Evaluation of water conservation function in the Xiongan New Area based on the comprehensive index method
Evaluation of water conservation function in the Xiongan New Area based on the comprehensive index method
复制标题
基于综合指数法的雄安新区水源涵养功能评价
DOI：
10.1371/journal.pone.0238768
复制
发表时间：
2020-09-10
期刊：
影响因子：
3.7
通讯作者：
Yang, Yuqing
中科院分区：
文献类型：
--
作者：
Chen, Yanling;Gong, Adu;Yang, Yuqing
水资源涵养是生态系统的一项重要服务功能。及时认识水资源涵养功能的动态变化，对水资源的保护与重建具有重要意义。基于遥感数据、气象数据、土地覆被数据和中华人民共和国环境保护部《生态系统状况评价技术规范》，设计了2005 - 2015年雄安新区水资源涵保功能综合评价体系。该系统从生态结构、生态压力、水平衡和景观生态四个方面构建。结果表明：2005 - 2015年雄安新区节水功能呈现先降低后增加的趋势，总体呈上升趋势；增加的区域主要集中在白洋淀周围和草地附近。在所有评价指标中，降水遵从率指数波动最大，从2010年的-16.62到2015年的6.70。蒸散指数在2010年最大（6.47），2005年最小（3.52）。温度植被干旱指数（TVDI）显示，2010年旱情最严重，2015年最轻。然而，其他指标保持相对稳定。从空间分布上看，雄安新区的节水功能由北向南逐渐增强。
Water conservation is an important service function of ecosystems. A timely understanding of dynamic changes in the water conservation function is important for the protection and reconstruction of water resources. Based on remote sensing data, meteorological data, land cover data, and the "Technical Criterion for Ecosystem Status Evaluation" issued by the Ministry of Environmental Protection of the People's Republic of China, a comprehensive evaluation system was designed to assess the water conservation function of the Xiongan New Area from 2005 to 2015. The system created from four aspects, including ecological structure, ecological stress, water balance and landscape ecology. The results showed that from 2005 to 2015, the water conservation function of the Xiongan New Area first decreased and then increased, and the overall trend was upward. The increasing areas were mainly concentrated around Baiyangdian and near the grassland. Among all evaluated indicators, the precipitation compliance rate index fluctuated the most from -16.62 in 2010 to 6.70 in 2015. The evapotranspiration index was the largest in 2010 (6.47) and the smallest in 2005 (3.52). The Temperature Vegetation Dryness Index (TVDI) showed that the drought was the severest in 2010 and the least severe in 2015. However, the other indicators remain relatively stable. From the perspective of the spatial distribution, the water conservation function of the Xiongan New Area was gradually enhanced from north to south.