Abstract
Based on the remote sensing and meteorological data collected from the 1981–2004 period, we calculated the alpine grassland Net Primary Productivity (NPP) in Northern Tibet using the Carnegie–Ames–Stanford Approach (CASA), and subsequently analyzed the trend of grassland NPP changes and its response to climate change from 1981 to 2004. The results show that alpine grassland NPP in Northern Tibet was very low in the last 24 years with a relatively large yearly variation. Most of the grassland area (88.61%) in Northern Tibet did not show a significant annual NPP change. The area with a significant decrease of annual NPP variation accounted for only 11.30% of the total grasslands surface, whereas that with a significant increase accounted for 0.09%. In recent years, the precipitation variation in Northern Tibet resulted in an increase of grassland NPP, though solar radiation resulted in decreased grassland NPP. During the 1981–2004 period, total solar radiation, precipitation and temperature, with a decreasing impact magnitude factor, have impacted the grassland NPP in Northern Tibet. The impact of regional climate change on grassland NPP was overall more detrimental than positive.
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References
Fang J, Piao S, Tang Z (2001) Inter-annual variability in net primary production and precipitation. Science 293:1723a
Gansu Grassland Ecoloical Research Institute and Animal Husbandry Bureau of Nagqu Prefecture of Tibet (1991) Grassland resources and animal production in the Nagqu region of Tibet. Gansu Science and Technology Press, Lanzhou China
Gao Q, Wan Y, Li Y, Lin E, Sheng W, Jiangcun WZ, Wang B, Li W (2007) Trends of grassland NPP and its response to human activity in Northern Tibet. Acta Ecol Sin 27(11):4612–4619 (in Chinese)
Knapp AK, Smith MD (2001) Variation among biomes in temporal dynamics of aboveground primary production. Science 291:481–484
Li S, Niu Z, Li B (2005) Study on remote sensing driving factors of NPP process model. Res Soil Water Conserv 12(3):120–123
Liu X, Ma Y, Laba, Yu Z (2003) Climatic Regionalization of the animal husbandry of Nagqu region. Meteorological Press, Beijing China
Luo T, Li W, Leng Y, Yue Y (1998) Estimation of total biomass and potential distribution of net primary productivity in the Tibetan Plateau. Geogr Res 17(4):337–344
Luo T, Li W, Luo J, Wang Q (1999) A comparative study on biological production of major vegetation types on the Tibetan Plateau. Acta Ecol Sin 19(6):823–831
Melillo JM, McGuire AD, Kicklighter DW (1993) Global climate change and terrestrial net primary production. Nature 363:234–240
Nemani RR, Keeling CD, Hashimoto H (2003) Climate-driven increases in global terrestrial net primary production from 1982 to 1999. Science 300:1560–1563
Odum EP (1959) Fundamentals of ecology. Saunders, Philadelphia USA
Piao S, Fang J, Guo Q (2001) Application of CASA model to the estimation of Chinese terrestrial net primary productivity. Acta Phytoecol Sin 25(5):603–608
Piao S, Fang J (2002) Terrestrial net primary production and its spatio-temporal patterns in Qinghai–Xizang Plateau, China during 1982–1999. J Nat Resour 17(3):373–380
Piao S, Fang J, He J (2006) Variations in vegetation net primary production in the Qinghai–Xizang Plateau, China, from 1982 to 1999. Clim Change 74:253–267
Potter C (2004) Predicting climate change effects on vegetation, soil thermal dynamics, and carbon cycling in ecosystems of interior Alaska. Ecol Model 175(1):1–24
Potter CS, Randerson J, Field CB et al. (1993) Terrestrial ecosystem production: a process model based on global satellite and surface data. Glob Biogeochem Cycles 7:811–841
Tao F, Yokozawa M, Zhang Z, Xu Y, Yousay H (2005) Remote sensing of crop production in China by production efficiency models: models comparisons, estimates and uncertainties. Ecol Model 183(4):385–396
Wang J, Meng J, Cai Y (2008) Assessing vegetation dynamics impacted by climate change in the southwestern karst region of China with AVHRR NDVI and AVHRR NPP time-series. Environ Geol 11:1185–1195. doi:10.1007/s00254-007-0901-9
Yu G, He H, Liu X, Niu D (2004) Study on spatialization technology of terrestrial eco-information in China (I): the approach of spatialization in meteorology/climate information. J Nat Resour 19(4):537–544
Zhou C, Ouyang H, Wang Q Masataka W, Sun Q (2004) Estimation of net primary productivity in Tibetan Plateau. Acta Geogr Sin 59(1):74–79
Zhu W, Pan Y, Long Z, Chen Y, Li J, Hu H (2005) Estimating net primary productivity of terrestrial vegetation based on GIS and RS: a case study in Inner Mongolia, China. J Remote Sens 9(3):300–307
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Gao, Q., Li, Y., Wan, Y. et al. Dynamics of alpine grassland NPP and its response to climate change in Northern Tibet. Climatic Change 97, 515–528 (2009). https://doi.org/10.1007/s10584-009-9617-z
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DOI: https://doi.org/10.1007/s10584-009-9617-z