Grassland ecosystems play important roles in the global carbon cycle. The net primary productivity (NPP) of grassland ecosystems has become the hot spot of terrestrial ecosystems. To simulate the NPP in the grasslands of southern China, we built a land portfolio assessment (LPA) model. The LPA model was named according to the framework and principle of this model. From the framework of the model aspect, it was mainly driven by two parameters: leaf area index (LAI) and photosynthesis accumulation (PA). LAI is an extremely important structural characteristic of grassland and directly related to the exchange of energy, CO2 and mass at a variety of scales. PA is represented by the amount of net photosynthetic production based on fixed-point observation. From the principle of the model aspect, it is represented by the inherent implication of NPP and a part of land portfolio assessment. The results showed that the NPP values in the study area had a decreasing trend from east to west and south to north and that the mean NPP was 320 g C m−2 year−1 from 2001 to 2010. Correlations analysis showed that the correlation coefficient (r) between NPP and highest monthly mean temperature of a year was the maximum (0.6422), and the r value between NPP and annual precipitation was the minimum (0.3821). Using trial and error, the LPA model accurately simulated the NPP dynamics of southern China’s grassland ecosystem, and the results were biologically realistic.
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Bai YF, Wu JG, Clark CM, Naeem S, Pan QM, Huang JH, Zhang LX, Han XG (2010) Tradeoffs and thresholds in the effects of nitrogen addition on biodiversity and ecosystem functioning: evidence from inner Mongolia grasslands. Glob Change Biol 16:358–372
Bao YH, Bao GG, Guo LB, Hai QS (2009) Evaluation on vegetation net primary productivity using MODIS data in Inner Mongolia. PIAGENG Intell Inf Control Commun Technol Agric Eng 7490:26–34
Burke IC, Lauenroth WK, Parton WJ (1997) Regional and temporal variation in net primary production and nitrogen mineralization in grasslands. Ecology 78:1330–1340
Gebauer RLE, Reynolds JF, Strain BR (1996) Allometric relations and growth in Pinus taeda: the effect of elevated CO2 and changing N availability. New Phytol 134:85–93
Grant RF, Baldocchi DD, Ma S (2012) Ecological controls on net ecosystem productivity of a seasonally dry annual grassland under current and future climates: modelling with ecosys. Agric For Meteorol 152:189–200
He Y, Dong WJ, Guo XY, Ji JJ (2007) The Chinese terrestrial NPP simulation from 1971 to 2000. J Glaciol Geocryol (China) 29:226–232
Heisler-White J, Blair JM, Kelly EF, Harmoney K, Knapp AK (2009) Contingent productivity responses to more extreme rainfall regimes across a grassland biome. Glob Change Biol 15:2894–2904
Hik DS, Jefferies RL (1990) Increases in the net above-ground primary production of a salt-marsh forage grass: a test of the predictions of the herbivore-optimization model. J Ecol 78:180–195
Hooper DU, Johnson L (1999) Nitrogen limitation in dryland ecosystems: responses to geographical and temporal variation in precipitation. Biogeochemistry 46:247–293
Huang YH, Zhou GY, Tang XL, Jiang H, Zhang DQ, Zhang QM (2011) Estimated soil respiration rates decreased with long-term soil microclimate changes in successional forests in southern China. J Environ Manag 48:1189–1197
IPCC (2001) Climate change 2001: the scientific basis. Cambridge University Press, Cambridge
IPCC (2007) Climate change 2007: the physical science basis. Cambridge University Press, Cambridge
Li T, Granta RF, Flanagan LB (2004) Climate impact on net ecosystem productivity of a semi-arid natural grassland: modeling and measurement. Agric For Meteorol 126:99–116
Li JZ, Lin S, Taube F, Pan QM, Dittert K (2011) Above and belowground net primary productivity of grassland influenced by supplemental water and nitrogen in Inner Mongolia. Plant Soil 340:254–264
