北部湾典型入海流域植被CUE时空变化特征及驱动力因素分析

doi:10.13474/j.cnki.11-2246.2023.0222

测绘通报 ›› 2023, Vol. 0 ›› Issue (8): 1-6.doi: 10.13474/j.cnki.11-2246.2023.0222

• 生态环境动态监测 • 下一篇

北部湾典型入海流域植被CUE时空变化特征及驱动力因素分析

张亚丽^1,2, 梁晓燕², 田义超^1,2,3, 林俊良², 王栋华⁴

1. 北部湾大学北部湾海洋发展研究中心, 广西钦州 535011;
2. 北部湾大学资源与环境学院, 广西钦州 535011;
3. 北部湾海洋地理信息资源开发利用重点实验室, 广西钦州 535011;
4. 桂林理工大学环境科学与工程学院, 广西桂林 541004

收稿日期:2022-09-29 修回日期:2023-06-05 发布日期:2023-09-01
通讯作者: 田义超。E-mail:tianyichao1314@yeah.net
作者简介:张亚丽(1987-),女,硕士,讲师,研究方向为入海流域区域生态环境保护。E-mail:zhangyali1100@hotmail.com
基金资助:
广西自然科学基金联合资助培育项目(2018JJA150135)；北部湾海洋发展研究中心开放基金(BHZKY2205)；广西创新驱动发展专项(AA18118038)；广西高校中青年教师科研基础能力提升项目(2021KY0431；2022KY0412)

Analysis of temporal and spatial variation characteristics and driving factors of vegetation CUE in typical basin entering the sea in Beibu Gulf

ZHANG Yali^1,2, LIANG Xiaoyan², TIAN Yichao^1,2,3, LIN Junliang², WANG Donghua⁴

1. Beibu Gulf Marine Development Research Center, Beibu Gulf University, Qinzhou 535011, China;
2. School of Resources and Environment, Beibu Gulf University, Qinzhou 535011, China;
3. Key Laboratory of Marine Geographic Information Resources Development and Utilization in the Beibu Gulf, Beibu Gulf University, Qinzhou 535011, China;
4. Guilin University of Technology, Guilin 541004, China

Received:2022-09-29 Revised:2023-06-05 Published:2023-09-01

摘要/Abstract

摘要： 植被碳利用效率(CUE)反映了植被生态系统在碳储存方面的效率,对于"双碳"政策背景下植被碳循环研究具有重要参考价值。本文基于MODIS数据、气象数据、DEM数据,采用趋势分析、变异系数、Hurst指数等方法,对北部湾典型入海流域2001-2020年植被CUE时空变化特征展开了研究。结果表明: ① 时间上,CUE年均值呈显著下降趋势(P<0.01),年际变化率均值为-0.003/a;年际CUE波动程度较小,整体上较为稳定。② 空间上,北部湾典型入海流域CUE多年均值介于0.08~0.60之间,流域整体平均值为0.465。CUE年均值从高到低依次为,北仑河流域、钦江流域、江平江流域、防城江流域、茅岭江流流域、南流江流域、大风江流。③ 驱动力因素上,气温对北部湾典型入海流域植被CUE变化起主要控制作用,其次为高程和降水,土壤类型、坡度对植被CUE的驱动有限。

关键词: 植被碳利用效率, 植被初级生产力, 气候响应, 驱动力因素

Abstract: Vegetation carbon use efficiency (CUE), which reflects the efficiency of vegetation ecosystem in carbon storage, is of important reference value for the research of vegetation carbon cycle under the background of "dual carbon" policy. Based on the MODIS data, meteorological data and DEM data, the trend analysis, coefficient of variation and other methods are used to investigate the termporal and spatial variation characteristics of vegetation CUE in the Beibu Gulf watershed over the 2001-2020 periods. As shown by the results: ① In terms of time, the average annual CUE presents a significant downward trend (P<0.01), with a downward slope of -0.003/a. The interannual CUE fluctuates slightly and is relatively stable. ② Spatially, the average CUE of the typical basin into the sea of the Beibu Gulf ranges from 0.08 to 0.60, with an overall average value of 0.465. The average annual CUE, in descending order, are Beilun River Basin (0.492), Qinjiang River Basin (0.487), Jiangping River Basin (0.483), Fangcheng River Basin (0.477), Maoling River Basin (0.474), Nanliu River Basin (0.458), Dafeng River Basin (0.450). ③ From the perspective of driving factors, the average temperature plays a major role in controlling the change of vegetation CUE in the Beibu Gulf Basin, followed by elevation and rainfall. Soil type and slope have limited driving force on vegetation CUE.

Key words: vegetation carbon use efficiency, primary productivity of vegetation, climate response, coefficient of variation

中图分类号:

P237

张亚丽, 梁晓燕, 田义超, 林俊良, 王栋华. 北部湾典型入海流域植被CUE时空变化特征及驱动力因素分析[J]. 测绘通报, 2023, 0(8): 1-6.

ZHANG Yali, LIANG Xiaoyan, TIAN Yichao, LIN Junliang, WANG Donghua. Analysis of temporal and spatial variation characteristics and driving factors of vegetation CUE in typical basin entering the sea in Beibu Gulf[J]. Bulletin of Surveying and Mapping, 2023, 0(8): 1-6.

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北部湾典型入海流域植被CUE时空变化特征及驱动力因素分析

Analysis of temporal and spatial variation characteristics and driving factors of vegetation CUE in typical basin entering the sea in Beibu Gulf

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