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Spatially Heterogeneous Response of Carbon Storage to Land Use Changes in Pearl River Delta Urban Agglomeration, China

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Chinese Geographical Science 2023年第2期33卷 271-286页

作者： liu Wei liu dianfeng liu Yang School of Resource and Environmental Science Wuhan UniversityWuhan 430079China Key Laboratory of Digital Cartography and Land Information Application Engineering Ministry of Natural ResourcesWuhan 430079China Guangzhou Urban Planning and Design Survey Research Institute Guangzhou 510060China Guangdong Enterprise Key Laboratory for Urban Sensing Monitoring and Early WarningGuangzhou 510060China

Carbon storage of terrestrial ecosystems plays a vital role in advancing carbon neutrality. Better understanding of how land use changes affect carbon storage in urban agglomeration will provide valuable guidance for policymakers in developing effective regional conservation policies. Taking the Pearl River Delta Urban Agglomeration(PRDUA) in China as an example, we examined the heterogeneous response of carbon storage to land use changes in 1990–2018 from a combined view of administrative units and physical entities. The results indicate that the primary change in land use was due to the expansion of construction land(5897.16 km2). The carbon storage in PRDUA decreased from 767.34 Tg C in 1990 to 725.42 Tg C in 2018 with a spatial pattern of high wings and the low middle. The carbon storage loss was largely attributed to construction land expansion(55.74%), followed by forest degradation(54.81%). Changes in carbon storage showed significant divergences in different sized cities and hierarchical boundaries. The coefficients of geographically weighted regression(GWR) reveal that the alteration in carbon storage in Guangzhou City was more responsive to changes in construction land(-0.11) compared to other cities, while that in Shenzhen was mainly affected by the dynamics of forest land(8.32). The change in carbon storage was primarily influenced by the conversion of farmland within urban extent(5.05) and the degradation of forest land in rural areas(5.82). Carbon storage changes were less sensitive to the expansion of construction land in the urban center, urban built-up area, and ex-urban built-up area, with the corresponding GWR coefficients of 0.19, 0.04, and 0.02. This study necessitates the differentiated protection strategies of carbon storage in urban agglomerations.

关键词： land use change carbon storage Integrated Valuation of Ecosystem Services and Trade-offs(InVEST)model hierarchical urban boundaries Pearl River Delta Urban Agglomeration(PRDUA) China

Identifying Restructuring Types of Rural Settlement Using Social Network Analysis:A Case Study of Ezhou City in Hubei Province of China

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Chinese Geographical Science 2021年第6期31卷 1011-1028页

作者： YUE Qiaobing HE Jianhua liu dianfeng School of Resource and Environmental Sciences Wuhan UniversityWuhan430079China Key Laboratory of Geographic Information Systems Ministry EducationWuhan430079China

Social interaction has become one of the key factors affecting the spatial reconstruction of rural settlements(SRRS).However,most studies ignored the multi-scale impact of social networks on the identification of restructuring types of rural *** paper,taking Ezhou City of Hubei Province,China as the case study area,developed a potential inter-settlement network through considering settlements as nodes,and inter-settlement interactions induced by the spatial disparity of public facilities as edges,divided towns in Ezhou City into three zones based on community structure at the town level,and then identified four types of rural settlements in light of the characteristics of cluster patterns and centrality at the patch *** results show that the inter-settlement network in Ezhou City presents apparent disparities in terms of community structure,cluster patterns and *** community analysis,high inter-community and intra-community interactions are concentrated in well-developed areas in the north and east,while weak interactions between communities occur in the southern areas dominated by traditional agricultural ***,three zones are divided such as the urban-leading zone,urban-rural integration zone and rural-leading *** the network centrality and cluster patterns,high-level rural settlements are mainly distributed in the urban-leading zone,followed by the urban-rural integration zone and the rural-leading ***,the lump cluster pattern is observed in each zone,but the chain pattern and dispersed pattern largely occur in the rural-leading *** same time,four types of rural settlements are identified,namely urbanized settlements,central settlements,grassroots settlements and relocated *** corresponding plans are discussed in different zones regarding urbanization,integration and characteristics to provide meaningful insights for policymakers to guide *** study would contribute to our understan

