干旱区生态环境知识资源中心(Arid): 三江源区草地植被返青及其与气候因子的关系

Arid

	三江源区草地植被返青及其与气候因子的关系
其他题名	Relationships between grassland vegetation turngreen and climate factors in the Three-river Resource region
	韩炳宏 1; 周秉荣 2; 赵恒和 1; 石明明 2; 孙瑛 1; 牛得草 3; 傅华 3
来源期刊	生态学报
ISSN	1000-0933
出版年	2019
卷号	39 期号:15 页码:5635-5641
中文摘要	为厘清三江源地区草地植被返青及其与气候因子的关系。以三江源地区为研究对象,选取该区2003-2012年日照时数、平均气温和降水以及草地植被返青资料,采用线性倾向率和Pearson相关分析法,较为系统地分析探讨了近10年三江源地区气候变化趋势及其与草地植被返青的相关关系。结果表明:(1)近10年来,三江源地区草地植被返青呈提前一推迟一再提前一再推迟的变化趋势。(2)海拔4000 m以上的地区草地植被返青期极差较大,相差约40 d;且高寒草原和高寒荒漠草地植被返青时间突变最为显著。(3)三江源地区草地植被返青日期与返青期前30 d光、温、水的相关性较好。除局部地区草地植被返青与光、温、水呈显著负相关外,其余地区均显著正相关。以上研究结果表明,三江源地区草地植被返青期不是由单一因素决定,而是光照、气温和降水等因素综合作用的结果。
英文摘要	The aim of this study was to specify the grassland vegetation turngreen date and its relationships with climate factors over the Three-river Resource region,which was used as the research area in this study.The sunshine hours,average temperature and precipitation,grassland vegetation turngreen information data from 2003 to 2012,linear trend rate,and Pearson’s correlation analysis were used to systematically analyze and explore the climate change trend and its correlation relationships with grassland vegetation turngreen date over the Three-river Resource region.The results showed that the trend for grassland vegetation turngreen date was ahead-postpone-ahead-postpone across the region over the past 10 years.The maximum difference for vegetation turngreen date at over 4000 m above sea level and the climate factors was about 40 days.Furthermore,the most significant change trends were for grassland vegetation in alpine steppe and alpine desert areas.There was generally a good correlation between grassland vegetation turngreen date and sunshine,temperature,and precipitation 30 days before the turngreen date.However,there was a significant negative correlation between grassland vegetation turngreen date and sunshine,temperature,and precipitation in some parts of the Three-river Resource region,but there was a significant positive correlation across the rest of the region.The results showed that the grassland vegetation turngreen date was not determined by a single factor in the Three-river Resource region but was affected by a combination of sunshine,temperature,and precipitation.
中文关键词	三江源区 ; 草地植被 ; 返青期 ; 气候因子
英文关键词	Three-river Resource region grassland vegetation Turngreen date climate factors
语种	中文
国家	中国
收录类别	CSCD
WOS类目	BIOLOGY
WOS研究方向	Life Sciences & Biomedicine - Other Topics
CSCD记录号	CSCD:6557187
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/239467
作者单位	1.青海省海南州气象局;;青海省防灾减灾重点实验室, ;;青海省防灾减灾重点实验室, 共和;;西宁, ;; 813099;;810001; 2.青海省海南州气象局;;青海省气象科学研究所, ;;, 共和;;西宁, ;; 813099;;810001; 3.兰州大学, 草地农业生态系统国家重点实验室, 兰州, 甘肃 730020, 中国
推荐引用方式 GB/T 7714	韩炳宏,周秉荣,赵恒和,等. 三江源区草地植被返青及其与气候因子的关系[J]. 兰州大学,2019,39(15):5635-5641.
APA	韩炳宏.,周秉荣.,赵恒和.,石明明.,孙瑛.,...&傅华.(2019).三江源区草地植被返青及其与气候因子的关系.生态学报,39(15),5635-5641.
MLA	韩炳宏,et al."三江源区草地植被返青及其与气候因子的关系".生态学报 39.15(2019):5635-5641.