生态环境学报 ›› 2026, Vol. 35 ›› Issue (5): 691-701.DOI: 10.16258/j.cnki.1674-5906.2026.05.003
韦兆伟1(
), 章焕1,*(
), 陈锴来2, 虞历尧1, 姚静远1, 杨刚杰1, 罗昶1
收稿日期:2025-07-30
修回日期:2025-12-30
接受日期:2026-02-13
出版日期:2026-05-18
发布日期:2026-05-08
通讯作者:
*E-mail: 作者简介:韦兆伟(1998年生),男,助理工程师,硕士,主要从事气候变化与生态农业响应研究。E-mail: zw_6090@163.com
基金资助:
WEI Zhaowei1(
), ZHANG Huan1,*(
), CHEN Kailai2, YU Liyao1, YAO Jingyuan1, YANG Gangjie1, LUO Chang1
Received:2025-07-30
Revised:2025-12-30
Accepted:2026-02-13
Online:2026-05-18
Published:2026-05-08
摘要:
高温和干旱会影响植被固碳能力,探究其对植被碳利用率(carbon use efficiency,CUE)的影响对应对气候变化和实现碳中和目标具有重要意义。基于标准化温度指数(standardized temperature index,STI)和标准化降水蒸散发指数(standardized precipitation evapotranspiration index,SPEI)识别了浙江省2001-2022年夏季(6-8月)和秋季(9-11月)发生的高温和干旱事件,并计算了高温干旱复合指数(blended dry and hot events index,BDHI),同时基于MODIS数据研究了不同植被类型CUE对高温和干旱及其复合事件的响应特征。结果表明:研究时段内,浙江省高温过程以轻度炎热和中度炎热为主,干旱过程以中度干旱和轻度干旱为主。6-11月植被CUE多年均值分别为0.43、0.35、0.37、0.49、0.60和0.64,CUE低值(0-0.2)在7-8月分布最显著。夏季和秋季CUE标准化异常指数(ZCUE)与STI均呈显著负相关(r= −0.600和−0.620,p<0.01),其中农田7月ZCUE与STI负相关性最强(r= −0.735)。CUE对干旱响应具有季节差异,夏季呈不显著正相关(r=0.161,p>0.05),秋季呈显著负相关(r= −0.454,p<0.05),相同月份下不同植被类型CUE与SPEI偏相关系数无明显差异。高温干旱复合事件下,7月和8月ZCUE随BDHI强度增加降低更明显。95%置信区间内,各植被类型ZCUE与STI、SPEI和BDHI的最大相关系数均在当月。综上,植被CUE对高温响应更敏感且无滞后,强度升高会导致CUE下降;对干旱响应存在季节差异(夏季影响不显著,秋季抑制);相对于单因素,复合事件在夏季的主导作用更强,林地相对于草地和农田,其CUE变化对复合事件更敏感。
中图分类号:
韦兆伟, 章焕, 陈锴来, 虞历尧, 姚静远, 杨刚杰, 罗昶. 浙江省不同植被类型植被碳利用率(CUE)对高温和干旱的响应特征[J]. 生态环境学报, 2026, 35(5): 691-701.
WEI Zhaowei, ZHANG Huan, CHEN Kailai, YU Liyao, YAO Jingyuan, YANG Gangjie, LUO Chang. Response Characteristics of Carbon Use Efficiency (CUE) of Different Vegetation Types to High-temperature and Drought in Zhejiang Province[J]. Ecology and Environmental Sciences, 2026, 35(5): 691-701.
| STI | 高温等级 | SPEI | 干旱等级 |
|---|---|---|---|
| STI<0.5 | 正常 | SPEI≥−0.5 | 无旱 |
| 0.5≤STI<1.0 | 轻度炎热 | −1.0<SPEI≤−0.5 | 轻度干旱 |
| 1.0≤STI<1.5 | 中度炎热 | −1.5<SPEI≤−1.0 | 中度干旱 |
| 1.5≤STI<2.0 | 重度炎热 | −2.0<SPEI≤−1.5 | 重度干旱 |
| STI≥2.0 | 极端炎热 | SPEI≤−2.0 | 极端干旱 |
表1 STI和SPEI等级划分标准
Table 1 Classification standard of STI and SPEI
| STI | 高温等级 | SPEI | 干旱等级 |
|---|---|---|---|
| STI<0.5 | 正常 | SPEI≥−0.5 | 无旱 |
| 0.5≤STI<1.0 | 轻度炎热 | −1.0<SPEI≤−0.5 | 轻度干旱 |
| 1.0≤STI<1.5 | 中度炎热 | −1.5<SPEI≤−1.0 | 中度干旱 |
| 1.5≤STI<2.0 | 重度炎热 | −2.0<SPEI≤−1.5 | 重度干旱 |
| STI≥2.0 | 极端炎热 | SPEI≤−2.0 | 极端干旱 |
图5 不同植被类型CUE标准化异常指数(ZCUE)与STI-01的偏相关系数 *和**分别表示在0.05和0.01水平上,相关性显著。下同
Figure 5 The partial correlation coefficient between ZCUE and STI?01 in different vegetation types
| STI-01 | ZCUE滞后期 | |||||
|---|---|---|---|---|---|---|
| ZCUE-0 | ZCUE-1 | ZCUE-2 | ZCUE-3 | ZCUE-4 | ZCUE-5 | |
| 常绿针叶林 | −0.546** | −0.161 | −0.114 | −0.171 | −0.132 | −0.114 |
| 常绿阔叶林 | −0.509** | −0.170 | −0.106 | −0.151 | −0.129 | −0.084 |
