干旱区生态环境知识资源中心(Arid): 新疆草地净初级生产力(NPP)空间分布格局及其对气候变化的响应

Arid

	新疆草地净初级生产力(NPP)空间分布格局及其对气候变化的响应
其他题名	Spatial distribution pattern of NPP of Xinjiang grassland and its response to climatic changes
	张仁平; 郭靖; 张云玲
来源期刊	生态学报
ISSN	1000-0933
出版年	2020
卷号	40 期号:15 页码:5318-5326
中文摘要	分析植被物候与净初级生产力对气候变化的响应一直是研究全球变化的核心内容之一。新疆草地生态系统极为脆弱,对气候和环境变化的影响十分敏感,在新疆地区开展草地物候和净初级生产力及其对气候变化的响应有着独特的意义。基于遥感数据和野外台站实测数据,利用CASA模型模拟了新疆草地植被净初级生产力(NPP),阐述了2001-2014年新疆地区草地的NPP的空间格局及与气象因子的关系。(1)通过实测生物量精度检验表明,CASA模型基本可以反映新疆地区草地植被NPP。(2)2001-2014年新疆草地NPP平均值为102.49 gC m~(-2) a~(-1)。不同草地类型的NPPA存在明显差异。其中,山地草甸平均NPP最高,达到252.37 gC m~(-2) a~(-1);温性草甸草原次之,为204.93 gC m~(-2) a~(-1)。高寒荒漠和温性荒漠的平均NPP最低,分别为43.94 gC m~(-2) a~(-1), 53.11 gC m~(-2) a~(-1)。(3)新疆NPP的空间分布格局具有如下特点:山区NPP高于盆地NPP,北疆NPP高于南疆NPP;(4)降水能够促进新疆草地NPP增加,其中,夏季和秋季的降水对草地NPP的影响最为明显,温度对新疆地区草地NPP影响不大。降雨可以促进新疆草原NPP的增加。特别是在降水量较少但温度较高的草原,如温带荒漠草原、温带草原沙漠、温带沙漠、低地草甸等,年降水量和夏秋降水量对草地NPP有显著影响。温度对新疆草地NPP的影响不大。通过对新疆草地空间格局的分析,研究了草地NPP对气候变化的响应,为合理规划新疆草地的生产和利用,以及草地生态系统的健康发展和应对气候变化提供决策依据。
英文摘要	Analysis of vegetative net primary productivity(NPP)in response to climate change has been one of the core issues of global change studies.The grassland ecosystem in Xinjiang is extremely fragile and sensitive to climate and environmental changes.Hence,it is particularly important to investigate grassland net primary productivity and its response to climate change in Xinjiang.This study simulates the NPP of Xinjiang grassland vegetation with the CASA model based on remote sensing data and measured data from field stations and describes the relationship between spatial patterns of the NPP on the Xinjiang grassland and meteorological factors from 2001 to 2014.(1)Through accuracy verification with the measured biomass data,it was shown that the CASA model can basically reflect the NPP of Xinjiang grassland vegetation.(2)The average value of the NPP of the Xinjiang grassland from 2001 to 2014 was 102.49 gC m~(-2) a~(-1) .There are significant differences in NPP among different grassland types.The NPP of mountain meadows is the highest,reaching 252.57 gC m~(-2) a~(-1),followed by that of the temperate meadow grasslands,with 204.93 gC m~(-2)a~(-1) .The NPP of alpine desert and temperate grassland desert is the lowest,at 43.94 gC m~(-2)a~(-1) and 53.11 gC m~(-2)a~(-1),respectively.(3)The spatial distribution pattern of the NPP of Xinjiang grassland vegetation has the following characteristics:the NPP of the mountain grassland is higher than that of the basin grassland,and the NPP of the grassland in northern Xinjiang is higher than that of the grassland in southern Xinjiang.(4)Rainfall can promote an increase in the NPP of Xinjiang grasslands.In particular,in grasslands with less precipitation but higher temperatures,such as temperate desert grasslands,temperate grassland deserts,temperate deserts,and lowland meadows,annual precipitation and summer and autumn precipitation have a significant impact on grassland NPP.However,the temperature has little influence on the NPP of the Xinjiang grassland.By analyzing the spatial patterns of the grassland in Xinjiang,the response of grassland NPP to climate change was studied in order to provide a decision-making basis for the rational planning of grassland production and utilization,the healthy development of grassland ecosystems and the response to climate change.
中文关键词	草地 ; 新疆 ; CASA模型
英文关键词	NPP grassland NPP Xinjiang CASA model
类型	Article
语种	中文
收录类别	CSCD
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:6787672
来源机构	新疆大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/336822
作者单位	张仁平, 新疆大学资源与环境科学学院;;新疆大学, ;;绿洲生态教育部重点实验室, 乌鲁木齐;;乌鲁木齐, ;; 830046;;830046.; 郭靖, 新疆林业科学院, 乌鲁木齐, 新疆 830000, 中国.; 张云玲, 新疆维吾尔自治区草原总站, 乌鲁木齐, 新疆 830049, 中国.
推荐引用方式 GB/T 7714	张仁平,郭靖,张云玲. 新疆草地净初级生产力(NPP)空间分布格局及其对气候变化的响应[J]. 新疆大学,2020,40(15):5318-5326.
APA	张仁平,郭靖,&张云玲.(2020).新疆草地净初级生产力(NPP)空间分布格局及其对气候变化的响应.生态学报,40(15),5318-5326.
MLA	张仁平,et al."新疆草地净初级生产力(NPP)空间分布格局及其对气候变化的响应".生态学报 40.15(2020):5318-5326.