Are regional precipitation-productivity relationships robust to decadal-scale dry period?
降水-生产力的空间关系是否稳定不变?作者机构：School of GeographySouth China Normal UniversityShipai CampusGuangzhou 510631China College of Ecology and EnvironmentHainan UniversityHaikou 570228China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai)Zhuhai 519082China Department of Biology and Graduate Degree Program in EcologyColorado State UniversityFort CollinsCO 80523USA Tiantong National Forest Ecosystem Observation and Research StationSchool of Ecological and Environmental SciencesEast China Normal UniversityShanghai 200062China Institute of Eco-Chongming(IEC)Shanghai 200062China School of Atmospheric SciencesSun Yat-Sen UniversityGuangzhou 519082China
出 版 物：《Journal of Plant Ecology》 (植物生态学报（英文版）)
年 卷 期：2022年第15卷第4期
页 面：711-720页
核心收录：
基 金：supported by the National Natural Science Foundation of China(31922053) the start-up fund of Hainan University(Grant No.KYQD(ZR)21096) the National Key R&D Program of China(2017YFA0604801)
主 题：grassland net primary productivity precipitation–productivity relation drought climate change NDVI
摘 要：Precipitation(PPT)is the primary climatic determinant of plant growth and aboveground net primary productivity(ANPP)for many of the world’s major terrestrial ***,relationships between PPT and productivity can provide insight into how changes in climate may alter ecosystem functions *** PPT–ANPP relationships for grasslands are found remarkably similar around the world,but whether and how they change during periods of extended climatic anomalies remain ***,we quantifed how regional-scale PPTANPP relationships vary between an extended wet and a dry period by taking advantage of a 35-year record of PPT and NDVI(as a surrogate for ANPP)at 1700 sites in the temperate grasslands of northern *** found a sharp decrease in the strength of the spatial PPT–ANPP relationship during an 11-year period of below average *** attributed the collapse of this relationship to asynchrony in the responses of different grassland types to this decadal period of increased *** results challenge the robustness of regional PPT–productivity if aridity in grasslands is increased globally by climate change.
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