基于二元水循环的黄淮海平原耕地水源涵养功能研究

发布时间：2018-01-30 19:28

本文关键词： 水源涵养功能二元水循环耕地黄淮海平原　出处：《生态学报》2017年17期 　论文类型：期刊论文

【摘要】：水源涵养功能是陆地生态系统的重要功能类型之一。黄淮海平原耕地数量巨大,耕地利用模式典型,研究其水源涵养功能,对于调控区域水资源,推动耕地可持续利用有重要作用。从耕地利用角度出发,基于整个系统二元水循环过程,构建了黄淮海平原耕地水源涵养功能研究基本框架,并应用SCS-CN模型,结合研究区耕地覆盖数据、气候数据、土壤数据对黄淮海平原耕地水源涵养功能进行了评价。研究结果表明:耕地利用过程中的耕地水源涵养功能认识,应从理想水源涵养能力、有效水源涵养能力和净水源涵养能力3个层次展开;黄淮海平原耕地水源涵养功能效应在上述各层级上均表现出正向性,耕地水源涵养能力分别为1890.74、1127.76、464.62亿m~3;空间上,黄淮海平原耕地水源涵养功能具有明显的空间分异性,北部和东南部地区耕地水源涵养能力较强,中部和西南部地区耕地水源涵养能力较弱。研究结果不仅为耕地生态功能理论研究提供新思考点,同时也为耕地水资源有效调控以及耕地生态补偿制定提供参考和支撑。
[Abstract]:Water conservation function is one of the important functional types of terrestrial ecosystem. There is a large amount of cultivated land in Huang-Huai-Hai plain, and the model of cultivated land utilization is typical. From the perspective of cultivated land use, based on the whole system of binary water cycle process, the basic framework of the study on the function of cultivated land water conservation in the Huang-Huai-Hai Plain is constructed. And using SCS-CN model, combined with cultivated land cover data, climate data. The function of cultivated land water conservation in Huang-Huai-Hai plain was evaluated by soil data. The results showed that the function of cultivated land water conservation in the process of cultivated land utilization should be recognized from the ideal water conservation capacity. The effective water conservation capacity and the clean water source conservation ability were carried out in three levels; The effect of water conservation function of cultivated land in Huang-Huai-Hai Plain is positive at the above levels. The water conservation capacity of cultivated land is 1890.74 ~ 1127.76 and forty-six billion four hundred and sixty-two million mm3 respectively. In space, the water conservation function of cultivated land in Huang-Huai-Hai plain has obvious spatial differentiation, and the water conservation capacity of cultivated land in the north and southeast areas is relatively strong. The water conservation capacity of cultivated land in the central and southwest regions is weak. The results not only provide a new thinking point for the theoretical study of cultivated land ecological function. At the same time, it also provides reference and support for effective regulation of cultivated land water resources and establishment of cultivated land ecological compensation.
【作者单位】：中国农业大学资源与环境学院;国土资源部农用地质量与监控重点实验室;呼和浩特市国土资源局;
【基金】：国家科技支撑计划项目(2015BAD06B01)
【分类号】：S181
【正文快照】： 水源涵养是生态系统重要生态服务类型之一[1-2]。随着全球水资源短缺、水环境恶化以及水土流失问题加剧,生态系统的水源涵养功能越来越引起公众关注[3-5]。耕地虽然是经过人工驯化,与人类关系密切的半自然生态系统,但它同森林、草地、湿地一样具有截留蓄水的生态服务功能。量

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