Alpine grassland fPAR change over the Northern Tibetan Plateau from 2002 to 2011
In this study, two different methods including Digital Camera and Reference Panel (DCRP) and traditional in situ fPAR observation for measuring the in situ point fPAR of very short alpine grass vegetation were compared, and the Moderate Resolution Imaging Spectroradiometer (MODIS) fPAR products were...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2017-06-01
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| Series: | Advances in Climate Change Research |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1674927816300740 |
| _version_ | 1830351795172409344 |
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| author | Bao-Xiong Chen Xian-Zhou Zhang Yu-Fang Sun Jing-Sheng Wang Yong-Tao He |
| author_facet | Bao-Xiong Chen Xian-Zhou Zhang Yu-Fang Sun Jing-Sheng Wang Yong-Tao He |
| author_sort | Bao-Xiong Chen |
| collection | DOAJ |
| description | In this study, two different methods including Digital Camera and Reference Panel (DCRP) and traditional in situ fPAR observation for measuring the in situ point fPAR of very short alpine grass vegetation were compared, and the Moderate Resolution Imaging Spectroradiometer (MODIS) fPAR products were evaluated and validated by in situ point data on the alpine grassland over the Northern Tibetan Plateau, which is sensitive to climate change and vulnerable to anthropogenic activities. Results showed that the MODIS alpine grassland fPAR product, examined by using DCRP, and traditional in situ fPAR observation had a significant relationship at the spatial and temporal scales. The decadal MODIS fPAR trend analysis showed that, average growing season fPAR increased by 1.2 × 10−4 per year and in total increased 0.86% from 2002 to 2011 in alpine grassland, when most of the fPAR increments occurred in southeast and center of the Northern Tibetan Plateau, the alpine grassland tended to recover from degradation slightly. However, climatic factors have influenced the various alpine grassland vegetation fPAR over a period of 10 years; precipitation significantly affected the alpine meadow fPAR in the eastern region, whereas temperature considerably influenced the alpine desert steppe fPAR in the west region. These findings suggest that the regional heterogeneity in alpine grassland fPAR results from various environmental factors, except for vegetation characteristics, such as canopy structure and leaf area. |
| first_indexed | 2024-12-20T00:44:16Z |
| format | Article |
| id | doaj.art-7812667c9e704d498748b450808b096e |
| institution | Directory Open Access Journal |
| issn | 1674-9278 |
| language | English |
| last_indexed | 2024-12-20T00:44:16Z |
| publishDate | 2017-06-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Advances in Climate Change Research |
| spelling | doaj.art-7812667c9e704d498748b450808b096e2022-12-21T19:59:27ZengKeAi Communications Co., Ltd.Advances in Climate Change Research1674-92782017-06-018210811610.1016/j.accre.2017.05.008Alpine grassland fPAR change over the Northern Tibetan Plateau from 2002 to 2011Bao-Xiong Chen0Xian-Zhou Zhang1Yu-Fang Sun2Jing-Sheng Wang3Yong-Tao He4Rural Energy & Environment Agency, Ministry of Agriculture of the People's Republic of China, Beijing 100125, ChinaLhasa Plateau Ecosystem Research Station, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Science, Beijing 100101, ChinaRural Energy & Environment Agency, Ministry of Agriculture of the People's Republic of China, Beijing 100125, ChinaLhasa Plateau Ecosystem Research Station, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Science, Beijing 100101, ChinaLhasa Plateau Ecosystem Research Station, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Science, Beijing 100101, ChinaIn this study, two different methods including Digital Camera and Reference Panel (DCRP) and traditional in situ fPAR observation for measuring the in situ point fPAR of very short alpine grass vegetation were compared, and the Moderate Resolution Imaging Spectroradiometer (MODIS) fPAR products were evaluated and validated by in situ point data on the alpine grassland over the Northern Tibetan Plateau, which is sensitive to climate change and vulnerable to anthropogenic activities. Results showed that the MODIS alpine grassland fPAR product, examined by using DCRP, and traditional in situ fPAR observation had a significant relationship at the spatial and temporal scales. The decadal MODIS fPAR trend analysis showed that, average growing season fPAR increased by 1.2 × 10−4 per year and in total increased 0.86% from 2002 to 2011 in alpine grassland, when most of the fPAR increments occurred in southeast and center of the Northern Tibetan Plateau, the alpine grassland tended to recover from degradation slightly. However, climatic factors have influenced the various alpine grassland vegetation fPAR over a period of 10 years; precipitation significantly affected the alpine meadow fPAR in the eastern region, whereas temperature considerably influenced the alpine desert steppe fPAR in the west region. These findings suggest that the regional heterogeneity in alpine grassland fPAR results from various environmental factors, except for vegetation characteristics, such as canopy structure and leaf area.http://www.sciencedirect.com/science/article/pii/S1674927816300740fPARAlpine grasslandMODISNorthern Tibetan PlateauClimate change |
| spellingShingle | Bao-Xiong Chen Xian-Zhou Zhang Yu-Fang Sun Jing-Sheng Wang Yong-Tao He Alpine grassland fPAR change over the Northern Tibetan Plateau from 2002 to 2011 Advances in Climate Change Research fPAR Alpine grassland MODIS Northern Tibetan Plateau Climate change |
| title | Alpine grassland fPAR change over the Northern Tibetan Plateau from 2002 to 2011 |
| title_full | Alpine grassland fPAR change over the Northern Tibetan Plateau from 2002 to 2011 |
| title_fullStr | Alpine grassland fPAR change over the Northern Tibetan Plateau from 2002 to 2011 |
| title_full_unstemmed | Alpine grassland fPAR change over the Northern Tibetan Plateau from 2002 to 2011 |
| title_short | Alpine grassland fPAR change over the Northern Tibetan Plateau from 2002 to 2011 |
| title_sort | alpine grassland fpar change over the northern tibetan plateau from 2002 to 2011 |
| topic | fPAR Alpine grassland MODIS Northern Tibetan Plateau Climate change |
| url | http://www.sciencedirect.com/science/article/pii/S1674927816300740 |
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