干旱区生态环境知识资源中心(Arid): 黄河中游径流可再生性对于人类活动和气候变化的响应

Arid

	黄河中游径流可再生性对于人类活动和气候变化的响应
其他题名	Runoff Renewability in the Middle Yellow River in Response to Human Activity and Climate Change
	许炯心
来源期刊	自然资源学报
ISSN	1000-3037
出版年	2015
卷号	30 期号:3 页码:423-432
中文摘要	径流可再生性的变化是水循环研究中的重要科学问题,对于干旱、半干旱气候区水资源的可持续利用有重要意义。以黄河中游河口镇至龙门区间1950-2008年间的水文、气象资料以及人类活动(如引水、水土保持)等资料为基础,运用统计方法研究了径流可再生性指标I_(rr)的变化及其成因。在59 a的时间尺度上,I_(rr)在总体上具有明显的减小趋势,但具有次一级的波动,其变化可以分为4个阶段。研究发现,3个气候变量(年降水量P_m、年均气温T_m和夏季风强度指标SMI)与当年I_(rr)的相关程度均不高,但它们的滞后作用对于I_(rr)的影响十分明显,表明气候因子对于径流可再生性影响具有某种时间尺度效应。以I_(rr)与某一气候因子的N年滑动平均值的相关系数与N的关系曲线的峰值或拐点所对应的N值作为气候因子影响I_(rr)的特征时间尺度,确定了P_m、SMI和T_m影响径流可再生性的特征时间尺度分别为11、9和4 a。I_(rr)与各项水土保持措施的面积及水土保持措施总面积之间均表现出显著的负相关。1998年以后开展的以大规模退耕还林(草)为中心的生态环境建设使得径流可再生性指标进一步降低。建立了I_(rr)与气候暖干化指标和水土保持总面积之间的回归方程式,该方程表明,I_(rr)随气候暖干化程度的增加而减小,随水土保持措施面积的增大而减小。
英文摘要	Runoff renewability is an important topic in the study of water cycle, and the knowledge of it is important for sustainable utilization of water resources in arid and semi-arid climate areas. Based on hydrological and meteorological data and the information related with human activity including soil and water conservation and water diversion, and using statistical method, we have studied the temporal variation in runoff renewability (I_(rr)) and its formative cause in the middle Yellow River basin. We found that at the time scale of 59 year, I_(rr) shows a decreasing trend superposed by some secondary fluctuations, which divides the variation into four stages. Although the correlations of I_(rr) with three climate variables in the same year such as annual precipitation (P_m), air temperature (T_m) and summer monsoon intensity (SMI) are relatively low, we found significant time-lag effect of the variation in P_m, T_m and SMI on I_(rr), based on which the characteristic length of time-scale (Lt) can be determined. The correlation coefficients of I_(rr) with N-year moving averages of a climate variable were calculated and then plotted with N. The N associating with the turning point is determined as Lt. We found that the Lt for the influence of P_m, T_m and SMI on I_(rr) are 11, 9 and 4 years respectively. There is close negative correlation between I_(rr) and the area of each type of soil and water conservation measures, and the total area. The large-scale implementation of ecological restoration centering on"conversion of degraded farm land into forest and grass land "since 1998 has resulted in a further reduction in I_(rr). A regression equation between I_(rr) and the index (Iwd,5m) of warming and dryness and the total area (A_(sw)) of soil and water conservation measures was established which indicates that I_(rr) decreases with Iwd and A_(sw).
中文关键词	流域水循环 ; 径流可再生性 ; 气候变化 ; 水土保持 ; 黄河流域
英文关键词	drainage basin water cycle runoff renewability climate change soil and water conservation middle Yellow River
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOSCIENCES MULTIDISCIPLINARY
WOS研究方向	Geology
CSCD记录号	CSCD:5383618
来源机构	中国科学院地理科学与资源研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/233874
作者单位	中国科学院地理科学与资源研究所, 中国科学院陆地水循环及地表过程重点实验室, 北京 100101, 中国
推荐引用方式 GB/T 7714	许炯心. 黄河中游径流可再生性对于人类活动和气候变化的响应[J]. 中国科学院地理科学与资源研究所,2015,30(3):423-432.
APA	许炯心.(2015).黄河中游径流可再生性对于人类活动和气候变化的响应.自然资源学报,30(3),423-432.
MLA	许炯心."黄河中游径流可再生性对于人类活动和气候变化的响应".自然资源学报 30.3(2015):423-432.

条目包含的文件
条目无相关文件。

个性服务

谷歌学术

百度学术

必应学术

相关权益政策

收藏/分享