关键词： rural settlement reconstruction public service facility inter-settlement network spatial differences zonal division

Exploring the spatio-temporal impacts of farmland reforestation on ecological connectivity using circuit theory:A case study in the agro-pastoral ecotone of North China

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Journal of Geographical Sciences 2020年第9期30卷 1419-1435页

作者： liu Xiaojing liu dianfeng ZHAO Hongzhuo HE Jianhua liu Yaolin School of Resource and Environmental Science Wuhan UniversityWuhan 430079China Key Laboratory of Digital Cartography and Land Information Engineering Ministry of Natural ResourcesWuhan UniversityWuhan 430079China Collaborative Innovation Center for Geospatial Information Science Wuhan UniversityWuhan 430079China

Farmland reforestation can contribute substantially to ecological *** studies have extensively examined the ecological effects of farmland reforestation,but few of them have investigated the spatiotemporal responses of broad-scale landscape connectivity to *** using a typical agro-pastoral ecotone in northern China as a case study,we addressed this issue based on an innovative integration of circuit theory approach and counterfactual *** forest connectivity through multiple dispersal pathways was measured using the circuit theory approach,and its spatiotemporal changes after reforestation were evaluated by counterfactual *** results showed that from 2000–2015,the reforested farmland occupied 2095 km^2,and 12.5% was on steeply sloped *** reforestation caused a greater increase in ecological connectivity by adding new ecological corridors and stepping stones in scattered forest areas rather than in areas with dense forest *** newly added corridors and stepping stones were fragmented,short and narrow and thus deserve powerful *** reforestation to improve landscape connectivity should highlight pinch point protection and obstacle removal as well as the tradeoff between farmland loss and farmer *** findings are expected to inform the optimization of the Grain for Green policy from the perspective of broad-scale biodiversity conservation.

关键词： farmland reforestation ecological connectivity circuit theory land use change agro-pastoral ecotone China

Rural land use spatial allocation in the semiarid loess hilly area in China:Using a Particle Swarm Optimization model equipped with multi-objective optimization techniques

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Science China Earth Sciences 2012年第7期55卷 1166-1177页

作者： liu YaoLin liu dianfeng liu YanFang HE JianHua JIAO LiMin CHEN YiYun HONG XiaoFeng School of Resource and Environment Science Wuhan UniversityWuhan 430079China Ministry of Education Key Laboratory of Geographic Information System Wuhan UniversityWuhan 430079China

Semiarid loess hilly areas in China are enduring a series of environmental conflicts between urban expansion,cultivated land conservation,soil erosion and water shortage,and require land use allocation to reconcile these environmental *** argue that the optimized spatial allocation of rural land use can be achieved by a Particle Swarm Optimization (PSO) model in conjunction with multi-objective optimization *** study focuses on Yuzhong County of Gangsu Province in China,a typical catchment on the Loess Plateau,and proposes a land use spatial optimization *** model maximizes land use suitability and spatial compactness based on a variety of constraints,*** land use structure and restrictive areas,and employs an improved PSO algorithm equipped with a determinant initialization method and a dynamic weighted aggregation (DWA) method to obtain the optimized land use spatial *** results suggest that (1) approximately 4% of land use should be reallocated and these changes would alleviate the environmental conflicts in the study area;(2) the major reshuffling is slope farmland and newly added construction and cultivated land,whereas the unchanged areas are largely forests and basic farmland;and (3) the PSO is capable of optimizing rural land use allocation,and the determinant initialization method and DWA can improve the performance of the PSO.

