naa a22 4500 510738214 CHVBK 20180411083018.0 cr unu---uuuuu 180411e20130301xx s 000 0 eng 10.1007/s11284-012-1015-8 doi (NATIONALLICENCE)springer-10.1007/s11284-012-1015-8 Seasonal variation of vegetation productivity over an alpine meadow in the Qinghai-Tibet Plateau in China: modeling the interactions of vegetation productivity, phenology, and the soil freeze-thaw process [Elektronische Daten] [Haibo Wang, Mingguo Ma, Xufeng Wang, Wenping Yuan, Yi Song, Junlei Tan, Guanghui Huang] Phenology controls the seasonal activities of vegetation on land surfaces and thus plays a fundamental role in regulating photosynthesis and other ecosystem processes. Therefore, accurately simulating phenology and soil processes is critical to ecosystem and climate modeling. In this study, we present an integrated ecosystem model of plant productivity, plant phenology, and the soil freeze-thaw process to (1) improve the quality of simulations of soil thermal regimes and (2) estimate the seasonal variability of plant phenology and its effects on plant productivity in high-altitude seasonal frozen regions. We tested different model configurations and parameterizations, including a refined soil stratification scheme that included unfrozen water in frozen soil, a remotely sensed diagnostic phenology scheme, and a modified prognostic phenology scheme, to describe the seasonal variation in vegetation. After refined soil layering resolution and the inclusion of unfrozen water in frozen soil, the results show that the model adequately reproduced the soil thermal regimes and their interactions observed at the site. The inclusion of unfrozen water in frozen soil was found to have a significant effect on soil moisture simulation during the spring but only a small effect on soil temperature simulation at this site. Moreover, the performance of improved phenology schemes was good. The phenology model accurately predicted the start and end of phenology, and its precise prediction of phenology variation allows an improved simulation of vegetation production. The Ecological Society of Japan, 2012 Alpine meadow nationallicence Qinghai-Tibet Plateau (QTP) nationallicence Unfrozen water nationallicence Primary production nationallicence Phenology nationallicence Freezing-thawing process nationallicence Wang Haibo Cold and Arid Regions Environmental and Engineering Research Institute (CAREERI), Chinese Academy of Sciences, 320# West Dong Gang Road, 730000, Lanzhou, Gansu, China aut Ma Mingguo Cold and Arid Regions Environmental and Engineering Research Institute (CAREERI), Chinese Academy of Sciences, 320# West Dong Gang Road, 730000, Lanzhou, Gansu, China aut Wang Xufeng Cold and Arid Regions Environmental and Engineering Research Institute (CAREERI), Chinese Academy of Sciences, 320# West Dong Gang Road, 730000, Lanzhou, Gansu, China aut Yuan Wenping College of Global Change and Earth System Science, Beijing Normal University, 100875, Beijing, China aut Song Yi Institute of Earth Environment, Chinese Academy of Sciences, 710075, Xi'an, China aut Tan Junlei Cold and Arid Regions Environmental and Engineering Research Institute (CAREERI), Chinese Academy of Sciences, 320# West Dong Gang Road, 730000, Lanzhou, Gansu, China aut Huang Guanghui Cold and Arid Regions Environmental and Engineering Research Institute (CAREERI), Chinese Academy of Sciences, 320# West Dong Gang Road, 730000, Lanzhou, Gansu, China aut Ecological Research Springer Japan 28/2(2013-03-01), 271-282 0912-3814 28:2<271 2013 28 11284 https://doi.org/10.1007/s11284-012-1015-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11284-012-1015-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wang Haibo Cold and Arid Regions Environmental and Engineering Research Institute (CAREERI), Chinese Academy of Sciences, 320# West Dong Gang Road, 730000, Lanzhou, Gansu, China aut NATIONALLICENCE 700 1- Ma Mingguo Cold and Arid Regions Environmental and Engineering Research Institute (CAREERI), Chinese Academy of Sciences, 320# West Dong Gang Road, 730000, Lanzhou, Gansu, China aut NATIONALLICENCE 700 1- Wang Xufeng Cold and Arid Regions Environmental and Engineering Research Institute (CAREERI), Chinese Academy of Sciences, 320# West Dong Gang Road, 730000, Lanzhou, Gansu, China aut NATIONALLICENCE 700 1- Yuan Wenping College of Global Change and Earth System Science, Beijing Normal University, 100875, Beijing, China aut NATIONALLICENCE 700 1- Song Yi Institute of Earth Environment, Chinese Academy of Sciences, 710075, Xi'an, China aut NATIONALLICENCE 700 1- Tan Junlei Cold and Arid Regions Environmental and Engineering Research Institute (CAREERI), Chinese Academy of Sciences, 320# West Dong Gang Road, 730000, Lanzhou, Gansu, China aut NATIONALLICENCE 700 1- Huang Guanghui Cold and Arid Regions Environmental and Engineering Research Institute (CAREERI), Chinese Academy of Sciences, 320# West Dong Gang Road, 730000, Lanzhou, Gansu, China aut NATIONALLICENCE 773 0- Ecological Research Springer Japan 28/2(2013-03-01), 271-282 0912-3814 28:2<271 2013 28 11284 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer