干旱区生态环境知识资源中心(Arid): 珠江流域植被净初级生产力及其时空格局

Arid

	珠江流域植被净初级生产力及其时空格局
其他题名	Net Primary Productivity and Its Spatio-temporal Patterns in the Pearl River Basin
	王兆礼; 陈晓宏
ISSN	0529-6579
出版年	2006
卷号	45 期号:6 页码:106-110
中文摘要	为阐明珠江流域植被净初级生产力(NPP)变化的整体状况,应用以遥感观测数据驱动的GLO-PEM模式模拟估计的NPP数据,对珠江流域1981～2000年间的地表植被净初级生产力的空间分布及时间序列变化进行了综合分析.研究结果表明:①20年来,珠江流域年均NPP总量为0.60PgC,占中国总量的19.42%,单位面积的年平均NPP为1328.61g/(m~2·a),是中国平均水平的4.12倍;②从NPP的空间分布看,单位面积的NPP以右江上游山区及珠江三角洲西南部地区等地最高,北盘江上游山区最低;③从各种植被类型来看,以热带常绿阔叶林的平均NPP最大,山地稀树灌木草原的平均NPP最小;④受气候和土地利用变化的影响,20年来珠江流域植被NPP整体上呈现了不显著减少的趋势,单位面积NPP减少了约0.6%.
英文摘要	With increased study of global change, the function of vegetation has become more widely appreciated. As one of the characters of the vegetation, the net primary productivity (NPP) becomes an important approach to study the structure and function of the vegetation in terrestrial ecosystem. In this paper, NPP data sets modeled by the satellite data-driven Global Production Efficiency Model (GLO-PEM) are used to study NPP and its spatio-temporal patterns in the Pearl River Basin. To study the spatio-temporal patterns of NPP in the the Pearl River Basin, regression analysis and the Kendall test are applied. The results reveal that: ( 1) During the past 20 years, the total annual NPP of vegetation in the Pearl River Basin is 0. 60 Pg C, accounting for 19. 42% of the total country NPP. The average NPP is 1328. 61 g/ (m~2·a), as much as 4. 12 times the total countiy mean; (2) The difference of the spatial pattern of NPP arises from differences in habitat and the ability of vegetation to adapt to different environments. The highest average NPP per unit is 2536. 35 g/ (m~2·a) , in the mountain areas of Youjiang River, while the lowest average NPP is 709 g/ (m~2·a) in the mountain areas of Beipanjiang River; (3) Different vegetation has a different NPP due to differences in the utilization rates of various resources. Among all vegetation types, evergreen broad leaf forests, with a NPP of 1472. 26 g/ (m~2·a) , are the most productive, while the least productive one is alpine sparse vegetation, with a NPP of 1176. 18 g/ (m~2·a); (4) Global climate change arid land use change are the key factors that influence NPP in the Pearl River Basin. NPP in the Pearl River Basin has been decreasing at a rate of 0. 36 g/ (m~2·a) , corresponding to an annual decrease rate of 0. 03% of the annual mean NPP.
中文关键词	净初级生产力 ; 遥感模式 ; 时空变化 ; 珠江流域
英文关键词	GIS NPP GLO-PEM GIS spatio-temporal patterns the Pearl River Basin
语种	中文
国家	中国
收录类别	CSCD
WOS类目	FORESTRY
WOS研究方向	Forestry
CSCD记录号	CSCD:2632615
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/220557
作者单位	中山大学水资源与环境研究中心, 广州, 广东 510275, 中国
推荐引用方式 GB/T 7714	王兆礼,陈晓宏. 珠江流域植被净初级生产力及其时空格局[J],2006,45(6):106-110.
APA	王兆礼,&陈晓宏.(2006).珠江流域植被净初级生产力及其时空格局.,45(6),106-110.
MLA	王兆礼,et al."珠江流域植被净初级生产力及其时空格局".45.6(2006):106-110.

条目包含的文件
条目无相关文件。

个性服务

谷歌学术

百度学术

必应学术

相关权益政策

收藏/分享