关键词： spatial allocation rural land use particle swarm optimization multi-objective optimization Loess Plateau

Earthworms' Transcriptome and Gut Microbiota Response to Mineral Weathering

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Acta Geologica Sinica(English Edition) 2017年第S1期91卷 153-154页

作者： liu dianfeng LIAN Bin WU Chunhao GUO Peijun Puyang Vocational & Technical Institute Nanjing Normal University

1 Introduction Earthworms are an important component of soil macrofauna,dominating the biomass of soil invertebrates(Kodama et al.,2014;Plum and Filser,2005).They are known as the"engineers of ecosystem",and have a

关键词： soil Earthworms Transcriptome and Gut Microbiota Response to Mineral Weathering gene

基于多元国土空间整治情景模拟的生态系统服务功能分区

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农业工程学报 2021年第22期37卷 262-270页

作者：周子康刘殿锋武汉大学资源与环境科学学院武汉430079

生态系统服务功能分区是科学管理生态系统的重要手段。国土空间整治能够通过综合治理闲置、低效和生态退化国土资源,改变国土空间结构与布局,从而对生态系统功能产生影响。现有研究较少关注土地整治措施对未来生态系统服务空间集聚模式... 详细信息

生态系统服务功能分区是科学管理生态系统的重要手段。国土空间整治能够通过综合治理闲置、低效和生态退化国土资源,改变国土空间结构与布局,从而对生态系统功能产生影响。现有研究较少关注土地整治措施对未来生态系统服务空间集聚模式的潜在影响作用,整治措施的生态导向性有待提升。因此,该研究以山东招远市为例,设计了基准情景、废弃矿区修复情景以及城乡建设用地整治情景,定量化预测生态系统服务变化特征,并运用模糊C均值聚类算法开展生态系统功能区划定。结果表明,整治情景下土地利用数量结构变化显著,各生态系统服务能力均有所提升。全域可以划分为生态综合区、生境保育区、固碳释氧区、固碳产粮区、生态维护区5个生态功能区。与基准情景相比,废弃矿区修复情景下各生态功能区60%生态系统服务水平持平,28%处于劣势,仅12%显著提升。城乡建设用地整治则能够显著提升全域自然娱乐能力,总体增长了1.89%。生境保育区的自然娱乐和粮食生产能力平均值分别增加了0.01和0.10,固碳释氧区的生境质量、水源涵养能力分别增长了20.69%和100%。研究表明全面提升生态系统多功能性需要综合开展多元的国土空间整治措施。

关键词：土地利用整治生态系统服务生态功能分区 FCM聚类

一种知识约束下的多目标土壤空间抽样优化模型

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武汉大学学报（信息科学版） 2014年第11期39卷 1282-1286页

作者：刘殿锋刘艳芳武汉大学资源与环境科学学院湖北武汉430079 武汉大学地理信息系统教育部重点实验室湖北武汉430079

土壤空间抽样优化需要综合考虑抽样精度、成本、代表性以及样点数量与空间布局等多目标,属于典型的NP-Hard空间优化决策问题。先验知识的应用以及多目标的博弈能够有效地提高抽样精度和效率。通过研究土壤空间抽样先验知识及其空间分层... 详细信息

土壤空间抽样优化需要综合考虑抽样精度、成本、代表性以及样点数量与空间布局等多目标,属于典型的NP-Hard空间优化决策问题。先验知识的应用以及多目标的博弈能够有效地提高抽样精度和效率。通过研究土壤空间抽样先验知识及其空间分层技术,以及土壤空间抽样方案与粒子群算法映射关系,建立了基于知识约束下多目标粒子群算法的土壤空间抽样优化模型。模型以最小克里金方差和最大熵为抽样目标,以分层最小样本量、空间阻隔和可达性为约束条件,结合目标规划法进行多目标帕累托优化方案求解,并以陕西省横山县为实验区验证了模型的有效性。实验结果表明,该模型相比传统方法具有较高的收敛效率和抽样精度,先验知识与目标规划法的应用显著提升了抽样方案代表性,能够为土壤空间抽样以及土壤质量监测网络构建提供新的技术支撑。

关键词：空间抽样土壤粒子群目标规划多目标优化

顾及耕地占补平衡的土地利用变化及其效应多情景模拟

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武汉大学学报（信息科学版） 2023年第9期48卷 1499-1511页

