期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
基于标准降水指数的黑龙江省气象干旱特征分析 被引量:7
1
作者 赵茹欣 王会肖 +2 位作者 杨会彩 马美红 董宇轩 《节水灌溉》 北大核心 2017年第12期56-62,67,共8页
以黑龙江省27个气象站点1959-2014年的逐月降水数据为基础,计算不同时间尺度的标准降水指数,结合主成分分析法分析该省气象干旱的严重程度、影响范围、时空分布的多时间尺度特性。结果表明,黑龙江发生气象干旱的频率约为30%,省内气象干... 以黑龙江省27个气象站点1959-2014年的逐月降水数据为基础,计算不同时间尺度的标准降水指数,结合主成分分析法分析该省气象干旱的严重程度、影响范围、时空分布的多时间尺度特性。结果表明,黑龙江发生气象干旱的频率约为30%,省内气象干旱影响范围在1980年前呈扩大趋势之后逐渐缩小,2000-2014年干旱范围轻微增大后趋于稳定。气象干旱空间分布格局主要存在整体一致型和西北-东南对立分布两种态势。随着时间的变化,黑龙江在1980年后极端事件发生较多,2000年后旱化趋势显著。该结论可为研究区内的水资源分配及农业发展提供理论指导作用。 展开更多
关键词 气象干旱 标准降水指数 多时间尺度 时空分布 黑龙江省
下载PDF
Ecological compensation mechanism for Beijing-Tianjin-Hebei region based on footprint balance and footprint deficit
2
作者 XING Cheng-guo ZHAO Shu-qin +1 位作者 YAN Hai-ming yang hui-cai 《Ecological Economy》 2020年第3期218-229,共12页
Construction of the ecological compensation mechanism is an important approach to put the“Beijing-Tianjin-Hebei Coordinated Development Plan”into practice and improve the ecological environment of the Beijing-Tianji... Construction of the ecological compensation mechanism is an important approach to put the“Beijing-Tianjin-Hebei Coordinated Development Plan”into practice and improve the ecological environment of the Beijing-Tianjin-Hebei region.This paper constructs an ecological compensation mechanism for the Beijing-Tianjin-Hebei region based on the footprint balance and footprint deficit after clarifying ecological governance objectives.First,this paper proposes to establish a uniform,hierarchical and classified supply mechanism of ecosystem services according to the classification of land resources,water resources and forest resources for the Beijing-Tianjin-Hebei region.Then,the“Authority with Corresponding Responsibility”for the supply of ecosystem services in the Beijing-Tianjin-Hebei region can be realized through a footprint balance and footprint deficit indicator circulation mechanism.Finally,the scientific and rational ecological compensation standard can be guaranteed through establishing the integrated governance mechanism for ecological compensation in the Beijing-Tianjin-Hebei region and improving the“ecological compensation standard”.The results of this paper can provide sound theoretical support for effectively promoting the improvement of ecosystem services and human well-being in the Beijing-Tianjin-Hebei region. 展开更多
关键词 Beijing-Tianjin-Hebei region ecosystem services ecological compensation mechanism footprint balance footprint deficit
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部