Phenological variation and its relationship with meteorological factors in HulunBuir grasslands

Expand
  • Institute of Agricultural Resources and Regional Planning,Chinese Academy of Agricultural Sciences,Beijing 100081,China

Online published: 2019-01-22

Abstract

Accurately monitoring phenological period is of great scientific significance to the optimal management of grassland ecosystem. This paper adopted D-L fitting method and dynamic threshold method to invert the phenological period of HulunBuir grassland, analyzed the characteristics of its spatio-temporal changes, and discussed the relationship between phenological phase and meteorological factors by using MOD09Q1 dataset from 2000 to 2015. The results of the study indicated that: (1) The green-up date occurred in late April or early June (an average of the 138th day), and the withering phase occurred from September to late October (an average of the 277th day). The length of the growing season ranged from 3.5 to 6 months (an average of 136 days). (2) Spatially, in the western and northern HulunBuir grasslands, the green-up date was earlier but the withering date was later, and it had the longest growing season. While in the eastern and central HulunBuir grasslands, the green-up date was relatively later, but the withering was earlier, and the length of the growing season was shorter. Both the green-up date and the withering date showed a trend of moving earlier. The proportion moving earlier on the green-up date and withering date were 61.2% and 63.83%, respectively. The length of the growing season showed a prolonging trend, and the proportion in the prolonged growing season is 54.95%. (3) The main driving factors of the change of phenological trend were clarified based on the spatial correlation coefficients of phenological phase and annual average, seasonal temperature and precipitation at the pixel scale. The main reason for the advancement of the green-up date was the increase of precipitation in winter, while the main reasons for the advancement of the withering date were the increase of precipitation in spring and the increase of temperature in autumn. The research results can provide references for revealing the climate change of the HulunBuir grassland, and guidance for the herdsman to graze and to develop animal husbandry.

Cite this article

ZHANG Yu-jing, YANG Xiu-chun, GUO Jian, JIN Yun-xiang, Xu Bin, SHEN Ge, ZHANG Wen-bo . Phenological variation and its relationship with meteorological factors in HulunBuir grasslands[J]. Arid Land Geography, 2019 , 42(1) : 144 -153 . DOI: 10.12118/j.issn.1000-6060.2019.01.17

