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	基于 CASA 模型研究祁连山地区植被净初级生产力的时空变化
其他题名	Spatial-temporal Variations of Net Primary Productivity of Qilian Mountains Vegetation Based on CASA Model
	张禹舜 1; 贾文雄 1; 赵一飞 2; 刘亚荣 1; 赵珍 1; 陈京华 1
来源期刊	西北植物学报
ISSN	1000-4025
出版年	2014
卷号	34 期号:10 页码:2085-2091
中文摘要	基于2003~2012年的遥感数据及DEM 高程模型校准后的气候数据,利用CASA模型估算了祁连山地区植被净初级生产力(NPP),并对NPP的年内、年际变化以及时空分布规律和变化趋势进行分析。结果表明:(1)祁连山地区年内NPP集中在6~8月,占全年 NPP总量的86.39%;2003~2007年,NPP年均值在165.28~192.75 g· m~(-2)·a~(-1)之间小幅波动;2007~2009年呈现出较明显的下降趋势,由168.63 g· m~(-2)·a~(-1)下降到153.17 g·m~(-2)·a~(-1);2009~2012年表现出明显的上升趋势,最大值达207.13 g· m~(-2)·a~(-1)。(2)祁连山地区的 NPP东西部分布差异大,东部地区大多在200~400 g· m~(-2)·a~(-1)之间,部分地区可达500 g· m~(-2)·a~(-1)之上;中部地区存在较明显的南北差异,南部大多地区在100~300 g· m~(-2)·a~(-1)之间,北部大多地区在100~400 g· m~(-2)·a~(-1)之间;西部广大地区大多在0~100 g· m~(-2)·a~(-1)之间,荒漠和高山冰雪覆盖区域生物量最低。(3)近十年来,祁连山地区的NPP呈波动增加趋势,增加面积约9 867 km~2,约占植被总面积的21.19%,减少面积约8 173 km~2,约占植被总面积的17.52%,表明祁连山的生态健康水平总体在改善但局部在恶化。
英文摘要	By using the remote sensing data and the climate data of DEM elevation model calibrated in 2003-2012,we estimated the net primary productivity(NPP)of Qilian Mountains vegetation based on CASA model.The years,annual variation of NPP,the temporal-spatial distribution and change trend were also analyzed.The results reveal that:(1)The NPP in Qilian Mountains is mainly concentrated during the summer (June to August),it accounts for 86.39% of the total NPP;From 2003 to 2007,Minor fluctuations between 165.28 g· m~(-2)·a~(-1)and 192.75 g· m~(-2)·a~(-1) in the annual average of NPP;NPP showed a significant downward trend from 2007 to 2009,by 168.63 g· m~(-2)·a~(-1) down to 153.17 g· m~(-2)·a~(-1);while,NPP showed a clear upward trend from 2009 to 2012,the maximum value can reach 207.13 g· m~(-2)·a~(-1).(2)The spatial distribution of NPP in Qilian Mountains showed a rising tendency from west to east.NPP in most of the eastern regions varied from 200 to 400 g· m~(-2)·a~(-1),in some areas up to 500 g· m~(-2)·a~(-1).There were obviously differences between the north and the south in the central region;NPP in most of the southern regions varied from 100 to 300 g·m~(-2)·a~(-1),but it varied from 100 to 400 g· m~(-2)·a~(-1)in most northern regions.NPP in most of the western regions was between 0 and 100 g· m~(-2)·a~(-1),especially the desert and alpine ice snow covered area had the lowest biomass.(3)NPP in the Qilian Mountains has been increased volatility in the recent ten years;the area of NPP increased about 9 867 km~2 and it accounts for about 21.19% of the total area;the reduced account for 17.52% of the total area about 8 173 km~2.The results showed that the ecological health of Qilian Mountains is improving in the overall,although it deteriorated in the local.
中文关键词	净初级生产力 ; CASA模型 ; 时空变化 ; 祁连山地区
英文关键词	NPP CASA model spatial-temporal variations Qilian Mountains region
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:5275644
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/2XILL650/231917
作者单位	1.西北师范大学地理与环境科学学院, 兰州, 甘肃 730070, 中国; 2.南京大学地理与海洋科学学院, 南京, 江苏 210093, 中国
推荐引用方式 GB/T 7714	张禹舜,贾文雄,赵一飞,等. 基于 CASA 模型研究祁连山地区植被净初级生产力的时空变化[J]. 西北师范大学,2014,34(10):2085-2091.
APA	张禹舜,贾文雄,赵一飞,刘亚荣,赵珍,&陈京华.(2014).基于 CASA 模型研究祁连山地区植被净初级生产力的时空变化.西北植物学报,34(10),2085-2091.
MLA	张禹舜,et al."基于 CASA 模型研究祁连山地区植被净初级生产力的时空变化".西北植物学报 34.10(2014):2085-2091.