首页|Isolating the direct and indirect impacts of urbanization on vegetation carbon sequestration capacity in a large oasis city:evidence from Urumqi, China

Isolating the direct and indirect impacts of urbanization on vegetation carbon sequestration capacity in a large oasis city:evidence from Urumqi, China

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Oasis cities are deeply affected by human activities in arid and semi-arid regions. Vegetation is an important repository in the carbon cycle of oasis urban ecosystems. The continuous expansion of urban has a disproportionate impact on the carbon sequestration capacity of vegetation. Till now, studies have been conducted to quantify the impact of urbanization on vegetation carbon sequestration capacity, the mechanism of such impact remains unclear and lacks systematic investigations, especially in oasis urban. Understanding the impact mechan-ism greatly benefits the sustainable development of oasis urban and regional carbon neutrality. To fill this knowledge gap, we design a theoretical framework to analyze the impact of urbanization on vegetation carbon sequestration capacity by isolating the direct and indirect impacts in Urumqi, China. Some results based on Landsat images indicated that the Impervious Surface Areas (ISAs) expanded by 436.98 km2 during 2000–2019. The Net Primary Productivity (NPP) calculated using the Vegetation Photosynthesis Model (VPM) was directly caused by the loss of 51.45 Gg C (1 Gg=109 g). Another important finding proved that the direct carbon loss caused by urbanization did not change the upward trend of the total carbon sequestration capacity of vegetation, but only slowed down this upward trend by 20.86％. Our results provide new insights into urban vegetation carbon sinks and contribute to a better understanding of the uncertainty of urbanization toward carbon neutrality. This study will provide scientific data support and suggestions for the sustainable development of oasis cities and the regional carbon budget.

Oasisurbanizationvegetationcarbon neutralitynet primary productivity (NPP)

Qingwei Zhuang、Zhenfeng Shao、Deren Li、Xiao Huang、Orhan Altan、Shixin Wu、Yuzhen Li

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State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan, China

Department of Geosciences, University of Arkansas, Fayetteville, AD, USA

Department of Geomatics Engineering, Istanbul Technical University, Istanbul, Turkey

State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, China

School of Emergency Management, Xihua University, Chengdu, China

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国家自然科学基金国家自然科学基金国家自然科学基金国家重点研发计划special research and 5G project of Jiangxi Province in ChinaZhuhai industry university research cooperation project of ChinaNatural Science Foundation of Sichuan

4209001241771452417714542018YFB050540120212ABC03A09ZH22017001210098PWC2022NSFCSC1124

2023

10.1080/10095020.2022.2118624

地球空间信息科学学报(英文版)
武汉大学（原武汉测绘科技大学）

地球空间信息科学学报(英文版)

CSCD
影响因子：0.207
ISSN：1009-5020
年,卷(期)：2023.26(3)
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