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The spatiotemporal characteristics of spring phenophase changes of Fraxinus chinensis in China from 1952 to 2007

Science China Earth Sciences 2012年第6期55卷 991-1000页

作者： WANG HuanJiong DAI JunHu GE QuanSheng Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China Graduate School of Chinese Academy of Sciences Beijing 100049 China

We selected widely distributed and well observed plant species Fraxinus chinensis to study the formation mechanism of geographical distribution of the plant phenophase changes and revealed their spatiotemporal dynamics in China. Based on the first leaf date （FLD） data at 12 sites derived from Chinese Phenological Observation Network （CPON） and related meteoro- logical data, we developed and validated the process-based model of FLD for Fraxinus chinensis. After reconstructing data series of FLD for Fraxinus chinensis over the study area from 1952 to 2007, we analyzed different spatiotemporal patterns of phenophase changes of this species. The results suggested that the process-based model was able to simulate the FLD accu- rately for Fraxinus chinensis on large spatial and temporal scales, because of the consideration of different budding rate re- sponded to the air temperatures during the dormancy and the quiescence in accordance with the physiological mechanism of plants. The geographical distribution of the spring phenology in temperate regions was determined by the spatial pattern of daily average air temperature. The changes of FLD for Fraxinus chinensis revealed significant phenological advances in most areas. However, it showed delayed trends in a few sites. The overall average change trend was -1 .l days/decade. This result was consistent with the advanced trend in other regions of the North Hemisphere. The changes of FLD showed a noticeable regional variation with clearer advance in the north than in the south. The FLD in northern China showed an average ad- vance as high as -2.0 days/decade （P〈0.01）. And the advance in northeastern and northwestern China was respectively -1.5 and -1.4 days/decade （P〈0.01）. Furthermore, eastern and central regions showed a minor trend, which was -1.0 days/decade （P〈0.05）. The smallest and non-significant advance appeared in southwestern and southern China.

关键词： phenophases phenological model first leaf Fraxinus chinensis

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Phenological study of congeneric Myrcia species and Clethra scabra in wetland and drained habitats in a Montane Forest

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Journal of Forestry Research 2021年第4期32卷 1419-1427页

作者： Vinícius Londe Jaqueline Alves Pereira Hildeberto Caldas de Sousa Lisbon Portugal Ecology of Tropical Biomes Graduate Course Federal University of Ouro PretoOuro PretoMinas Gerais 35400-000Brazil Department of Biodiversity Evolution and EnvironmentFederal University of Ouro PretoOuro PretoMinas Gerais 35400-000Brazil

Although important,phenological studies comparing congeneric species or the same species growing in different habitats are still scarce for the ***,we integrate phylogeny,ecology and biometeorology to verify whether the phenophases of congeneric species Myrcia laruotteana and Myrcia amazonica or Clethra scabra differ when their populations inhabit wetland and drained habitats and to determine what abiotic factors affect the vegetative and reproductive phenophases of these species in distinct habitat *** collected data on phenological events of 80 trees for 1 year in Itacolomi State Park,Brazil,and related them to abiotic local *** to our expectation,the phenophases of the congeneric species did not differ between habitats,but the reproductive phenophases of *** did and was greater in drained *** of *** were affected by the depth of the water table and maximum temperature in the wetland ***,precipitation,maximum temperature and relative humidity influenced Myrcia and Clethra in the drained *** differences between *** populations suggest that this species is phenotypically plastic and can present distinct phenophases depending on the habitat it *** the other hand,the congeneric Myrcia species may have similar phenophases in distinct habitats because of their shared similarities during their *** study provides a better understanding of the ecology of these species and their adaptations to different abiotic *** of this nature are important in a changing world and can inform strategies for adaptive management.

