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1.
鄱阳湖环湖区生态系统服务价值时空变化及权衡协同关系 总被引：1，自引：0，他引：1
基于修订的当量因子表,结合1988—2020年7期土地利用数据,运用GIS数据处理和空间分析等方法探究了鄱阳湖环湖区生态系统服务价值的时空演变特征,同时引入生态系统服务权衡协同度模型对食物生产、水文调节、土壤保持等7项生态服务功能进行权衡与协同分析。结果表明：① 1988—2020年鄱阳湖环湖区生态系统服务价值从577.95亿元增至592.50亿元,呈先增后减再增的波动变化特征。② 生态系统服务价值的空间分布表现为明显的不均衡性,ESV显著减少的区域为南昌市区、九江市区以及其它各区县的城镇建成区,生态系统服务价值增加的区域均匀分布在研究区东北和西北地区以及靠近研究区外侧的东南和西南地区。③ 协同关系为生态系统服务之间的主导关系,权衡关系较少且主要存在于食物生产与其他服务之间。 相似文献
2.
以香格里拉普达措国家公园为研究区,借助SolVES模型和InVEST模型,分别度量其社会价值（美学价值、文化价值、游憩价值）和生态价值（生境质量、碳储量、水源供给）的空间特征,并运用双变量空间自相关分析对二者空间权衡与协同关系进行研究。研究表明：① 社会价值的高值区呈“多核心,多条状”的空间格局,社会价值指数高达8.6（该指数介于1~10）,且距水体的距离越近对社会价值的贡献越大（贡献度为45.9%）;② 生态价值良好及优的空间范围占园区面积的1/2（49.91%）,主要位于原始森林保存良好的碧塔海片区和尼汝东北部扎诺一带;③ 社会价值与生态价值之间存在显著的空间依赖性,其中社会价值低,生态价值高的区域是园区最主要的空间聚集特征。该研究可为生态系统服务的可持续管理决策提供科学依据,以及有助于完善基于生态系统服务的社会?生态系统分析理论框架。 相似文献
3.
鄂尔多斯市生态系统服务权衡与协同分析 总被引：2，自引：0，他引：2
鄂尔多斯市是中国北方农牧交错带的中心,经济快速发展的同时带来生态环境巨大的压力,该区域生态系统服务及其相互关联的变化对半干旱地区的可持续发展具有重要意义。本文基于2000、2010年鄂尔多斯市的食物供给、碳储存、产水量以及土壤保持4种关键生态系统服务供给核算,采用相关分析探究栅格尺度上4种服务之间的权衡与协同关系,并引入玫瑰图对比不同土地利用类型的生态系统服务关联特征差异。研究结果表明：①2000-2010年鄂尔多斯市生态系统服务整体增强,平均食物供给量由99.5 kg·hm-2增至224.2 kg·hm-2,碳储存量由8.32 t·hm-2增至8.41 t·hm-2,平均产水量由153.64 mm增至291.90 mm,土壤保持量平均值由47.79 kg·hm-2增至59.04 t·hm-2;②产水与土壤保持之间存在协同关系(相关系数分别为0.972和0.771),食物供给与土壤保持之间存在协同关系(相关系数分别为0.505、0.736),食物供给和碳储存之间存在权衡关系(相关系数分别为-0.584、-0.512);③多重生态系统服务供给的热点区主要分布在鄂尔多斯市东部;④产水量和土壤保持、碳储存在耕地和林地中呈现此消彼长的变化方式,而在草地中4种生态系统服务同时增加。 相似文献
4.
The purpose of this paper is to explore the trade-offs and synergies of multifunctional cultivated land (MCL) at multiple scales. The study area is Wuhan Metropolitan Area, China. The entropy method and the method of Spearman's rank correlation were employed for the analysis of combined land use/cover data, administrative division data, population data and statistical yearbook data, from the multi-scale perspectives of cities, counties and townships. The results showed that: (1) The multi-functionality of cultivated land had obvious spatial differences and its overall spatial patterns were relatively robust, which did not change very much at the single scale. (2) At each single scale, the MCL's trade-offs and synergies had spatial heterogeneity. (3) Scale effects existed in the MCL's trade-offs and synergies. From the prefecture-level city scale, to the county scale, and to the township scale, the MCL's trade-offs were changed to synergies, and some synergic relationships were enhanced. This article contributes to the literature by deepening the multiscale analysis of trade-offs and synergies of multifunctional cultivated land. The conclusions might provide a basis for helping policy-makers to implement protection measures for the multi-functionality of cultivated land at the right spatial scale, and to promote the higher-level synergies of multifunctional cultivated land to realize its sustainable use. 相似文献
5.
