基于多方法的沼泽湿地草本植被物候变化研究  

Phenological Changes of Herbaceous Vegetation in Marsh Wetland based on Multiple Methods

作　　者：谭博文 单元琪 谭霄鹏 姚允龙[1,4] Bowen TAN;Yuanqi SHAN;Xiaopeng TAN;Yunlong YAO(College of Wildlife and Nature Reserves,Northeast Forestry University,Harbin 150000,China;Harbin Center for Integrated Natural Resources Survey,China Geological Survey,Harbin 150086,China;Observation and Research Station of Earth Critical Zone in Black Soil,Harbin,Ministry of Natural Resources,Harbin 150086,Heilongjiang,China;Wetland Biodiversity Conservation and Research Center,Northeast Forestry University,Harbin 150000,China)

机构地区：[1]东北林业大学野生动物与自然保护地学院,黑龙江哈尔滨150000 [2]中国地质调查局哈尔滨自然资源综合调查中心,黑龙江哈尔滨150086 [3]自然资源部哈尔滨黑土地地球关键带野外科学观测站,黑龙江哈尔滨150086 [4]东北林业大学湿地生物多样性保护与研究中心,黑龙江哈尔滨150000

出　　处：《遥感技术与应用》2024年第5期1205-1212,共8页Remote Sensing Technology and Application

基　　金：国家自然科学基金面上项目“寒地城市森林水平与垂直结构季相变异的冷岛机制研究”(42171246);国家重点开发项目“多尺度沼泽湿地生态网络完整性提升技术”(2022YFF1300903-03);黑龙江省重点研发计划指导类项目“城市绿色景观结构降温敏感性与景观福祉优化技术研究”(GZ20210193);中央高校基金(2572021BE04)。

摘　　要：植被物候提取方法及物候趋势监测是准确反映植被生长状态的关键环节。基于中等空间分辨率成像光谱仪(MODIS)的归一化植被指数(Normalized Difference Vegetation Index,NDVI)、增强型植被指数(Enhanced Vegetation Index,EVI)产品,提取了三江平原典型沼泽湿地草本植物的12个物候参数,通过Pearson相关性分析、Mann-Kendall突变检验、Mann-Kendall趋势检验、方差分析等方法,探究不同属沼泽植物的物候提取值差异及其变化特征与趋势,揭示了陆地表面物候与物候观测值的差异。结果表明:(1)Gu方法是三江沼泽湿地植物物候曲线拟合方法中最合适的,EVI数据提取的地面物候参数优于NDVI数据。(2) TRS1方法在提取春季物候参数(Start Of Season,SOS)上更为准确,Klosterman方法在提取秋季物候参数(End of Season,EOS)上更为准确。(3)最佳方法下薹草属SOS提前趋势为0.63 d/a,甜茅属EOS提前趋势为0.49 d/a。研究结果可为三江平原湿地植被保护性研究以及适应未来气候变化等方面提供借鉴。Vegetation phenology extraction methods and phenological trend monitoring are the key links to accurately reflect the growth status of vegetation.Based on the Normalized Difference Vegetation Index(NDVI)and Enhanced Vegetation Index(EVI)products of Medium Spatial Resolution Imaging Spectroscopy(MODIS),12 phenological parameters of herbaceous plants in typical swamp wetlands in the Sanjiang Plain were extracted.Mann-Kendall mutation test,Mann-Kendall trend test,analysis of variance and other methods were used to explore the differences in phenological extraction values and their change characteristics and trends of different genera of swamp plants,and revealed the differences between land surface phenology and phenological observations.The results showed that:(1)The Gu method was the most suitable method for fitting plant phenological curves in Sanjiang swamp wetland,and the ground phenological parameters extracted from EVI data were better than those of NDVI data.(2)The TRS1 method was more accurate in extracting the spring phenological parameters(Start Of Season)(SOS),and the Klosterman method was more accurate in extracting the autumn phenological parameters(End of Season)(EOS).(3)Under the optimal method,the advance trend of SOS was 0.63 Day/Year,and the advance trend of EOS was 0.49 Day/Year.The results of this study can provide reference for the conservation of wetland vegetation in the Sanjiang Plain and the adaptation to future climate change.

关 键 词：phenofit包 三江平原 生长曲线拟合 物候提取方法 物候趋势 

分 类 号：TQ948[化学工程] TP79[自动化与计算机技术—检测技术与自动化装置]