References

[1] MYNENI R B,KEELING C D,TUCKER C J,et al.Increased plant growth in the northern high latitudes from 1981 to 1991[J].Nature,1997,386(6626):698-702.
[2] GE Quan Sheng,WANG Huanjiong,RUTISHAUSER T,et al.Phenological response to climate change in China: a meta-analysis[J].Global Change Biology,2015,21(1):265-274.
[3] 陈效逑,王林海.遥感物候学研究进展[J].地理科学进展,2009,28(1):33-40. [CHEN Xiaoqiu,Wang Linhai.Progress in remote sensing phenological research[J].Progress in Geography,2009,28(1):33-40.]
[4] 郭剑,陈实,徐斌,等.基于SPOT-VGT数据的锡林郭勒盟草原返青期遥感监测[J].地理研究,2017,36(1):37-48.[GUO Jian,CHEN Shi,XU Bin,et al.Remote sensing monitoring of grassland vegetation greenup based on SPOT-VGT in Xilingol League[J].Geographical Research,2017,36(1):37-48.]
[5] 徐浩杰,杨太保.近13a来黄河源区高寒草地物候的时空变异性[J].干旱区地理,2013,36(3):467-474.[XU Haojie,YANG Taibao.Spatial-temporal pattern variations of alpine grassland phenology in source region of the Yellow River from 2000 to 2012[J].Arid Land Geography,2013,36(3):467-474.]
[6] 马勇刚,张弛,塔西甫拉提·特依拜.中亚区域陆表植被物候时空变化特征分析[J].干旱区地理,2014,37(2):310-317.[MA Yonggang,ZHANG Chi,TIYIP Tashpolat.Spatial-temporal change of land surface in Central Asia arid zone[J].Arid Land Geography,2014,37(2):310-317.]
[7] 马晓芳,陈思宇,邓婕,等.青藏高原植被物候监测及其对气候变化的响应[J].草业学报,2016,25(1):13-21.[MA Xiaofang,CHEN Siyu,DENG Jie,et al.Vegetation phenology dynamics and its response to climate change on the Tibetan Plateau[J].Acta Prataculturae Sinica,2016,25(1):13-21.]
[8] CAO Ruyin,SHEN Miaogen,ZHOU Ji,et al.Modeling vegetation green-up dates across the Tibetan Plateau by including both seasonal and daily temperature and precipitation[J].Agricultural and Forest Meteorology,2018,249:176-186.
[9] LIU Yujie,QIN Ya,GE Quansheng,et al.Responses and sensitivities of maize phenology to climate from 1981 to 2009 in Henan Province,China[J].Journal of Geographical Sciences,2017,27(9):1072-1084.
[10] 陈效逑,李倞.内蒙古草原羊草物候与气象因子的关系[J].生态学报,2009,29(10):5280-5290.[CHEN Xiaoqiu,LI Jing.Relationships between Leymus chinensis phenology and meteorological factors in Inner Mongolia grasslands[J].Acta Ecological Sinica,2009,29(10):5280-5290.]
[11] SHEN Miaogen,PIAO Shilong,CONG Nan,et al.Precipitation impacts on vegetation spring phenology on the Tibetan Plateau[J].Global Change Biology,2015,21(10):3647-3656.
[12] ZHAO Guangshuai,SHI Peili,ZONG Ning,et al.Declining precipitation enhances the effect of warming on phenological variation in a semiarid Tibetan meadow steppe[J].Journal of Resources and Ecology,2017,8(1):50-56.
[13] SHA Zongyao,ZHONG Jialin,BAI Yongfei,et al.Spatio-temporal patterns of satellite-derived grassland vegetation phenology from 1998 to 2012 in Inner Mongolia,China[J].Journal of Arid Land,2016,8(3):462-447.
[14] REN Shilong,CHEN Xiaoqiu,AN Shuai.Assessing plant senescence reflectance index-retrieved vegetation phenology and its spatiotemporal response to climate change in the Inner Mongolian grassland[J].International Journal of Biometeorology,2017,61(4):601-612.
[15] 浮媛媛,赵建军,张洪岩,等.基于生态地理分区的大兴安岭植被物候时空变化[J].应用生态学报,2016,27(9):2797-2806.[FU Yuanyuan,ZHAO Jianjun,ZHANG Hongyan,et al.Spatiotemporal variation of vegetation phenology in the Daxing’an Mountains stratified by eco-geographical regions[J].Chinese Journal of Applied Ecology,2016,27(9):2797-2806.]
[16] 刘红海,王宏,李晓兵,等.内蒙古温带典型草原物候期的变化研究[J].北京师范大学学报(自然科学版),2016,52(4):512-517.[LIU Honghai,WANG Hong,LI Xiaobing,et al.Monitoring phenological phase of typical temperate steppe in Inner Mongolia[J].Journal of Beijing Normal University(Natural Science),2016,52(4):512-517.]
[17] 范德芹,赵学胜,郑周涛.内蒙古羊草草原物候及其对气候变化的响应[J].地理与地理信息科学,2016,32(6):81-86.[FAN Deqin,ZHAO Xuesheng,ZHENG Zhoutao.Phenology of Leymus chinensis steppe in Inner Mongolia and its response to climate changes[J].Geography and Geo-information Science,2016,32(6):81-86.]
[18] 苗百岭,梁存柱,韩芳,等.内蒙古主要草原类型植物物候对气候波动的响应[J].生态学报,2016,36(23):7689-7701.[MIAO Bailing,LIANG Cunzhu,HAN Fang,et al.Responses of phenology to climate change over the major grassland types[J].Acta Ecological Sinica,2016,36(23):7689-7701.]
[19] TANG Huan,LI Zhenwang,ZHU Zhiliang,et al.Variability and climate change trend in vegetation phenology of recent decades in the Greater Khingan Mountain Area,Northeastern China[J].Remote Sensing,2015,7(9):11914-11932.
Options
Outlines

/