内蒙古草原草本植物萌芽期时空变化（英文）

编号 zgly0001691437

文献类型 期刊论文

文献题名 内蒙古草原草本植物萌芽期时空变化（英文）

作者 陶泽兴  戴君虎  王焕炯  黄文婕  葛全胜 

作者单位 KeyLaboratoryofLandSurfacePatternandSimulation  InstituteofGeographicSciencesandNaturalResourcesResearch  CAS  UniversityofChineseAcademyofSciences  CollegeofLifeSciences  ChifengUniversity 

母体文献 Journal of Geographical Sciences 

年卷期 2019年12期

年份 2019 

分类号 Q945 

关键词 phenologicalmodel  herbaceousplants  soilmoisture  precipitation  spatiotemporalpattern  InnerMongolia 

文摘内容 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 temperature-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 R~2 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.