干旱区生态环境知识资源中心(Arid): 西北干旱区植被净初级生产力年际变化及其时空和气候因子的贡献以河西走廊为例

Arid

	西北干旱区植被净初级生产力年际变化及其时空和气候因子的贡献以河西走廊为例
其他题名	Inter-annual variation of vegetation net primary productivity and the contribution of spatial- temporal and climate factors in arid Northwest China: A case study of Hexi Corridor
	李传华; 周敏; 王玉涛; 朱同斌; 孙皓; 殷欢欢; 曹红娟; 韩海燕
来源期刊	生态学杂志
ISSN	1000-4890
出版年	2020
卷号	39 期号:10 页码:3265-3275
中文摘要	干旱半干旱区主导着全球植被净初级生产力(net primary productivity,NPP)的年际变化(inter-annual variability,IAV),但该区域NPP-IAV及其驱动机制并不清楚。本文以河西走廊为研究区,使用CASA模型估算20022017年的NPP,基于距平通量公式计算了该地区NPP-IAV,并定量估算了时间、空间以及气候因子对NPP-IAV的贡献。结果表明: 20022017年河西走廊NPP呈上升趋势,植被生长状况良好; NPP-IAV呈现先负后正的变化规律;河西走廊NPP-IAV受暖干和冷湿气候影响,前者控制的面积最大(51.01%),但对NPP-IAV的贡献仅占15.38%;后者对NPP-IAV的贡献率最大(48.68%),但面积仅占23.67%;暖干气候主导着河西走廊NPP的分布格局,冷湿气候主导着NPP年际变化; 7月NPP对IAV贡献最大,3月最小;草地主导着河西走廊NPP-IAV;荒漠NPP总量最低,但贡献率却高于森林。据此预测,随着中国西北干旱区气候变暖,该地区植被NPP-IAV将进一步加剧。
英文摘要	Net primary productivity (NPP) in arid and semi-arid areas dominates the inter-annual variation (IAV) of global NPP. However,the NPP-IAV and its driving mechanisms in these areas remain unknown. Here,we estimated NPP in Hexi Corridor during 2002-2017 using the CASA model,calculated the change of NPP-IAV based on the formula of anomaly flux,and quantitatively estimated the contributions of spatial-temporal and climate factors to NPP-IAV. The results showed that NPP in Hexi Corridor increased from 2002 to 2017,and vegetation was growing well. During the study period,NPP-IAV showed a variation pattern from negative to positive. The NPP-IAV of Hexi Corridor was affected by warm-dry and cold-wet climate. The former climate condition controlled the largest area (51.01%) and contributed only 15.38% to NPP-IAV. In contrast,the cold-wet condition contributed the most to NPP-IAV (48.68%),though only accounted for 23.67% of the area. The warm-dry climate dominated the distribution pattern of NPP in the Hexi Corridor,with the cold-wet climate dominating the NPP-IAV. NPP in July contributed the most and that in March contributed the least to IAV. Grasslands dominated the NPP-IAV in the Hexi Corridor. The total NPP in desert was the lowest,but its contribution to NPP-IAV was more than that of forests. Therefore,it is predicted that the vegetation NPP-IAV will be further intensified with climate warming in the arid region of northwest China in the future.
中文关键词	净初级生产力 ; 年际变化 ; 时空贡献 ; 气候驱动 ; 河西走廊
英文关键词	net primary productivity inter-annual variation spatial-temporal contribution climate driving Hexi Corridor
类型	Article
语种	中文
收录类别	CSCD
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:6820375
来源机构	西北师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/336991
作者单位	李传华, 西北师范大学地理与环境科学学院, 兰州, 甘肃 730070, 中国.; 周敏, 西北师范大学地理与环境科学学院, 兰州, 甘肃 730070, 中国.; 王玉涛, 西北师范大学地理与环境科学学院, 兰州, 甘肃 730070, 中国.; 朱同斌, 西北师范大学地理与环境科学学院, 兰州, 甘肃 730070, 中国.; 孙皓, 西北师范大学地理与环境科学学院, 兰州, 甘肃 730070, 中国.; 殷欢欢, 西北师范大学地理与环境科学学院, 兰州, 甘肃 730070, 中国.; 曹红娟, 西北师范大学地理与环境科学学院, 兰州, 甘肃 730070, 中国.; 韩海燕, 西北师范大学地理与环境科学学院, 兰州, 甘肃 730070, 中国.
推荐引用方式 GB/T 7714	李传华,周敏,王玉涛,等. 西北干旱区植被净初级生产力年际变化及其时空和气候因子的贡献以河西走廊为例[J]. 西北师范大学,2020,39(10):3265-3275.
APA	李传华.,周敏.,王玉涛.,朱同斌.,孙皓.,...&韩海燕.(2020).西北干旱区植被净初级生产力年际变化及其时空和气候因子的贡献以河西走廊为例.生态学杂志,39(10),3265-3275.
MLA	李传华,et al."西北干旱区植被净初级生产力年际变化及其时空和气候因子的贡献以河西走廊为例".生态学杂志 39.10(2020):3265-3275.