基于二元水循环的黄淮海平原耕地水源涵养功能研究  

Study on the water conservation function of cultivated land based on dualistic water cycle in Huang-Huai-Hai Plain

作　　者：陈丽[1,2] 郝晋珉[1,2] 陈爱琪 李牧[1,2] 高阳[1,2] 管青春[1,2] 王宏亮[1,2,3] 

机构地区：[1]中国农业大学资源与环境学院,北京100193 [2]国土资源部农用地质量与监控重点实验室,北京100193 [3]呼和浩特市国土资源局,呼和浩特010010

出　　处：《生态学报》2017年第17期5871-5881,共11页Acta Ecologica Sinica

基　　金：国家科技支撑计划项目(2015BAD06B01)

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。Water conservation as an important ecosystem function has caused a rising interests in the scientific community in recent years. Huang-Huai-Hai Plain has a substantial cultivated land area and typical cultivated land-use patterns. So, the research on water conservation function of cultivated land in this area is important for regulating the regional water resources and promoting the sustainable utilization of cultivated land. We constructed a basic research framework of the water conservation function of cultivated land in Huang-Huai-Hai Plain, which based on the dualistic water cycle process of cultivated land use systems. The water conservation function and spatial distribution of cultivated land in the Huang-Huai-Hai Plain was evaluated with cultivated land cover data, climate data, and soil data, by using the Soil Conservation Service Curve Number（SCS-CN） model. The results suggested that the water conservation function of cultivated land should be identified by the ideal water conservation ability, effective water conservation ability, and net water conservation ability, which were 1890.74×108, 1127.76×108, and 464.62×108 m3, respectively, in Huang-Huai-Hai Plain in 2012. And the water retention function of cultivated land showed obvious spatial heterogeneity：It was strong in the northern and southeastern regions of the study area, but it was weak in the central and southwestern regions of the study area. This study provides a new perspective on research of the ecological function theory of cultivated land, and a reference and support for regulating water resources effectively and formulating ecological compensation of cultivated land.

关 键 词：水源涵养功能 二元水循环 耕地 黄淮海平原 

分 类 号：S181[农业科学—农业基础科学]