The influence of rapid urbanization and land use changes on terrestrial carbon sources/sinks in Guangzhou, China
The influence of rapid urbanization and land use changes on terrestrial carbon sources/sinks in Guangzhou, China
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快速城市化和土地利用变化对中国广州陆地碳源/汇的影响
DOI：
10.1016/j.ecolind.2016.05.052
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发表时间：
2016-11
影响因子：
6.9
通讯作者：
Qiu Lin-Run
中科院分区：
文献类型：
--
作者：
Xua Qian;Yang Ren;Dong Yu-Xiang;Liu Yan-Xu;Qiu Lin-Run
快速城市化引起的碳源和碳汇的复杂变化，导致土地利用类型的数量、结构和空间格局发生了广泛的变化。基于修正的Buckie-Ames-斯坦福大学方法模型，采用灰色关联分析方法，分析了2000 - 2012年广州市土地利用变化对碳汇和排放的影响。其目的是为建设用地扩张确定适当的选择，以使碳损失最小化。主要研究结果如下：（1）广州市建设用地在研究期内增长了118.91%，以越秀区为中心呈同心圆状扩展。(2)分析期间的碳排放量大大超过碳汇能力。碳汇总量由535.40 × 103 t减少到374.6 × 103 t，减少了30.02%。碳排放总量增长了1.89倍，从13.73 × 106 t增加到39.67 × 106 t，其中80%的碳排放来自能源消费。(3)不同尺度的建设用地扩张和土地利用变化导致的碳汇损失程度存在较大差异。在广州，耕地（虽然不是基本农田）和水体小规模转化为建设用地时，碳汇损失较小。当草原大规模转化为建设用地时，碳汇的损失要小得多。然而，具有良好碳汇功能的林地不应被转换。(4)碳汇的变化主要受自然因素和土地城市化的影响。碳排放变化主要受人口城市化、经济城市化和土地城市化的影响。(5)为实现“节约集约用地”，政府土地利用管理政策应确定“城市增长边界”和“生态红线”。这些因素对城市生态系统“增碳汇、减碳”具有重要意义。
Complex changes in carbon sources and sinks caused by rapid urbanization have been observed with extensive changes in the quantity, structure, and spatial pattern of land use types. Based on the modified Carnegie-Ames-Stanford Approach model and on gray relational analysis, we analyzed the influence of land use changes on carbon sinks and emissions in Guangzhou from 2000 to 2012. The aim was to identify suitable options for built-up land expansion that would allow for minimal carbon losses. The key results were as follows: (1) Built-up land increased by 118.91% in Guangzhou city over the study period, with this expansion taking the form of concentric circles extending around the old Yuexiu district. (2) Carbon emissions over the period of analysis significantly exceeded carbon sink capabilities. The total carbon sink decreased by 30.02%, from 535.40 × 103t to 374.6 × 103t. Total carbon emissions increased by 1.89 times, from 13.73 × 106t to 39.67 × 106t; 80% of carbon emissions were derived from energy consumption. (3) There were large differences in the extent of carbon sink losses at different scales of built-up land expansion and land use change. In Guangzhou, the loss of carbon sink is small when cultivated land (though not prime farmland) and water bodies are converted to built-up land on a small scale. The loss of carbon sink is much smaller when grasslands are converted to built-up land on a large scale. However, forested land, which has excellent carbon sink functions, should not be converted. (4) Changes in carbon sinks were mainly affected by natural factors and land urbanization. Changes in carbon emissions were mainly affected by population urbanization, economic urbanization, and land urbanization. (5) To achieve “economical and intensive use of land”, “urban growth boundary” and “ecological red lines” should be determined for government policies on land use management. These factors have great significance for “increasing carbon sinks and reducing carbon emissions” in urban ecological systems.
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中国景观城市化和经济增长：积极的反馈和可持续性困境。
影响因子：
11.4
作者：
Bai, Xuemei;Chen, Jing;Shi, Peijun
通讯作者：
Shi, Peijun
DOI：
10.1177/107049659700600404
发表时间：
1997-12
期刊：
The Journal of Environment & Development
影响因子：
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作者：
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通讯作者：
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影响因子：
6.5
作者：
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通讯作者：
Alicia Morugán-Coronado;F. García‐Orenes;J. Mataix‐Solera;V. Arcenegui;J. Mataix‐Beneyto
影响因子：
11.7
作者：
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通讯作者：
Sunak, Yasin
影响因子：
6.9
作者：
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通讯作者：
Marchettini, Nadia