Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.agrformet.2015.01.015 |
Analysis of spatial and temporal patterns of net primary production and their climate controls in China from 1982 to 2010 | |
Liang, Wei1,2; Yang, Yuting3,4; Fan, Dongmei2; Guan, Huade3; Zhang, Tian2; Long, Di5; Zhou, Yi2; Bai, Dan1 | |
通讯作者 | Bai, Dan |
来源期刊 | AGRICULTURAL AND FOREST METEOROLOGY
![]() |
ISSN | 0168-1923 |
EISSN | 1873-2240 |
出版年 | 2015 |
卷号 | 204页码:22-36 |
英文摘要 | Ecosystem net primary production (NPP) represents vegetation biomass increment after accounting for autotrophic respiration and is recognized as an important component of the terrestrial carbon cycle. In this study, the spatial and temporal patterns of NPP and their climate controls in China’s ecosystems for the period of 1982-2010 were analyzed by using a remote sensing-based carbon model (i.e., the Carnegie-Ames-Stanford Approach, CASA) and multiple statistical methods. Validation against NPP observations from 335 forests sites showed good performance of CASA over the study region, with an overall coefficient of determination (R-2) of 0.73 and root mean square error (RMSE) of 132.9 g Cm-2 yr(-1). Spatially, we found that the spatial pattern of China’s NPP showed gradients decreasing from the southeast toward northwest, which could be mainly explained by the spatial variability in annual precipitation. Temporally, China’s NPP showed a significant increasing trend at both the national and biome levels during 1982-2010, with an annual increase of 0.011 Pg C or 0.42%. However, the increasing trends in NPP were not continuous throughout the 29-year period at the national scale. On the other hand, it showed three periods where the trends changed, which was likely being caused by a shift in climate conditions and extensive drought. Air temperature was found to be the dominant climatic factor that controlled the interannual variability in NPP throughout the country except for arid and semi-arid regions in the middle-north and northwest parts of China, where the interannual variations in NPP were mainly explained by changes in precipitation. Similar results were also obtained at the seasonal scale that changes in NPP were generally controlled by that in air temperature except for summertime, in which higher NPP were favored by higher summer precipitation, whereas summer temperature was negatively correlated with NPP. At the monthly scale, NPP responded to change in temperature more rapidly than that in precipitation. However, temperature appeared to control NPP only in humid and semi-humid regions. For monthly NPP-precipitation relationship, the strongest positive relations were observed when NPP lagged behind precipitation by 1-3 months. However, deviating from the common hypothesis that plant in drier areas should respond to water availability more rapidly than in other regions, our analysis revealed a relative large time lag between monthly NPP and precipitation in arid ecosystems (i.e., 3 months). This result suggests that there may be a more complex mechanism of local water redistribution that controls vegetation water use (e.g., use of water from previous year precipitation) in extremely arid ecosystems. (C) 2015 Elsevier B.V. All rights reserved. |
英文关键词 | Net primary production China Spatiotemporal patterns Climate control Remote sensing CASA |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China ; Australia |
收录类别 | SCI-E |
WOS记录号 | WOS:000352246800003 |
WOS关键词 | TERRESTRIAL ECOSYSTEMS ; INTERANNUAL VARIATION ; MODEL-DRIVEN ; DATA SETS ; SATELLITE ; WATER ; MODIS ; NDVI ; VARIABILITY ; SIMULATION |
WOS类目 | Agronomy ; Forestry ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Agriculture ; Forestry ; Meteorology & Atmospheric Sciences |
来源机构 | 清华大学 ; Commonwealth Scientific and Industrial Research Organisation |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/185569 |
作者单位 | 1.Xian Univ Technol, State Key Lab Base Ecohydraul Arid Area, Xian 710062, Peoples R China; 2.Shaanxi Normal Univ, Coll Tourism & Environm Sci, Xian 710062, Peoples R China; 3.Flinders Univ South Australia, Sch Environm, Adelaide, SA, Australia; 4.CSIRO Land & Water, Canberra, ACT, Australia; 5.Tsinghua Univ, Dept Hydraul Engn, State Key Lab Hydrosci & Engn, Beijing 100084, Peoples R China |
推荐引用方式 GB/T 7714 | Liang, Wei,Yang, Yuting,Fan, Dongmei,et al. Analysis of spatial and temporal patterns of net primary production and their climate controls in China from 1982 to 2010[J]. 清华大学, Commonwealth Scientific and Industrial Research Organisation,2015,204:22-36. |
APA | Liang, Wei.,Yang, Yuting.,Fan, Dongmei.,Guan, Huade.,Zhang, Tian.,...&Bai, Dan.(2015).Analysis of spatial and temporal patterns of net primary production and their climate controls in China from 1982 to 2010.AGRICULTURAL AND FOREST METEOROLOGY,204,22-36. |
MLA | Liang, Wei,et al."Analysis of spatial and temporal patterns of net primary production and their climate controls in China from 1982 to 2010".AGRICULTURAL AND FOREST METEOROLOGY 204(2015):22-36. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。