector scale in this paper. Based on data for 1996-2010, the proposed method was applied to Beijing in a case study to analyze the consumption of different energy resources （i.e., coal, oil, gas, and electricity） and related carbon emission in different sectors （i.e., agriculture, industry, construction, transportation, household, and service sectors）. The results showed that coal and oil contributed most to energy consumption and carbon emission among different energy resources during the study period, while the industrial sector consumed the most energy and emitted the most carbon among different sectors. Suggestions were put forward for energy conservation and emission reduction in Beijing. The analysis of energy consumption and related carbon emission at the sector scale is helpful for practical energy saving and emission reduction in urban ecosystems.

关键词： energy consumption carbon emission urban sector Beijing

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A New Method of Assessing Environmental Flows in Channelized Urban Rivers

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Engineering 2018年第5期4卷 590-596页

作者： Xin-An Yin Zhifeng Yang Enze Zhang Zhihao Xu yanpeng cai Wei Yang State Key Laboratory of Water Environment Simulation School of Environment Beijing Normal University Beijing 100875 China

Assessing environmental flows （e-flows） for urban rivers is important for water resources planning and river protection, Many e-flow assessment methods have been established based on species＇ habitat pro- vision requirements and pollutant dilution requirements, To avoid flood risk, however, many urban rivers have been transformed into straight, trapezoidal-profiled concrete channels, leading to the disappearance of valuable species, With the construction of water pollution-control projects, pollutant inputs into rivers have been effectively controlled in some urban rivers, For these rivers, the e-flows determined by tradi- tional methods will be very small, and will consequently lead to a low priority being given to river pro- tection in future water resources allocation and management, To more effectively assess the e-flows of channelized urban rivers, we propose three e-flow degrees, according to longitudinal hydrological con- nectivity （high, medium, and low）, in addition to the pollutant dilution water requirement determined by the mass-balance equation, In the high connectivity scenario, the intent is for the e-flows to maintain flow velocity, which can ensure the self-purification of rivers and reduce algal blooms; in the medium connectivity scenario, the intent is for the e-flows to permanently maintain the longitudinal hydrological connectivity of rivers that are isolated into several ponds by means of weirs, in order to ensure the exchange of material, energy, and information in rivers; and in the low connectivity scenario, the intent is for the e-flows to intermittently connect isolated ponds every few days （which is designed to further reduce e-flows）, The proposed methods have been used in Shiwuli River, China, to demonstrate their effectiveness, The new methods can offer more precise and realistic e-flow results and can effectively direct the construction and management of e-flow supply projects,

关键词： Environmental flow Urban river Channelized rivers River restoration

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Hydrological Response to Climate and Land Use Changes in the Dry–Warm Valley of the Upper Yangtze River

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Engineering 2022年第12期19卷 24-39页

作者： Congcong Li yanpeng cai Zhong Li Qianqian Zhang Lian Sun Xinyi Li Pengxiao Zhou State Key Laboratory of Water Environment Simulation School of EnvironmentBeijing Normal UniversityBeijing 100875China Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds Institute of Environmental and Ecological EngineeringGuangdong University of TechnologyGuangzhou 510006China Department of Civil Engineering McMaster UniversityHamiltonON L8S 4L7Canada Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou 511458China Chengdu University of Information Technology Chengdu 610225China

The hydrological process in the dry–warm valley of the mountainous area of southwest China has unique characteristics and has attracted scientific attention *** that this is an area with fragile ecosystems and intensive water resource conflicts in the upper reaches of the Yangtze River,a systematic identification of its hydrological responses to climate and land use variations needs to be *** this study,MIKE SHE was employed and calibrated for the Anning River Basin in the dry–warm ***,a deep learning neural network model of the long short-term memory(LSTM)and a traditional multi-model ensemble mean(MMEM)method were used for an ensemble of 31 global climate models(GCMs)for climate *** cellular automata–Markov model was implemented to project the spatial pattern of land use considering climatic,social,and economic *** sets of climate projections and three sets of land use projections were generated and fed into the MIKE SHE to project hydrologic responses from 2021 to *** the calibration and first validation periods of the daily simulation,the coefficients of determination(R)were 0.85 and 0.87 and the Nash–Sutcliffe efficiency values were 0.72 and 0.73,*** advanced LSTM performed better than the traditional MMEM method for daily temperature and monthly *** average monthly temperature projection under representative concentration pathway 8.5(RCP8.5)was expected to be slightly higher than that under RCP4.5;this is contrary to the average monthly precipitation from June to *** variations in streamflow and actual evapotranspiration(ET)were both more sensitive to climate change than to land use *** was no significant relationship between the variations in streamflow and the ET in the study *** work could provide general variation conditions and a range of hydrologic responses to complex and changing environments,thereby assisting with stochastic uncertainty a

关键词： Dry-warm valley Hydrologic simulation Multi-ensemble GCMs Climate change Land use variations

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Can the Grain-for-Green Program Really Ensure a Low Sediment Load on the Chinese Loess Plateau?

