Nocturnal sap flow variation characteristics and main influencing factors of Salix psammophila branches in different orientations
LIU Wenjuan1, PEI Zhiyong1, CHEN Hongwei2, YANG Jianjun3, SUN Kai1, ZHANG Shiji1
1. College of Energy and Transportation Engineering of Inner Mongolia Agricultural University, 010018, Hohhot, China; 2. Ordos Forestry and Grassland Bureau, 017000, Ordos, Inner Mongolia, China; 3. Inner Mongolia Ordos City Afforestation Farm, 014300, Ordos, Inner Mongolia, China
Abstract:[Background] Salix psammophila is one of the tree species with the largest artificial afforestation area in desert areas of China. For a long time, the water use of S. psammophila in arid and rainy seasons has formed its own unique water consumption strategy, which is an important basis for studying the rationalization of water use. Therefore, it is of great significance to study the variation characteristics and main influencing factors of nocturnal sap flow of S. psammophila in different orientations for understanding the orientation difference of nocturnal water use of S. psammophila and its adaptability to the environment. [Methods] In this study, 3-year-old S. psammophila was used as the research object, and the heat balance wrap stem flow meter (EMS62) and small weather station (HOBO U30) were used to simultaneously monitor the sap flow rate of S. psammophila in different directions and the changes of meteorological factors such as solar radiation (R), temperature (Ta) and relative humidity (RH). Combined with Pearson correlation analysis and multiple regression method. The characteristics and main influencing factors of the sap flow rate of S. psammophila in different directions were analyzed. [Results] 1) The order of sap flow velocity of S. psammophila was north > east > south > west. 2)Before the rainy season, the sap flow rate of S. psammophila in all directions showed a "bimodal" curve, and the time for the northward sap flow rate to reach the second peak was delayed by about 2 h. The sap flow rate in all directions the rainy season and after the rainy season showed a "several" curve, and the start and end time of sap flow the rainy season were delayed by about 30 min. 3) The proportion of nocturnal flow in east, south, west, north to the whole day flow showed a U-shaped curve, and the fluctuation ranges were 20%-46%, 21%-41%, 25%-43% and 23%-43%. 4) During the observation period, the correlation coefficient between nocturnal sap flow and relative humidity and saturated vapor pressure difference was P<0.01. Before the rainy season and the rainy season, the determination coefficient R2 between the nocturnal sap flow in each direction and the meteorological factors was greater than 0.46, but after the rainy season, the determination coefficient R2 between the nocturnal sap flow in different directions and the meteorological factors was less than 0.34. [Conclusions] Rainfall and other environmental factors directly affect the nocturnal sap flow rate of S. psammophila, and the degree of influence is different in different directions of S. psammophila. This study reveals the water use law of branches in different directions of S. psammophila, which can provide scientific basis for studying nocturnal water use.
刘文娟, 裴志永, 陈宏伟, 杨建军, 孙凯, 张世纪. 沙柳不同方位枝条液流变化及主要影响因子[J]. 中国水土保持科学, 2024, 22(5): 141-150.
LIU Wenjuan, PEI Zhiyong, CHEN Hongwei, YANG Jianjun, SUN Kai, ZHANG Shiji. Nocturnal sap flow variation characteristics and main influencing factors of Salix psammophila branches in different orientations. SSWC, 2024, 22(5): 141-150.
GRANIER A. Sap flow measurements in Douglas-fir tree trunks by means of a new thermal method[J]. Annals of Forest Science,1987,44(1):1.
[2]
党宏忠,冯金超,韩辉.沙地樟子松边材液流速率的方位差异特征[J].林业科学,2020,56(1):29. DANG Hongzhong, FENG Jinchao, HAN Hui, et al. Characteristics of azimuthal variation of sap flux density in Pinus sylvestris var.mongolica grown in sandy land [J]. Scientia Silvae Sinicae, 2020, 56(1):29.
[3]
韩辉,张学利,党宏忠,等.沙地赤松树干边材液流速率的方位特征研究[J].林业科学研究,2019,32(2):39. HAN Hui, ZHANG Xueli, DANG Hongzhong, et al. Azimuthal variation of the sap flow rate in the trunk of Pinus densiflora planted in sandy land[J]. Forest Research, 2019,32(2):39.
[4]
卜繁靖,郭月峰,祁伟,等.不同方位沙棘液流差异与环境因子的关系[J].江苏农业科学,2022,50(11):154. PU Fanjing, GUO Yuefeng, QI Wei, et al. The relationship between the difference of seabuckthorn sap flow in different directions and environmental factors[J]. Jiangsu Agricultural Sciences, 2022, 50(11):154.
[5]
KUME T, OTSUKI K, DU S, et al. Spatial variation in sap flow velocity in semiarid region trees:Its impact on stand-scale transpiration estimates.[J]. Hydrological Processes, 2021, 26:1161.
[6]
尤海舟,王超,赵广智,等.华北平原欧美107杨单株夜间液流分配特征及其环境响应[J].生态环境学报,2023,32(2):256. YOU Haizhou, WANG Chao, ZHAO Guangzhi, et al. Distribution characteristics of Populus euramericana nocturnal sap flow and its response to environmental factors in North China Plain[J]. Ecology and Environmental Sciences, 2023, 32(2):256.