| 混交林 | −0.532** | −0.159 | −0.112 | −0.165 | −0.127 | −0.106 |
| 草地 | −0.436** | −0.133 | −0.105 | −0.139 | −0.090 | −0.077 |
| 农田 | −0.500** | −0.140 | −0.104 | −0.131 | −0.117 | −0.092 |
表2 STI-01与滞后0-5个月ZCUE的CCF分析
Table 2 Cross-correlation function of STI?01 and standardized abnormalities in CUE with a lag of 0?5 months
| STI-01 | ZCUE滞后期 | |||||
|---|---|---|---|---|---|---|
| ZCUE-0 | ZCUE-1 | ZCUE-2 | ZCUE-3 | ZCUE-4 | ZCUE-5 | |
| 常绿针叶林 | −0.546** | −0.161 | −0.114 | −0.171 | −0.132 | −0.114 |
| 常绿阔叶林 | −0.509** | −0.170 | −0.106 | −0.151 | −0.129 | −0.084 |
| 混交林 | −0.532** | −0.159 | −0.112 | −0.165 | −0.127 | −0.106 |
| 草地 | −0.436** | −0.133 | −0.105 | −0.139 | −0.090 | −0.077 |
| 农田 | −0.500** | −0.140 | −0.104 | −0.131 | −0.117 | −0.092 |
| SPEI-01 | ZCUE滞后期 | |||||
|---|---|---|---|---|---|---|
| ZCUE-0 | ZCUE-1 | ZCUE-2 | ZCUE-3 | ZCUE-4 | ZCUE-5 | |
| 常绿针叶林 | −0.119 | −0.085 | −0.115 | 0.059 | 0.014 | −0.081 |
| 常绿阔叶林 | −0.158 | −0.043 | −0.127 | 0.053 | 0.000 | −0.085 |
| 混交林 | −0.179* | −0.067 | −0.100 | 0.066 | 0.000 | −0.112 |
| 草地 | −0.272** | −0.029 | −0.056 | 0.128 | 0.018 | −0.134 |
| 农田 | −0.210* | −0.030 | −0.002 | 0.155 | 0.055 | −0.117 |
表3 SPEI-01与滞后0-5个月ZCUE的CCF分析
Table 3 Cross-correlation function of SPEI?01 and standardized abnormalities in CUE with a lag of 0?5 months
| SPEI-01 | ZCUE滞后期 | |||||
|---|---|---|---|---|---|---|
| ZCUE-0 | ZCUE-1 | ZCUE-2 | ZCUE-3 | ZCUE-4 | ZCUE-5 | |
| 常绿针叶林 | −0.119 | −0.085 | −0.115 | 0.059 | 0.014 | −0.081 |
| 常绿阔叶林 | −0.158 | −0.043 | −0.127 | 0.053 | 0.000 | −0.085 |
| 混交林 | −0.179* | −0.067 | −0.100 | 0.066 | 0.000 | −0.112 |
| 草地 | −0.272** | −0.029 | −0.056 | 0.128 | 0.018 | −0.134 |
| 农田 | −0.210* | −0.030 | −0.002 | 0.155 | 0.055 | −0.117 |
| BDHI | ZCUE滞后期 | |||||
|---|---|---|---|---|---|---|
| ZCUE-0 | ZCUE-1 | ZCUE-2 | ZCUE-3 | ZCUE-4 | ZCUE-5 | |
| 常绿针叶林 | 0.203* | 0.029 | −0.004 | 0.095 | 0.025 | −0.032 |
| 常绿阔叶林 | 0.155 | 0.065 | −0.018 | 0.076 | 0.020 | −0.049 |
| 混交林 | 0.161 | 0.045 | 0.001 | 0.095 | 0.010 | −0.052 |
| 草地 | 0.059 | 0.056 | 0.024 | 0.129 | 0.000 | −0.080 |
| 农田 | 0.129 | 0.060 | 0.065 | 0.148 | 0.041 | −0.053 |
表4 BDHI与滞后0-5个月ZCUE的CCF分析
Table 4 Cross-correlation function of BDHI and standardized abnormalities in CUE with a lag of 0?5 months
| BDHI | ZCUE滞后期 | |||||
|---|---|---|---|---|---|---|
| ZCUE-0 | ZCUE-1 | ZCUE-2 | ZCUE-3 | ZCUE-4 | ZCUE-5 | |
| 常绿针叶林 | 0.203* | 0.029 | −0.004 | 0.095 | 0.025 | −0.032 |
| 常绿阔叶林 | 0.155 | 0.065 | −0.018 | 0.076 | 0.020 | −0.049 |
| 混交林 | 0.161 | 0.045 | 0.001 | 0.095 | 0.010 | −0.052 |
| 草地 | 0.059 | 0.056 | 0.024 | 0.129 | 0.000 | −0.080 |
| 农田 | 0.129 | 0.060 | 0.065 | 0.148 | 0.041 | −0.053 |
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