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Engineering 2019年第5期5卷 855-864页

作者： Pengcheng Sun Yiping Wu Zhifeng Yang Bellie Sivakumar Linjing Qiu Shuguang Liu yanpeng cai Department of Earth and Environmental Science School of Human Settlements and Civil EngineeringXi’an Jiaotong UniversityXi’an 710049China State Key Laboratory of Water Environment Simulation School of EnvironmentBeijing Normal UniversityBeijing 100875China School of Civil and Environmental Engineering The University of New South WalesSydneyNSW 2052Australia Department of Land Air and Water ResourcesUniversity of CaliforniaDavisCA 95616USA Department of Civil Engineering Indian Institute of Technology BombayMumbai 400076India National Engineering Laboratory for Applied Technology of Forestry and Ecology in South China Central South University of Forestry and TechnologyChangsha 410004China

The Chinese Loess Plateau is the most seriously eroded area in the world and contributes the vast majority of the sediment that goes into the Yellow *** the 1950s,progressive soil and water conservation measures have been implemented—in particular,large-scale ecological restoration has been ongoing since 1999—resulting in a significant reduction of the sediment ***,the mechanism of the sediment transport dynamics is not fully understood due to multiple and complicated influencing factors including climate change and human activities(e.g.,ecological restoration).A challenging question,then,arises:Is the current low sediment level a“new normal”in this era and in the future?To address this question,we selected a typical loess hilly region where considerable ecological restoration has been implemented,and which is regarded as the site of the first and most representative Grainfor-Green program in the Loess *** investigated the evolution of discharge–sediment relationships in the past decades(1960–2010)and their association with the soil and water conservation measures in this *** results showed that there was a distinct change in the regression parameters of the commonly used annual discharge–sediment regression equation—a continuously increasing trend of parameter b and a decreasing trend of parameter a,accompanying the ecological *** increase in exponent b(i.e.,a steeper slope)implies a potential lower sediment load resulting from low discharge and a potential higher sediment load resulting from large *** finding may question the new normal of a low sediment level and implies the potential risk of a large sediment load during extremely wet years.

关键词： Discharge–sediment relationship Ecological restoration Loess hilly region Sediment load Sediment rating parameters

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Deep-sea organisms research oriented by deep-sea technologies development

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Science Bulletin 2022年第17期67卷 1802-1816页

作者： Jing-Chun Feng Jianzhen Liang yanpeng cai Si Zhang Jingchuan Xue Zhifeng Yang Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou 511458China School of Ecology Environmentaland ResourcesGuangdong University of TechnologyGuangzhou 510006China South China Sea Institute of Oceanology Chinese Academy of SciencesGuangzhou 510301China

Deep-sea environment,characterized by high pressures,extremely high/low temperatures,limited photosynthesis-generated organic matter,darkness,and high levels of corrosion,is home to flourishing special ecosystems in the ***,we illustrate how the deep-sea equipment offers insights into the study of life in the deep sea based on the work in the past five *** first describe how organisms in the deep sea are studied,even though it is highly difficult to get access to such extreme *** then explain the role of deep-sea technologies in advancing research on the evolution of organisms in hydrothermal vents,cold seeps,seamounts,oceanic trenches,and whale falls from the following perspectives:biological diversity,mechanisms of environmental adaptation,biological evolution,and ecosystem ***,to better understand the function and service of deep-sea organisms,and further conserve the special creatures under anthropologic activity and climate change,we highlight the importance of innovative deep-sea technologies to promote cutting-edge research on deep-sea organisms,and note the remaining challenges and developing directions for deep-sea equipment.

关键词： Deep sea Extreme life Equipment Biological diversity Environmental adaptation Ecosystem connectivity

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Interactions of Microplastics and Methane Seepage in the Deep-Sea Environment

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Engineering 2023年第10期29卷 159-167页

作者： Jing-Chun Feng Zhifeng Yang Wenliang Zhou Xingwei Feng Fuwen Wei Bo Li Chuanxin Ma Si Zhang Linlin Xia yanpeng cai Yi Wang Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou 511458China Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds Institute of Environmental and Ecological EngineeringGuangdong University of TechnologyGuangzhou 510006China Key Laboratory of Gas Hydrate Guangzhou Institute of Energy ConversionChinese Academy of SciencesGuangzhou 510640China Guangzhou Center for Gas Hydrate Research Chinese Academy of SciencesGuangzhou 510640China

Microplastics(MPs)are important exempla of the Anthropocene and are exerting an increasing impact on Earth’s carbon *** huge imbalance between the MPs floating on the marine surface and those that are estimated to have been introduced into the ocean necessitates a detailed assessment of marine MP ***,we demonstrate that cold seep sediments,which are characterized by methane fluid seepage and a chemosynthetic ecosystem,effectively capture and accommodate small-scale(<100μm)MPs,with 16 types of MPs being *** abundance of MPs in the surface of the sediment is higher in methane-seepage locations than in non-seepage *** seepage is beneficial to the accumulation,fragmentation,increased diversity,and aging of *** turn,the rough surfaces of MPs contribute to the sequestration of the electron acceptor ferric oxide,which is associated with the anaerobic oxidation of methane(AOM).The efficiency of the AOM determines whether the seeping methane(which has a greenhouse effect 83 times greater than that of CO_(2)over a 20-year period)can enter the atmosphere,which is important to the global methane cycle,since the deep-sea environment is regarded as the largest methane reservoir associated with natural gas hydrates.

关键词： Microplastics Anaerobic oxidation of methane Cold seeps Diversity index Fragmentation Gas hydrates

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