关键词： Abiotic factors Forest ecology phenophases Soil types

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Phenology of a tropical dry deciduous forest of Bhadra wildlife sanctuary,southern India

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Ecological Processes 2014年第1期3卷 263-274页

作者： Appaji Nanda Hebbalalu S Suresh Yelugere L Krishnamurthy Department of Postgraduate Studies and Research in Applied Botany Bioscience ComplexJnana SahyadriKuvempu UniversityShankaraghattaShimoga 577451KarnatakaIndia Biodiversity Education and Research Laboratory Environmental Study CentreSanthekaduruShimoga 577222KarnatakaIndia Centre for Ecological Sciences Indian Institute of ScienceBangalore 560012KarnatakaIndia

Introduction:This paper describes the leafing,flowering and fruiting phenology of canopy trees in the dry deciduous forest of Bhadra wildlife sanctuary from June 2004 to May ***:All the woody canopy individuals(>20 cm girth at breast height)were identified and tagged with a unique number along a transect of approximately 2 Km comprising 157 individuals of 22 *** were made at monthly intervals from June 2004 to May 2006 for leafing,flowering and fruiting ***:Leaf fall starts in September,with a peak in December and *** initiation begins in February,with a peak in April before the *** expansion starts in February from pre-monsoon with a peak in May and July during the *** senescence begins in September to November and peaks in January to *** bud initiates in January with a peak in April and May,and pollination begins in April with a peak in May and July before the monsoon to onset of *** bud initiates in May with a peak in September and *** fruit was observed in May with a peak in September and *** fall begins in November with a peak in ***:Our results show that leafing and flowering activities occur in the summer or *** patterns occur during the monsoon to post-monsoon *** among various phenophases indicates that leaf senescence flower initiation and fruit fall have strong seasonality.

关键词： Bhadra wildlife sanctuary Dry deciduous forest phenophases Rayleigh’s Z test Seasonality

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Differences in response of desert plants of different ecotypes to climate warming:a case study in Minqin, Northwest China

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Journal of Arid Land 2012年第2期4卷 140-150页

作者： ZhaoFeng CHANG ShuJuan ZHU FuGui HAN ShengNian ZHONG Minqin National Station for Desert Steppe Ecosystem Studies Minqin 733300 China Gansu Key Laboratory of Desertification Combating Lanzhou 730070 China Gansu Desert Control Research Institute Lanzhou 730070 China

Globally climates are warming. How do desert plants of different ecotypes respond to the climate change？ This paper studied the differing responses to climate warming shown by desert plants of different ecotypes through analyzing the phenology and meteorological data of 22 desert plant species growing in Minqin Desert Bo- tanical Garden in Northwest China during the period 1974-2009. The results indicate：（1） The temperature in the study area has risen quickly since 1974, and plants＇ growing periods became longer. The spring phenology of mesophytes advanced, and the autumn phenology of xerophytes was delayed; （2） The starting dates of spring phenophase of mesophytes and xerophytes differed significantly and both showed an advancing trend; （3） The spring phenology of mesophytes advanced by more days than that of xerophytes, whereas the autumn phenology of mesophytes was delayed by less days than that of the xerophytes; and （4） Mesophytes are more sensitive than xerophytes to rising temperature in spring and falling temperature in autumn. These findings are of value in plant management and regional introduction of different species.

关键词： desert plants plant phenology phenophases ecotypes climate warming Minqin

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Features of Phenological Phases of Blackberry in the Conditions of the Samarkand Region

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American Journal of Plant Sciences 2024年第10期15卷 877-883页

作者： Noila Shokirovna Jumakulova Flora Djabbarovna Kabulova Alisher Nuraliyevich Khujanov Yigitali Shavkatillayevich Tashpulatov Mukaddas Pulat Kizi Elomonova Department of Plant Physiology and Microbiology Samarkand of Agro Innovations and Research University Samarkand Uzbekistan

The article presents data on the study of phenological phases of blackberries in the Samarkand region in 2022-2023. The influence of differing in weather conditions, especially at the beginning and end of the growing season, on the timing of onset and duration of the main phenophases of the plant is analyzed. The objects of the study were 4 varieties of different genetic and ecological-geographical origin of foreign selection: Brazos, Jumbo, Thornfree and Karaka Black. Phenological observations were carried out according to the classical methodology developed for this crop in Russia. The timing of all phenophases was significantly dependent on the temperature conditions of the growing season: in the year with a higher sum of average daily temperatures, the corresponding phenophases occurred earlier. According to preliminary data, the climatic indicators of the vegetation period of this region allow for the cultivation of blackberries of the main morphological groups (erect, semi-erect, trailing) and different ripening periods.

关键词： Blackberry phenophases Flowering Ripening Time End of Growth

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