Back to Search
Start Over
Spatiotemporal changes in the bud-burst date of herbaceous plants in Inner Mongolia grassland
- Source :
- Journal of Geographical Sciences. 29:2122-2138
- Publication Year :
- 2019
- Publisher :
- Springer Science and Business Media LLC, 2019.
-
Abstract
- Phenological modeling is not only important for the projection of future changes of certain phenophases but also crucial for systematically studying the spatiotemporal patterns of plant phenology. Based on ground phenological observations, we used two existing tem-perature-based models and 12 modified models with consideration of precipitation or soil moisture to simulate the bud-burst date (BBD) of four common herbaceous plants—Xanthium sibiricum, Plantago asiatica, Iris lactea and Taraxacum mongolicum—in temperate grasslands in Inner Mongolia. The results showed that (1) increase in temperature promoted the BBD of all species. However, effects of precipitation and soil moisture on BBD varied among species. (2) The modified models predicted the BBD of herbaceous plants with R2 ranging from 0.17 to 0.41 and RMSE ranging from 9.03 to 11.97 days, better than classical thermal models. (3) The spatiotemporal pattern of BBD during 1980–2015 showed that species with later BBD, e.g. X. sibiricum (mean: day of year 135.30) exhibited an evidently larger spatial difference in BBD (standard deviation: 13.88 days) than the other species. Our findings suggest that influences of temperature and water conditions need to be considered simultaneously in predicting the phenological response of herbaceous plants to climate change.
- Subjects :
- geography
geography.geographical_feature_category
010504 meteorology & atmospheric sciences
biology
Phenology
05 social sciences
0507 social and economic geography
Climate change
Spatiotemporal pattern
Plantago asiatica
Herbaceous plant
biology.organism_classification
01 natural sciences
Grassland
Agronomy
Earth and Planetary Sciences (miscellaneous)
Precipitation
050703 geography
Water content
0105 earth and related environmental sciences
Subjects
Details
- ISSN :
- 18619568 and 1009637X
- Volume :
- 29
- Database :
- OpenAIRE
- Journal :
- Journal of Geographical Sciences
- Accession number :
- edsair.doi...........3bd9a2af0a23c4952343ba7d9bcada8e