作者：王寅杰刘殿锋武汉大学资源与环境科学学院湖北武汉430079 数字制图与国土信息应用工程自然资源部重点实验室湖北武汉430079 湖北珞珈实验室湖北武汉430079

占补平衡是中国耕地保护的重要措施之一。在耕地保护政策从传统数量规模保护为主向数量-质量-生态一体化保护的发展过程中,较少有研究系统地分析不同占补平衡策略的未来潜在影响作用。以中国山东省招远市为例,构建了顾及耕地占补平衡策... 详细信息

占补平衡是中国耕地保护的重要措施之一。在耕地保护政策从传统数量规模保护为主向数量-质量-生态一体化保护的发展过程中,较少有研究系统地分析不同占补平衡策略的未来潜在影响作用。以中国山东省招远市为例,构建了顾及耕地占补平衡策略的多情景土地利用变化模拟模型,通过设计基准情景、耕地数量保护、耕地数量-质量保护、耕地数量-生态保护和耕地数量-质量-生态保护5个情景,分析2030年不同耕地保护策略下耕地规模、生产力和生境质量的演化规律。结果表明,相较于基准情景,耕地占补平衡情景下耕地数量平均提高了7.2%,粮食产量、生境质量分别平均提升了0.63%和0.70%,其中耕地数量-质量-生态保护情景下粮食产量和生境质量均高于平均水平。因此,耕地数量-质量-生态保护情景更有利于多种目标的协同优化。本研究为系统地对比评估多种占补平衡策略,优化耕地保护政策提供了方法支持。

关键词：耕地占补平衡多情景模拟土地利用变化系统动力学生态效应

多情景退耕还林对林地生物多样性保护价值的潜在影响

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农业工程学报 2022年第20期38卷 239-249页

作者：赵兵兵刘殿锋武汉大学资源与环境科学学院武汉430079 数字制图与国土信息应用工程自然资源部重点实验室武汉430079

退耕还林对生物多样性保护具有显著的正向影响,评估其生物多样性保护生态服务价值意义重大。现有研究多采用当量法计算生物多样性保护的生态服务价值,但该方法未考虑不同林地类型的差异化生物多样性价值,因而难以实现空间精细化评估。... 详细信息

退耕还林对生物多样性保护具有显著的正向影响,评估其生物多样性保护生态服务价值意义重大。现有研究多采用当量法计算生物多样性保护的生态服务价值,但该方法未考虑不同林地类型的差异化生物多样性价值,因而难以实现空间精细化评估。该研究从生态连通视角切入,以云南省保山市施甸县为例,根据坡度和相关政策设定1种现状情景(情景I)与3种退耕情景(情景Ⅱ、情景Ⅲ与情景Ⅳ),采用形态空间模式识别生态源地、指数法分析生态连通性和斑块重要性,进而计算各情景下的生物多样性保护的生态服务价值。在此框架中,该研究通过空间精细化手段修正各类林地的当量因子系数。结果表明:随着物种扩散距离的增加,生态连通性增加,情景Ⅱ、Ⅲ和Ⅳ的森林的生物多样性保护的生态服务价值均呈现增加趋势,依次增加了3.02×10^(7)、4.7×10^(6)和1.57×10^(7)元,更有助于增加生物多样性保护生态服务价值的退耕方式是情景Ⅱ;从修正当量角度看,情景Ⅱ、Ⅲ和Ⅳ的修正当量系数分别为1.51、1.46和1.47,最有利的退耕情景为退耕程度最小的情景Ⅱ,而退耕程度最大的情景Ⅲ却没有取得相应的成效。研究表明,除退耕程度外,栖息地空间结构和分布也是影响生物多样性保护价值的因素,三者共同构成确定退耕还林形式和建立生态补偿机制的关键依据。同时,该研究通过实地调研和回归模型验证了结果的准确性,为探究其他区域提供理论依据。

关键词：退耕还林生物多样性生态系统服务生态连通性修正当量