ABSTRACTConcerns about the water–energy–food (WEF) nexus have motivated many discussions regarding new approaches for managing water, energy and food resources. Despite the progress in recent years, there remain many challenges in scientific research on the WEF nexus, while implementation as a management tool is just beginning. The scientific challenges are primarily related to data, information and knowledge gaps in our understanding of the WEF inter-linkages. Our ability to untangle the WEF nexus is also limited by the lack of systematic tools that could address all the trade-offs involved in the nexus. Future research needs to strengthen the pool of information. It is also important to develop integrated software platforms and tools for systematic analysis of the WEF nexus. The experience made in integrated water resources management in the hydrological community, especially in the framework of Panta Rhei, is particularly well suited to take a lead in these advances. 相似文献
6.
基于多源地理数据融合的黑河中游土地多功能性时空格局与权衡研究 总被引：1，自引：0，他引：1
土地多功能利用是提高土地利用效率、缓解人地矛盾、促进区域可持续发展的重要途径。研究构建了“生产-生活-生态”功能的土地多功能性评价指标体系,基于3 km×3 km格网,融合了遥感、统计、POI等多源地理数据,利用投影寻踪模型对黑河中游土地多功能性进行评价,通过变量相关分析和双变量局部空间自相关分析,揭示了土地多功能权衡与协同关系,并采用RGB三通道合成与二阶聚类分析相结合进行土地功能分区。结果表明:(1)黑河中游在不同利用方式下呈现不同功能,在走廊平原区土地功能以生产功能为主导,生活功能和生态功能为辅。生产功能在走廊绿洲农业区优势明显,生活功能高值区集中于城镇等基础设施条件较好的地区,祁连山、龙首山发挥着生态屏障作用。(2)研究时段内,土地多功能性稳中增强。土地多功能性与一级功能的空间格局保持稳定,土地功能间协调性普遍增强,不同功能在空间上日益重叠。(3)按照主导利用方向,土地可划分为以农业生产与城镇空间为主体的重点开发区、优化开发区和适度开发区,以及以生态空间为主的生态屏障区、生态缓冲区和生态修复区。(4)土地多功能利用仍有提升空间,尤其要加强对非主导功能的关注,协调功能间的固有矛盾;统筹推进生态修复,关注自然资本增值,从构建区域绿水青山的格局挖掘土地价值新的增长点。 相似文献
7.
Revealing ecosystem services relationships and their driving factors for five basins of Beijing 总被引：1，自引：1，他引：0
A clear understanding of the relationships among multiple ecosystem services(ESs) is the foundation for sustainable urban ecosystem management. Quantitatively identifying the factors that influence ES trade-offs and synergies can contribute to deepening ES research, from knowledge building to decision making. This study simulated soil conservation, water yield and carbon sequestration in Beijing, China, from 2015–2018. The spatial trade-offs and synergies of these three ESs within the five major river basins in Beijing were explored using geographically weighted regression. Furthermore, geographical detector was applied to quantitatively identify the driving mechanism of the environmental factors for the ES trade-offs and synergies. The results show the following:(1) the spatial relationships between soil conservation and water yield, as well as between water yield and carbon sequestration, were mainly trade-offs. There was a spatial synergy between soil conservation and carbon sequestration.(2) Regarding the spatial trade-off/synergy between soil conservation and water yield in Beijing, the dominant influencing factor was temperature/elevation, and the dominant interactions of the spatial trade-off and synergy between these two ESs in Beijing and the Chaobai River Basin are all manifested in the superposition of precipitation and potential evapotranspiration, temperature, and elevation.(3) Topographic factors were the dominant factors influencing the spatial relationship between soil conservation and carbon sequestration in Beijing and its five major river basins. As a result of the distribution of water systems and hydrological characteristics of the basins, differences were observed in the effects of different combinations of interaction factors on the spatial relationship between these two ESs in different basins.(4) Temperature had the strongest explanatory power in terms of the spatial trade-offs and synergies between water yield and carbon sequestration. The interactions between precipitation and temperature and between precipitation and elevation were the dominant interactions affecting the spatial relationship between water yield and carbon sequestration in Beijing. Overall, the explanatory power of influencing factors on the trade-offs and synergies and the degree of interaction between factors coexist in different basins with consistency and differences. Therefore, understanding the quantitative characteristics of basin-scale spatial trade-offs and synergies between ESs is important for ecosystem management and the promotion of synergy in different basins. 相似文献
8.
