欢迎访问《应用生态学报》官方网站,今天是 分享到:

应用生态学报 ›› 2022, Vol. 33 ›› Issue (6): 1533-1538.doi: 10.13287/j.1001-9332.202206.025

• 研究论文 • 上一篇    下一篇

2000—2020年青藏高原植被净初级生产力时空变化及其气候驱动作用

刘杰1,2, 汲玉河2*, 周广胜2, 周莉2, 吕晓敏2, 周梦子2   

  1. 1郑州大学地球科学与技术学院, 郑州 450001;
    2中国气象科学研究院与郑州大学生态气象联合实验室, 郑州 450001
  • 收稿日期:2021-08-16 接受日期:2022-03-24 出版日期:2022-06-15 发布日期:2022-12-15
  • 通讯作者: *E-mail: jiyh@cma.gov.cn
  • 作者简介:刘 杰, 男, 1996年生, 硕士研究生。主要从事中国森林固碳研究。E-mail: liu1789451061@163.com
  • 基金资助:
    第二次青藏高原综合科学考察研究项目(2019QZKK0106)资助。

Temporal and spatial variations of net primary productivity (NPP) and its climate driving effect in the Qinghai-Tibet Plateau, China from 2000 to 2020

LIU Jie1,2, JI Yu-he2*, ZHOU Guang-sheng2, ZHOU Li2, LYU Xiao-min2, ZHOU Meng-zi2   

  1. 1School of Geo-Science and Technology, Zhengzhou University, Zhengzhou 450001, China;
    2Joint Laboratory of Eco-Meteorology, Chinese Academy of Meteorological Sciences and Zhengzhou University, Zhengzhou 450001, China
  • Received:2021-08-16 Accepted:2022-03-24 Online:2022-06-15 Published:2022-12-15

摘要: 青藏高原是我国乃至全世界的“气候变化实验室”,在气候变化驱动下,青藏高原植被净初级生产力(NPP)发生了显著变化。本研究利用归一化植被指数、数字高程、年降水量和年气温等数据,探究2000—2020年青藏高原植被NPP的时空变化特征及其与气候因子的关系。结果表明: 2000—2020年,青藏高原植被NPP呈显著增加趋势,NPP增加速率为1.67 g C·m-2·a-1。青藏高原植被NPP空间分布表现为从东南向西北逐渐递减,该分布格局与气温、降水量的空间分布格局基本吻合。植被NPP与气温和降水量变化显著正相关。暖湿化气候变化趋势是促进植被NPP显著增加的重要动力,如果气候持续更暖更湿,青藏高原植被NPP将会持续增加。

关键词: 净初级生产力, 气候变化, 驱动机制, 青藏高原

Abstract: Qinghai-Tibet Plateau is a “climate change laboratory” for China and the world. Driven by climate change, net primary productivity (NPP) in the Qinghai-Tibet Plateau has significant variations. Using the data of normalized difference vegetation index, digital elevation, annual precipitation, and annual temperature, we explored the temporal and spatial variation characteristics of NPP and its correlation with climate factors on the Qinghai Tibet Plateau from 2000 to 2020. The results showed that NPP of the Qinghai-Tibet Plateau increased significantly from 2000 to 2020, with an increase rate of 1.67 g C·m-2·a-1. The NPP was significantly positively correlated with temperature and precipitation. The climate trend of warming and wetting was an important driving force to promote the significant increase of NPP. The increases of NPP would continue if the climate become warmer and wetter.

Key words: net primary productivity, climate change, driving mechanism, Qinghai-Tibet Plateau