生态环境学报 ›› 2026, Vol. 35 ›› Issue (2): 209-222.DOI: 10.16258/j.cnki.1674-5906.2026.02.005
收稿日期:2025-02-19
修回日期:2025-11-12
接受日期:2025-11-19
出版日期:2026-02-18
发布日期:2026-02-09
通讯作者:
丁雪
作者简介:余燕鞠(2002年生),女,硕士研究生,主要研究方向为土地利用模拟与碳储量估算。E-mail: 1690728905@qq.com
基金资助:
YU Yanju1,2,3(
), DING Xue1,2,3,*(
)
Received:2025-02-19
Revised:2025-11-12
Accepted:2025-11-19
Online:2026-02-18
Published:2026-02-09
摘要:
揭示滇中城市群森林生态系统的碳汇动态及其环境响应机制,可为区域森林资源的可持续管理提供重要的理论依据。基于MOD17A3H V6 NPP数据、MCD12Q1 V6土地覆盖类型数据、ERA5气象数据和SRTMGL1_003高程数据等多源遥感数据,结合Hurst指数和偏导数残差法等多元统计方法,系统地研究了2000-2020年滇中城市群森林净初级生产力(NPP)的时空变化特征及其影响因素。研究结果表明,1)2000-2020年,滇中城市群森林总面积为1.77×104 km2,其中阔叶林、针叶林和混交林分别为0.34×104 km2、0.70×104 km2和0.73×104 km2。2)森林NPP总量年均增长C 2.01 Tg∙a−1(增幅60.5%),混交林的年均增速最高(C 1.71 Tg∙a−1),其次为针叶林(C 1.66 Tg∙a−1)和阔叶林(C 0.80 Tg∙a−1)。3)55.8%的区域森林NPP呈增加趋势,6.86%的区域为极显著和显著增加,44.2%的区域呈减少趋势,2.10%的区域显著减少。4)78.0%的区域Hurst指数<0.5,预示未来NPP将呈现逐步减少。5)地形影响显著,NPP在2100-2400 m达峰值,随坡度增加而降低,南坡向NPP最高。6)人类活动贡献率达99.3%,是NPP改善的主导因素(占33.7%),而气候变化和人类活动的共同作用则是导致NPP退化的主要原因(占30.6%)。研究结果可为该区域森林碳循环研究和森林资源可持续管理提供科学参考。
中图分类号:
余燕鞠, 丁雪. 滇中城市群森林植被净初级生产力时空变化特征及其影响因素研究[J]. 生态环境学报, 2026, 35(2): 209-222.
YU Yanju, DING Xue. Study on the Spatiotemporal Patterns and Driving Factors of Forest Vegetation Net Primary Productivity in the Central Yunnan Urban Agglomeration[J]. Ecology and Environmental Sciences, 2026, 35(2): 209-222.
| 数据类型 | 数据名称 | 空间分辨率 | 数据来源 |
|---|---|---|---|
| 森林净初级生产力 | MOD17A3H V6 | 500 m | NASA( |
| 森林类型 | MCD12Q1 V6 | 500 m | |
| 降水 | ERA5 | 0.1° | ECMWF( |
| 气温 | 0.1° | ||
| 高程 | USGS/SRTMGL1_003 | 30 m | 中科院地理空间数据云平台( |
| 坡度 | 30 m | ||
| 坡向 | 30 m | ||
| 气象站点数据 | NOAA( |
表1 数据来源
Table1 Data resources
| 数据类型 | 数据名称 | 空间分辨率 | 数据来源 |
|---|---|---|---|
| 森林净初级生产力 | MOD17A3H V6 | 500 m | NASA( |
| 森林类型 | MCD12Q1 V6 | 500 m | |
| 降水 | ERA5 | 0.1° | ECMWF( |
| 气温 | 0.1° | ||
| 高程 | USGS/SRTMGL1_003 | 30 m | 中科院地理空间数据云平台( |
| 坡度 | 30 m | ||
| 坡向 | 30 m | ||
| 气象站点数据 | NOAA( |
| N | Z | 变化趋势 |
|---|---|---|
| N>0 | 2.58<Z | 极显著增加 |
| 1.96<Z≤2.58 | 显著增加 | |
| 1.65<Z≤1.96 | 微显著增加 | |
| 0<Z≤1.65 | 不显著增加 | |
| N=0 | Z=0 | 无变化 |
| N<0 | −1.65≤Z<0 | 不显著减少 |
| −1.96≤Z<−1.65 | 微显著减少 | |
| −2.58≤Z<−1.96 | 显著减少 | |
| Z<−2.58 | 极显著减少 |
表2 Theil-Sen Median趋势分析变化趋势划分表
Table 2 Classification of theil-sen median trend analysis change trend
| N | Z | 变化趋势 |
|---|---|---|
| N>0 | 2.58<Z | 极显著增加 |
| 1.96<Z≤2.58 | 显著增加 | |
| 1.65<Z≤1.96 | 微显著增加 | |
| 0<Z≤1.65 | 不显著增加 | |
| N=0 | Z=0 | 无变化 |
| N<0 | −1.65≤Z<0 | 不显著减少 |
| −1.96≤Z<−1.65 | 微显著减少 | |
| −2.58≤Z<−1.96 | 显著减少 | |
| Z<−2.58 | 极显著减少 |
| 情景 | N | C | H | 气候变化 相对作用 | 人类活动 相对作用 | 说明 |
|---|---|---|---|---|---|---|
| 植被改善 | >0 | >0 | >0 | Kc | Kh | 气候变化和人类活动 共同促进植被恢复 |
| >0 | <0 | 100 | 0 | 气候变化促进植被恢复 | ||
| <0 | >0 | 0 | 100 | 人类活动促进植被恢复 | ||
| 植被退化 | <0 | <0 | <0 | Kc | Kh | 气候变化和人类活动 共同促使植被退化 |
| <0 | >0 | 100 | 0 | 气候变化促使植被退化 | ||
| >0 | <0 | 0 | 100 | 人类活动促使植被退化 |
表3 气候变化和人类活动对滇中城市群森林NPP变化影响的情景
Table 3 Different scenarios of contributions of climate change and human activities on forest NPP changes
| 情景 | N | C | H | 气候变化 相对作用 | 人类活动 相对作用 | 说明 |
|---|---|---|---|---|---|---|
| 植被改善 | >0 | >0 | >0 | Kc | Kh | 气候变化和人类活动 共同促进植被恢复 |
| >0 | <0 | 100 | 0 | 气候变化促进植被恢复 | ||
| <0 | >0 | 0 | 100 | 人类活动促进植被恢复 | ||
| 植被退化 | <0 | <0 | <0 | Kc | Kh | 气候变化和人类活动 共同促使植被退化 |
| <0 | >0 | 100 | 0 | 气候变化促使植被退化 | ||
| >0 | <0 | 0 | 100 | 人类活动促使植被退化 |
图3 滇中城市群森林植被净初级生产力(NPP)年总量变化
Figure 3 Variation in the annual total net primary productivity (NPP) of forest in the Central Yunnan Urban Agglomeration
图11 滇中城市群2000-2020年平均气温和累计降水量年际变化
Figure 11 Variation of annual average temperature and cumulative precipitation in the Central Yunnan Urban Agglomeration
图13 滇中城市群气候因子和人类活动对NPP变化的贡献
Figure 13 The contributions of climatic factors and human activities to the changes in NPP in the Central Yunnan Urban Agglomeration
图14 滇中城市群气候变化和人类活动对NPP变化的相对贡献率
Figure 14 The contribution proportions of climate changes and human activities to forest NPP in the Central Yunnan Urban Agglomeration
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