Ecosystem service values of gardens in the Yellow River Basin, China

来源 :干旱区科学 | 被引量 : 0次 | 上传用户:ysabby2008
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Studies on the ecosystem service value (ESV) of gardens are critical for informing evidence- based land management practices based on an understanding of the local ecosystem. By analyzing equivalent value factors (EVFs), this paper evaluated the values of 11 ecosystem services of gardens in the Yellow River Basin of China in 2019. High-precision land use survey data were used to improve the accuracy of the land use classification, garden areas, and spatial distribution of the ESVs of gardens. The results showed that garden ecosystem generally had high ESVs, especially in terms of the ESV of food production, which is worthy of further research and application to the practice of land use planning and management. Specifically, the value of one standard EVF of ecosystem services in 2019 was 3587.04 CNY/(hm2?a), and the ESV of food production of gardens was much higher than that of croplands. Garden ecosystem provided an ESV of 1348.66×108 CNY/a in the Yellow River Basin. The areas with the most concentrated ESVs of gardens were located in four regions: downstream in the Shandong-Henan zone along the Yellow River, mid-stream in the Shanxi-Shaanxi zone along the Yellow River, the Weihe River Basin, and upstream in the Qinghai-Gansu-Ningxia-Inner Mongolia zone along the Yellow River. The spatial correlation of the ESVs in the basin was significant (global spatial autocorrelation index Moran\'s I=0.464), which implied that the characteristics of high ESVs adjacent to high ESVs and low ESVs adjacent to low ESVs are prominent. In the Yellow River Basin, the contribution of the ESVs of gardens to the local environment and economy varied across regions. We also put forward some suggestions for promoting the construction of ecological civilization in the Yellow River Basin. The findings of this study provide important contributions to the research of ecosystem service evaluation in the Yellow River Basin.
其他文献
数列是一种特殊的函数.函数具有周期性,数列也是如此.数列的周期现象在数列问题中屡见不鲜.很多学生感觉神龙见首不见尾,摸不着头脑.其实,求解周期数列问题还是有规律可循的.下面归纳周期数列的常见类型,并给出相应的求解策略.
期刊
为探讨广场舞锻炼与老年人死亡焦虑的关系及其作用机制,采用《死亡焦虑量表》《社会支持量表》《自我效能感量表》对385名60岁以上的老年人进行调查.结果表明:1)广场舞锻炼、社会支持、自我效能感和死亡焦虑彼此间显著相关.2)社会支持在广场舞锻炼和死亡焦虑间起单独中介作用,占总效应的38.84%;社会支持和自我效能感在广场舞锻炼和死亡焦虑间起链式中介效应,占总效应的15.03%.结论:广场舞锻炼通过社会支持和自我效能感的链式中介效应间接影响老年人的死亡焦虑水平;在老龄化背景下,广场舞锻炼对老年人的心理健康有积极
标志性体育赛事发展对我国体育产业高质量发展与体育强国建设具有重要意义.本研究立足于标志性体育赛事发展的微观视角,运用扎根理论的质性研究方法,通过开放性编码、主轴编码、选择性编码三级编码技术,挖掘标志性体育赛事多元互动高质量发展的影响因素,并剖析各影响因素间的多元互动关系,实现对标志性体育赛事的综合性分析.研究发现居民赛事认同、赛事品牌形象、举办地意向、参与意愿、感知价值、感知地区综合实力构成了标志性体育赛事多元互动高质量发展的影响因素.在此基础上,梳理各影响因素故事线逻辑,构建出标志性体育赛事多元互动高质
本文利用国家统计局和国家体育总局发布的相关经济数据,采用投入产出方法,从供给侧、需求侧两个层面及产业结构角度实证考察了中国体育产业发展的动力演进及其趋势.研究结果表明:1)以2015年经济发展进入新常态为分界点,支撑中国体育产业发展的供给动力由资本、劳动力等要素资源的积累转向要素生产率的提高;支撑中国体育产业发展的结构动力由体育制造业转向体育服务业;2)支撑中国体育产业发展的需求动力一直是消费,城镇居民消费和出口对体育产业发展的贡献率较高,农村居民消费和资本形成对体育产业发展的贡献率较低;3)中国体育产业
加强反兴奋剂法治建设研究对解决兴奋剂纠纷事件、运动员权利保障以及兴奋剂处罚规制等现实问题具有重要意义.目前我国反兴奋剂法治建设研究存在对内审视不足,对外接轨不畅,专项立法缺失,法治实施、监督、保障体系不完善以及防控机制构建不全面五大问题.基于研究问题,结合相关政策文本及已有研究,提出解决问题的实践思路,为开展反兴奋剂相关研究提供理论指导.本研究依据我国法治建设要求,提出未来反兴奋剂法治建设研究“两步走”战略,即“十四五”时期以“法治教育与惩罚”并重为主进行反兴奋剂治理研究,“十四五”后到2035年以“专项
Qinghai Lake is the largest saline lake in China. The change in the lake volume is an indicator of the variation in water resources and their response to climate change on the Qinghai-Tibetan Plateau (QTP) in China. The present study quantitatively evalua