基于2005—2015年武汉城市圈土地利用变化过程,采用专家打分法对"中国生态系统单位面积生态服务价值当量表"进行修订,定量测算生态服务价值(ESV,Ecological Service Values)并比较不同功能与服务,分析武汉城市圈ESV的时空演...基于2005—2015年武汉城市圈土地利用变化过程,采用专家打分法对"中国生态系统单位面积生态服务价值当量表"进行修订,定量测算生态服务价值(ESV,Ecological Service Values)并比较不同功能与服务,分析武汉城市圈ESV的时空演变特征,以生态服务估算价值为基础构造了经济、景观与ESV三者之间的双对数空间回归计量模型;挖掘ESV时空变化的驱动因素,为区域生态系统管理提供科学基础。研究结果表明:2005—2015年间,武汉城市圈ESV逐年减少,2005年为176.175亿元,2010年为169.296亿元,2015年为153.717亿元;ESV在空间上呈现较为显著的地区空间差异,呈现以武汉市区为圆心的由外向内环层递减结构;从不同功能价值和单项服务来看,区域生态功能的调节服务>文化服务>供给服务,其中食物生产又是最为主要的单项服务功能,且在历年价值逐渐减少的同时保持相对稳定变化;驱动力影响机理的研究结果表明,生态服务价值总量与单项服务价值均与农村居民人均可支配收入和景观AI(Agglomeration Index)聚集度指数呈显著的负相关关系,与农业总产值显著正相关。社会经济的快速发展和区域景观格局的改变影响着生态系统的格局特征与生态过程,社会经济发展与景观演变一起共同影响与作用于生态服务功能并表征于货币经济核算价值的相对正负变化,为开展区域生态功能保护与补偿、促进区域性可持续发展提供了科学参考。展开更多
Evapotranspiration （ET） is the sum of soil or water body evaporation and plant transpiration from the earth surface and ocean to the atmosphere, and thus plays a significant role in regulating carbon and water resou...Evapotranspiration （ET） is the sum of soil or water body evaporation and plant transpiration from the earth surface and ocean to the atmosphere, and thus plays a significant role in regulating carbon and water resource cycles. The time-series data set from the remote sensing MOLDS product （MOD16） was used to study the spatial-temporal evolution of vegetation evapotranspiration in salinized areas during 2000-2014 by analyzing the variability, spatial patterns and Mann-Kendall （MK） nonparametric trends for the time series. The results indicate that inter-annual and intra-annual variations of ET across various vegetated areas show seasonal changes, with the abnormal months identified. The Cultivated land displays a greater degree of spatial heterogeneity and the spatial pattern of ET in the area covered by broadleaved deciduous forests corresponds to a higher ET rate and increased water consumption. Awidespread decline of ET is observed only in cultivated areas. However, agricultural cultivation doesn＇t worsen water shortage and soil salinization problems in the region, and water shortage problems are worsening for other vegetated areas. This research provides a basis of reference for the reasonable allocation of water resources and restructuring of vegetation patterns in salinized areas.展开更多
文摘基于2005—2015年武汉城市圈土地利用变化过程,采用专家打分法对"中国生态系统单位面积生态服务价值当量表"进行修订,定量测算生态服务价值(ESV,Ecological Service Values)并比较不同功能与服务,分析武汉城市圈ESV的时空演变特征,以生态服务估算价值为基础构造了经济、景观与ESV三者之间的双对数空间回归计量模型;挖掘ESV时空变化的驱动因素,为区域生态系统管理提供科学基础。研究结果表明:2005—2015年间,武汉城市圈ESV逐年减少,2005年为176.175亿元,2010年为169.296亿元,2015年为153.717亿元;ESV在空间上呈现较为显著的地区空间差异,呈现以武汉市区为圆心的由外向内环层递减结构;从不同功能价值和单项服务来看,区域生态功能的调节服务>文化服务>供给服务,其中食物生产又是最为主要的单项服务功能,且在历年价值逐渐减少的同时保持相对稳定变化;驱动力影响机理的研究结果表明,生态服务价值总量与单项服务价值均与农村居民人均可支配收入和景观AI(Agglomeration Index)聚集度指数呈显著的负相关关系,与农业总产值显著正相关。社会经济的快速发展和区域景观格局的改变影响着生态系统的格局特征与生态过程,社会经济发展与景观演变一起共同影响与作用于生态服务功能并表征于货币经济核算价值的相对正负变化,为开展区域生态功能保护与补偿、促进区域性可持续发展提供了科学参考。
基金financial support from the National Key Research and Development Program of China(2017YFC1502404)the National Natural Science Foundation of China(41601562 and 41761014)+1 种基金the China Institute of Water Resources and Hydropower Research Team Construction and Talent Development Project(JZ0145B752017)the Research Project for Young Teachers of Fujian Province,China(JAT160085)
文摘Evapotranspiration （ET） is the sum of soil or water body evaporation and plant transpiration from the earth surface and ocean to the atmosphere, and thus plays a significant role in regulating carbon and water resource cycles. The time-series data set from the remote sensing MOLDS product （MOD16） was used to study the spatial-temporal evolution of vegetation evapotranspiration in salinized areas during 2000-2014 by analyzing the variability, spatial patterns and Mann-Kendall （MK） nonparametric trends for the time series. The results indicate that inter-annual and intra-annual variations of ET across various vegetated areas show seasonal changes, with the abnormal months identified. The Cultivated land displays a greater degree of spatial heterogeneity and the spatial pattern of ET in the area covered by broadleaved deciduous forests corresponds to a higher ET rate and increased water consumption. Awidespread decline of ET is observed only in cultivated areas. However, agricultural cultivation doesn＇t worsen water shortage and soil salinization problems in the region, and water shortage problems are worsening for other vegetated areas. This research provides a basis of reference for the reasonable allocation of water resources and restructuring of vegetation patterns in salinized areas.