[7]
方伟伟,吕楠,傅伯杰.植物夜间液流的发生、生理意义及影响因素研究进展[J].生态学报,2018,38(21):7521. FANG Weiwei, Lü Nan, FU Bojie. Research advances in nighttime sap flow density, its physiological implications, and influencing factors in plants[J].Acta Ecologica Sinica, 2018, 38(21):7521.
[8]
裴志永,郝少荣,乔敬伟,等.毛乌素沙地沙柳枝条茎流特征[J].生态环境学报,2019,28(1):48. PEI Zhiyong, HAO Shaorong, QIAO Jingwei, et al. Characteristics of stem flow of Salix psammophila’s branch in Mu Us Sand Land[J]. Ecology and Environmental Sciences, 2019, 28(1): 48.
[9]
党宏忠,冯金超,却晓娥,等.晋西黄土区苹果树边材液流速率的方位差异研究[J].林业科学研究,2019,32(2):46. DANG Hongzhong, FENG Jinchao, QUE Xiaoe, et al. Study on the azimuthal difference of sap flow velocity of apple trees in the loess area of western Shanxi province[J]. Forest Research, 2019, 32(2):46.
[10]
魏鸾葳,陈左司南,陈胜楠,等.降雨对河岸生态系统杨树树干液流及其环境控制的影响[J].水土保持学报,2023,37(4):284. WEI Luanwei, CHEN Zuosinan, CHEN Shengnan, et al. Effects ofrainfall on sap flow and its environmental controls in a riparian Poplar Plantation Ecosystem[J]. Journal of Soil and Water Conservation, 2023, 37(4):284.
[11]
王轶浩,张佳怡,王彦辉.重庆铁山坪马尾松树干液流变化规律及其个体差异[J].中国水土保持科学,2023,21(3):1. WANG Yihao, ZHANG Jiayi, WANG Yanhui. Variation of stem sap flows of Pinus massoniana forest and its differences among individual trees at Tieshanping of Chongqing[J]. Science of Soil and Water Conservation, 2023, 21(3):1.
[12]
刘洋,王烨,王斐,等.宽窄行栽植下毛白杨不同方位树干液流的差异[J].中南林业科技大学学报,2018,38(10):95. LIU Yang, WANG Ye, WANG Fei, et al. Azimuthal variation in sap flux density of Populus tomentosa under wide and narrow row planting scheme[J]. Journal of Central South University of Forestry & Technology, 2018, 38(10):95.
[13]
张哲,闵红梅,夏关均,等.高温胁迫对植物生理影响研究进展[J].安徽农业科学,2010,38(16):8338. ZHANG Zhe, MIN Hongmei, XIA Guanjun, et al. Researchadvances on influence of high temperature stress on some physiologyical characteristics of plants[J]. Journal of Anhui Agricultural Sciences, 2010, 38(16):8338.
[14]
韩磊,孙兆军,展秀丽,等.宁夏河东沙区柠条植株叶片蒸腾对干旱胁迫的响应[J].生态环境学报,2015,24(5):756. HAN Lei, SUN Zhaojun, ZHAN Xiuli, et al.Research on leaf transpiration response to soil water stress of Caragana korshinskii Kom. in Hedong Sandy Land of Ningxia[J]. Ecology and Environmental Sciences, 2015, 24(5):756.
[15]
WAISEL Y, LIPHSCHITZ N, KULLER Z. Patterns of water movement in trees and shrubs[J]. Ecology, 1972, 53, 520.
[16]
郝少荣,裴志永,段广东,等.不同时间尺度下环境因子与沙柳茎流关系的差异研究[J].干旱区资源与环境,2020,34(3):152. HAO Shaorong, PEI Zhiyong, DUAN Guangdong, et al. Relationships between environmental factors and Salix psammophila’s sap flow at different time scales[J]. Journal of Arid Land Resources and Environment, 2020, 34(3):152.
[17]
FANG Weiwei, LU Nan, ZHANG Yu,et al. Responses of nighttime sap flow to atmospheric and soil dryness and its potential roles for shrubs on the Loess Plateau of China[J]. Journal of Plant Ecology, 2017, 10:717.
[18]
杨强. 降雨对毛乌素沙地油蒿和沙柳蒸腾特性的影响[D].北京:北京林业大学,2016:23. YANG Qiang. Effect of rainfall on transpiration of Artemisia ordosica and Salix psammophila in the Mu Us Desert[D]. Beijing: Beijing Forestry University, 2016:23.
[19]
赵春彦,司建华,冯起,等.胡杨(Populus euphratica)蒸腾耗水对小降雨事件的响应[J].中国沙漠,2017,37(5):942. ZHAO Chunyan, SI Jianhua, FANG Qi, et al.Responses of transpiration of Populus euphratica to small rainfall events in desert riparian forest[J]. Journal of Desert Research, 2017, 37(5):942.
[20]
CHEN Zuosinan, ZHANG Ziqiang, SUN Ge, et al. Biophysical controls on nocturnal sap flow in plantation forests in a semi-arid region of northern China.[J]. Agricultural and Forest Meteorology, 2020, 284,107904.
[21]
臧春鑫,杨劼,袁劼,等.黄土丘陵沟壑区中间锦鸡儿整株丛树干液流特征与环境因子的关系[J].生态学杂志,2010,29(3):420. ZHANG Chunxin, YANG Jie, YUAN Jie, et al. Relationships between whole plant sap flux characteristics of Caragana inteimedia and environmental factors in loess hill-gully region[J]. Chinese Journal of Ecology, 2010, 29(3):420.