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| 西部绿洲城市土地利用转型的生态环境效应——以乌鲁木齐市为例 |
| Eco-environmental effects of land use conversion in oasis city in western China: A case study of Urumqi |
| 投稿时间：2018-05-08 |
| DOI：10.13254/j.jare.2018.0113 |
| 中文关键词: 土地利用转型，生态服务价值，碳排放量，乌鲁木齐市 |
| 英文关键词: land use conversion, ecosystem service value, carbon emission, Urumqi |
| 基金项目:国家自然科学基金项目（71663051，71563052）；国家博士后基金项目（2017M623336XB）；新疆少数民族科技人才特殊培养计划科研项目（2017D03017） |
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| 中文摘要: |
| 为探讨土地利用转型对生态环境变化的影响，基于乌鲁木齐市2005年和2012年TM影像数据、土地利用现状矢量数据、中国高空间分辨率网格数据（CHRED），运用土地利用转型、生态系统单位面积生态服务价值评估和碳排放核算等方法，分析城市化过程中乌鲁木齐市土地利用转型前后生态环境变化效应。结果表明，研究区土地利用转型幅度较大，其中园林地、草地、城镇村及工矿用地和未利用地之间的转换较明显，未利用地转出面积最大（10.33万hm2），说明研究区土地开发程度较高。研究区生态服务价值均呈增加趋势，研究期间生态服务价值增加了89 227.32万元，其中，园林地、草地和水域土地利用转型对生态系统服务价值增加的贡献高。研究区土地利用碳排放量呈上升趋势，碳排放量较高的是城镇村及工矿用地。研究区内土地利用转型后净生态系统服务价值呈现增加趋势，但土地碳排放量变化速度远超生态系统服务价值增加速度，因此在乌鲁木齐市低碳城市建设中，要充分考虑土地利用结构调整与生态环境保护的平衡关系。 |
| 英文摘要: |
| The paper used TM image data, land use vector data, and China's high spatial resolution grid data(CHRED) of Urumqi's center area in 2005 and 2012, and studied the change of Urumqi's ecosystem and environment with the conversion of land use. The method of land use conversion, ecosystem service value assessment and carbon emission accounting were employed in this study. Results showed that land use conversion was significant, among which the land conversions of garden land, grassland, urban village, industrial and mining land and unused land were more obvious. The unused land showed the greatest change(1.033×105 hm2) which indicated that the degree of land development in the study area was higher. With the conversion of land use, the value of ecosystem services showed an increasing trend. The net EVS value rose by 892.273 2 million yuan. The land conversion of garden land, grassland and water area contributed most to the increase of ecosystem service value. There was an uptrend in the carbon emission intensity of land use. The highest carbon emissions were induced by urban villages and industrial and mining land. Although the net ecosystem service value of the land use conversion was increasing, the change of land carbon emission intensity was more quickly than the change of the ecosystem service value. Therefore, the balance between the adjustment of land use structure and the protection of the ecological environment should be considered by the government in the low-carbon construction of Urumqi. |
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