农业工程学报2012，Vol.28Issue(6)：156-161,6.DOI:10.3969/j.issn.1002-6819.2012.06.026
基于生态功能分区的陕北延河流域旱地系统生态需水测评
Evaluation to ecological water requirement of dry land system based on ecological function zones in Yanhe watershed
摘要
Abstract
In this research, by taking dry land system of Yanhe watershed as an example, we selected the index with ecology and hydrology meaning and applied the RS, GIS and GPS technologies to establish the ecological function zones. At the same time, we assessed and analyzed the ecological water requirement and its distribution characteristics at the scales of vegetation-soil landscapes and ecological function zones. The results showed that Yanhe watershed could be divided into five ecological zones, which were sand fixation zone, drought defense zone, land and water maintenance zone, farmland planting zone and vegetation protection zone, respectively. The ecological water requirement of forest-cohesive loam was the most amount with 502.31 mm/a; while that of grassland-sandy loam was the least amount with 300.01 mm/a. The ecological water requirement of vegetation protection zone was the most amount with 357.72 mm/a; while that of drought defense zone was the least amount with 304.73 mm/a. This research offers scientific references for optimal allocation and sustainable utilization of land-water resources, and it is significant for ecosystem management.关键词
功能分析/生态/水分/植被/生态功能分区/旱地系统/生态需水/延河流域Key words
functional analysis/ ecology/ water/ vegetation/ ecological function zones/ dry land system/ ecological water requirement/ Yanhe watershed分类
资源环境引用本文复制引用
王丽霞,任朝霞,任志远,马超群..基于生态功能分区的陕北延河流域旱地系统生态需水测评[J].农业工程学报,2012,28(6):156-161,6.基金项目
国家自然科学基金项目(41001374) （41001374）
国家自然科学基金项目(41040011) （41040011）
国家自然科学基金项目(31140042) （31140042）
