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Trend Analysis of Relationship between Primary Productivity, Precipitation and Temperature in Inner Mongolia | |
Chen, Tianyang; Xie, Yichun; Liu, Chao1; Bai, Yongfei2; Zhang, Anbing3; Mao, Lishen4; Fan, Siyu | |
2018 | |
发表期刊 | ISPRS INTERNATIONAL JOURNAL OF GEO-INFORMATION |
卷号 | 7期号:6 |
摘要 | This study mainly examined the relationships among primary productivity, precipitation and temperature by identifying trends of change embedded in time-series data. The paper also explores spatial variations of the relationship over four types of vegetation and across two precipitation zones in Inner Mongolia, China. Traditional analysis of vegetation response to climate change uses minimum, maximum, average or cumulative measurements; focuses on a whole region instead of fine-scale regional or ecological variations; or adopts generic analysis techniques. We innovatively integrate Empirical Mode Decomposition (EMD) and Redundancy Analysis (RDA) to overcome the weakness of traditional approaches. The EMD filtered trend surfaces reveal clear patterns of Enhanced Vegetation Index (EVI), precipitation, and temperature changes in both time and space. The filtered data decrease noises and cyclic fluctuations in the original data and are more suitable for examining linear relationship than the original data. RDA is further applied to reveal partial effect of precipitation and temperature, and their joint effect on primary productivity. The main findings are as follows: (1) We need to examine relationships between the trends of change of the variables of interest when investigating long-term relationships among them. (2) Long-term trend of change of precipitation or temperature can become a critical factor influencing primary productivity depending on local environments. (3) Synchronization (joint effect) of precipitation and temperature in growing season is critically important to primary productivity in the study area. (4) Partial and joint effects of precipitation and temperature on primary productivity vary over different precipitation zones and different types of vegetation. The method developed in this paper is applicable to ecosystem research in other regions. |
关键词 | Inner Mongolia vegetation growth climate change partial effect EMD filtering redundancy analysis |
学科领域 | Computer Science, Information Systems ; Geography, Physical ; Remote Sensing |
DOI | 10.3390/ijgi7060214 |
收录类别 | SCI |
语种 | 英语 |
WOS关键词 | EMPIRICAL MODE DECOMPOSITION ; CLIMATE-CHANGE ; VEGETATION DYNAMICS ; GRASSLAND DEGRADATION ; LAND DEGRADATION ; NDVI ; RESPONSES ; IMPACTS ; ECOSYSTEMS ; STRATEGIES |
WOS记录号 | WOS:000436275700016 |
出版者 | MDPI |
文献子类 | Article |
出版地 | BASEL |
EISSN | 2220-9964 |
资助机构 | Guangdong Innovative and Entrepreneurial Research Team Program [2016ZT06D336] ; GDAS' Special Project of Science and Technology Development [2017GDASCX-0101] |
作者邮箱 | tchen7@emich.edu ; yxie@emich.edu ; chaoliu0202@gmail.com ; yfbai@ibcas.ac.cn ; zhanganbing@hebeu.edu.cn ; lmao@uga.edu ; sfan@emich.edu |
作品OA属性 | Green Submitted, gold |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ibcas.ac.cn/handle/2S10CLM1/20326 |
专题 | 植被与环境变化国家重点实验室 |
作者单位 | 1.Eastern Michigan Univ, Inst Geospatial Res & Educ, Ypsilanti, MI 48197 USA 2.Anhui Univ Sci & Technol, Sch Geomat, 168 Taifeng Ave, Huainan, Peoples R China 3.Chinese Acad Sci, Inst Bot, Beijing 100093, Peoples R China 4.Hebei Univ Engn, Sch Min & Geomat, 199 South Guangming St, Handan, Peoples R China 5.Univ Georgia, Dept Geog, 210 Field St 204, Athens, GA 30602 USA |
推荐引用方式 GB/T 7714 | Chen, Tianyang,Xie, Yichun,Liu, Chao,et al. Trend Analysis of Relationship between Primary Productivity, Precipitation and Temperature in Inner Mongolia[J]. ISPRS INTERNATIONAL JOURNAL OF GEO-INFORMATION,2018,7(6). |
APA | Chen, Tianyang.,Xie, Yichun.,Liu, Chao.,Bai, Yongfei.,Zhang, Anbing.,...&Fan, Siyu.(2018).Trend Analysis of Relationship between Primary Productivity, Precipitation and Temperature in Inner Mongolia.ISPRS INTERNATIONAL JOURNAL OF GEO-INFORMATION,7(6). |
MLA | Chen, Tianyang,et al."Trend Analysis of Relationship between Primary Productivity, Precipitation and Temperature in Inner Mongolia".ISPRS INTERNATIONAL JOURNAL OF GEO-INFORMATION 7.6(2018). |
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