干旱区生态环境知识资源中心(Arid): 西北地区自然植被净第一性生产力的空间分布

Arid

	西北地区自然植被净第一性生产力的空间分布
其他题名	Spatial distribution of net primary productivity of natural vegetation in the northwest China
	赵传燕 1; 程国栋 2; 邹松兵 2; 张永忠 2; 韩惠 3
ISSN	0455-2059
出版年	2009
卷号	45 期号:1 页码:42-49,55
中文摘要	植物净第一性生产力与全球碳平衡和碳扰动、全球土地利用变化、全球气候变化和粮食安全等有密切关系,成为表征陆地生态过程的关键参数.以西北地区211个气象站降水和≥0℃积温的30年观测数据为基础,以GIS为技术支撑,利用统计方程实现两大环境变量的空间化.联系植物生理生态学特点及水热平衡关系的综合模型对自然植被的净第一性生产力现状进行估算,结果表明西北地区NPP分布在0.51～8.00 t/(hm~2·a).其中:森林草原或草原NPP分布在4.68-8.00 t/(hm~2·a);干草原NPP分布在2.18～4.68 t/(hm~2·a);半荒漠、荒漠、沙漠或戈壁NPP分布在0.51～2.18 t/(hm~2·a).
英文摘要	Net primary productivity is an important parameter, which is closely connected with global climate changes, global land use/cover, global carbon balance and cycle and safe food production. The distribution of NPP of natural vegetation in the northwest China was estimated with an integrated model based on ecophysiological features and the regional evapotranspiration model related to the water balance equation and heat balance equation. ≥0℃ annual average temperature and annual average precipitation are two main factors affecting NPP. The two factors were spatialized based on measured data in 211 stations in the study area. Generally, precipitation decreases from the southeast to the northwest. ≥0℃ annual average temperature showed the same trend as precipitation. It was markedly influenced by the landform. Some conclusions might be drawn from the study as follows: Spatially, NPP ranges from 0.51 to 8.00 t/(hm~2·a) in the northwest China, and within the extent, NPP of forest and steppe varies from 4.68 to 8.00 t/(hm~2·a), NPP of grassland is from 2.18 to 4.68 t/(hm~2·a) and NPP in desert and gobi from 0.51 to 2.18 t/(hm~2·a).
中文关键词	西北地区 ; 植被净第一性生产力 ; 全球变化 ; 模型 ; 地理信息系统
英文关键词	northwest China net primary productivity global climate changes model geographical information system
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:3561628
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/2XILL650/223888
作者单位	1.兰州大学, 干旱与草地农业生态教育部重点实验室, 兰州, 甘肃 730000, 中国; 2.中国科学院寒区旱区环境与工程研究所冻土实验室, 兰州, 甘肃 730000, 中国; 3.兰州交通大学,数理与软件工程学院, 兰州, 甘肃 730070, 中国
推荐引用方式 GB/T 7714	赵传燕,程国栋,邹松兵,等. 西北地区自然植被净第一性生产力的空间分布[J]. 兰州大学,2009,45(1):42-49,55.
APA	赵传燕,程国栋,邹松兵,张永忠,&韩惠.(2009).西北地区自然植被净第一性生产力的空间分布.,45(1),42-49,55.
MLA	赵传燕,et al."西北地区自然植被净第一性生产力的空间分布".45.1(2009):42-49,55.