Lieth H, Whittaker RH (1975) Primary productivity of the biosphere. Springer, New York
Liu J, Chen JM, Cihlar J, Park WM (1997) A process-based boreal ecosystem productivity simulator using remote sensing inputs. Remote Sens Environ 62:158–175
Matsushita B, Xu M, Chen J, Kameyaman S, Tamur M (2004) Estimation of regional net primary productivity (NPP) using a process-based ecosystem model: how important is the accuracy of climate data? Ecol Model 178:371–388
Melillo JM, Mcguire AD, Kicklighter DW, Moore B, Vorosmarty CJ, Schloss AL (1993) Global climate change and terrestrial net primary production. Nature 363:1234–1240
Meng JH, Wu BF, Zhou YM (2005) Monitoring terrestrial net primary productivity of China using BIOME-BGC model based on remote sensing. In: IGARSS’05: 25th IEEE international geoscience and remote sensing symposium, vol 5, pp 3105–3108
Pan YD, Mcguire AD, Kicklighter DW, Melillo JM (1996) The importance of climate and soils for estimates of net primary production: a sensitivity analysis with the terrestrial ecosystem models. Glob Change Biol 2:5–23
Paruelo JM, Lauenroth WK, Burke IC, Sala OE (1999) Grassland precipitation-use efficiency varies across a resource gradient. Ecosystems 2:64–68
Ripley BD (1981) Spatial statistics. Wiley, New York
Ruimy A, Saugier B, Dedieu G (1994) Methodology for the estimation of terrestrial net primary production from remotely sensed data. J Geophys Res 99:5263–5283
Swemmer AM, Knapp AK, Snyman HA (2007) Intra-seasonal precipitation patterns and above-ground productivity in three perennial grasslands. J Ecol 95:780–788
Xu XB, Tan Y, Yang GS, Li HP, Su WZ (2011) Impacts of China’s Three Gorges Dam Project on net primary productivity in the reservoir area. Sci Total Environ 409:4656–4662
Yang YH, Fang JY, Pan YD, Ji CJ (2009) Aboveground biomass in Tibetan grasslands. J Arid Environ 73:91–95
Zhang FM, Ju WM, Chen JM, Wang SQ, Yu GR, Han SJ (2012) Characteristics of terrestrial ecosystem primary productivity in East Asia based on remote sensing and process-based model. J Appl Ecol (China) 23:307–318
Zhao MS, Runnings SW (2006) Sensitivity of moderate resolution imaging spectroradiometer (MODIS) terrestrial primary production to the accuracy of meteorological reanalyses. J Geophys Res 111:G01002
Zhao GS, Wang JB, Fan WY, Ying TY (2011) Vegetation net primary productivity in Northeast China in 2000–2008: simulation and seasonal change. J Appl Ecol (China) 22:621–630
Zhou Y, Zhu Q, Chen JM, Wang YQ, Liu J, Sun R, Tang S (2007) Observation and simulation of net primary productivity in Qilian Mountain, western China. J Environ Manag 85:574–584
Zhu WQ, Pan YZ, Long ZH, Chen YH, Li J, Hu HB (2005) Estimating net primary productivity of terrestrial vegetation based on GIS and RS: a case study in Inner Mongolia, China. J Remote Sens (China) 9:300–307
We are grateful to the associate editor and anonymous reviewers for their illuminating comments. This work was supported by the Key Project of the Chinese National Programs for Fundamental Research and Development (973 Program, 2010CB950702), China’s High-tech Special Projects (863 Plan, No. 2007AA10Z231) and Asia–Pacific Network for Global Change Research Project (ARCP2011-06CMY-Li).
Zhengguo Sun and Chengming Sun contributed equally to this study.
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Sun, Z., Sun, C., Zhou, W. et al. Evaluating the net primary productivity in the grasslands of southern China from 2001 to 2010 using a new land portfolio assessment model. Plant Ecol 214, 1223–1232 (2013). https://doi.org/10.1007/s11258-013-0246-2
- Productivity in the grasslands of southern China
- Spatial and temporal pattern of NPP
- Land portfolio assessment model
- Ecosystem modelling
- Grassland ecosystem