生态系统服务权衡与协同视角下的重点生态功能区保护特征 总被引：1，自引：0，他引：1
重点生态功能区提供着源源不断的生态系统服务,在保障国家生态安全和社会可持续发展方面,有着不可或缺的基础作用。但是,以生态系统服务权衡与协同关系为视角,进而探讨分析重点生态功能区保护特征的研究案例相对较少。本文以秦巴重点生态功能区为评估分析区域,选择自然地理条件相似度极高的秦巴山区为参照单元,以生态系统供给服务与调节服务为核心内容,在定量分析2000—2019年期间的生态空间变化特征基础上,分析评估生态系统服务权衡与协同关系。结果表明：秦巴山区生态状况逐渐变好,重点生态功能区划定之后,生态系统趋于稳定;重点生态功能区服务能力呈逐渐增强的趋势,平均净初级生产力、土壤保持总量和水源涵养总量比重点生态功能区外分别高出了25.95 gC/m2、5.81亿t和24.95亿m3;土壤保持服务和生态系统供给服务的协同关系与生态状况改善呈正相关;由于受到降水的影响,2010年之后的水源涵养服务与生态系统供给服务的协同关系变差。总体来看,秦巴重点生态功能区的划定带动了区域生态空间“量的增长”和生态系统服务“质的提升”,但生态系统服务之间关系的“协调性”仍然不足,甚至从“协同”转为“权衡”关系,这要求未来国家需要制定更有针对性的生态系统保护管理决策,提高生态系统总体效益,支撑区域生态系统服务的可持续供给。 相似文献
9.
生态系统服务的时空变化受环境因子和服务间权衡/协同两个维度的驱动。在保障区域与国家生态安全、经济与社会可持续发展的生态保护红线区,厘清生态系统服务的驱动机制对该区生态系统的管理优化尤为重要。本文以北京生态保护红线区为例,考虑土壤保持、产水量和植被固碳3项生态系统服务,运用地理探测器判断并识别生态系统服务间关系的影响变量,进而基于偏相关方法定量分离并比较服务间净关系与环境变量两个维度对生态系统服务的影响。结果表明：对任一生态系统服务而言,环境变量和服务间关系对其空间异质性有不同程度的影响,且两种变量之间的交互作用均会增强单一变量对该生态系统服务空间分异的决定力。各服务形成过程的差异性使得影响服务间关系的重要环境因子存在区别,但土地利用强度均是3对服务空间关系的极重要因子,表明北京生态保护红线区土地利用的合理规划对该区生态系统服务的协同优化至关重要。剔除极重要因子后比较服务间净关系与环境变量对生态系统服务的影响,结果发现：环境变量（坡度和降水）对土壤保持时空变化的驱动力更强;降水和植被固碳服务两个维度对产水量的影响相近;植被固碳的时空变化与其他两项服务密切相关,环境变量的影响相对较小。 相似文献
10.
多情景模拟下粤港澳大湾区生态系统服务评估与权衡研究 总被引：4，自引：0，他引：4
城镇化快速发展导致区域的生态系统服务衰减,威胁城市的生态安全;掌握城市群地区生态系统服务权衡/协同关系量化,对提升生态系统服务总体效益和维护区域生态安全至关重要。以粤港澳大湾区为研究区域,利用InVEST模型对粤港澳大湾区1995—2018年间产水服务、固碳服务、土壤保持服务、食物供给服务共4项生态系统服务进行评估,设定历史趋势情景、规划情景和生态保护情景,借助GeoSOS-FLUS模型进行2030年生态系统服务情景分析,探讨各种生态系统服务之间的权衡/协同关系。结果表明：① 1995—2018年间,粤港澳大湾区产水服务出现增加趋势,固碳服务、土壤保持服务和食物供给服务出现下降趋势。② 不同类型生态系统服务变化存在明显的区域异质性,产水服务高值区域其值增大,低值区域其值减小;固碳服务低值区域,其值下降更大;除香港外,土壤保持量减小的区域呈零星状分布;食物供给高值及减小的最大值位于东莞、佛山、中山和深圳等中部区域。③ 产水服务在规划情景下达到最佳,固碳服务和土壤保持服务在生态保护情景下最佳,历史趋势情景下食物供给服务最佳,生态系统服务综合效益在生态保护情景下达到最佳。④ 历史趋势情景下生态系统服务之间的权衡程度最大,生态保护情景下各项生态系统服务之间的协同程度较高。基于生态耦合模型进行粤港澳大湾区生态系统服务估算,揭示生态系统服务权衡或协同的变化关系及作用机理,可为区域生态系统服务管理和社会经济发展规划提供参考。 相似文献