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| 黄土丘陵区刺槐生长季生态需水研究 | |
| 引用本文： | 陈天林,徐学选,张北赢,何萍.黄土丘陵区刺槐生长季生态需水研究[J].水土保持通报,2008,28(2):54-57. |
| 作者姓名： | 陈天林 徐学选 张北赢 何萍 |
| 作者单位： | 1. 西北农林科技大学,资源环境学院,陕西,杨凌,712100 2. 西北农林科技大学,资源环境学院,陕西,杨凌,712100;中国科学院,水利部,水土保持研究所,陕西,杨凌,712100 3. 中国科学院,水利部,水土保持研究所,陕西,杨凌,712100 4. 安塞县农业经济管理站,陕西,安塞,717400 |
| 基金项目： | 国家科技支撑计划 , 中国科学院"百人计划" |
| 摘 要： | 刺槐林的生态需水量可以理解为该林地的蒸散耗水量,受大气环境、植被生长状况与生长特性、土壤水分条件的综合影响.林木暂时凋萎含水量和生长阻滞含水量分别是能保证林木基本生存和正常生长时土壤含水量的下限,因此,相应的刺槐林地耗水量分别为平均最小生态需水量和平均适宜生态需水量,其数值通过计算林地的潜在蒸散量并利用土壤水分修正系数和林木系数进行订正获得.经计算,黄土丘陵区燕沟流域刺槐幼年林生长季(5-10月)的最小生态需水量为420.3 mm,适宜生态需水量为506.7 mm;刺槐青年林的最小生态需水量为602.4 mm,适宜生态需水量为730.4 mm. |
| 关 键 词： | 刺槐 生态需水 潜在耗水量 黄土丘陵区 黄土丘陵区 刺槐林地 生长季 最小生态需水量 研究 Loess Hilly Region Water Requirement 青年 幼年 燕沟流域 订正 土壤水分修正系数 利用 潜在蒸散量 计算 数值 和平 耗水量 下限 土壤含水量 |
| 文章编号： | 1000-288X(2008)02-0054-04 |
| 收稿时间： | 2007/12/4 0:00:00 |
| 修稿时间： | 2007年12月4日 |
Ecological Water Requirement of Robinia Perseudoacacia in Loess Hilly Region |
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| CHEN Tian-lin,XU Xue-xuan,ZHANG Bei-ying and HE Ping.Ecological Water Requirement of Robinia Perseudoacacia in Loess Hilly Region[J].Bulletin of Soil and Water Conservation,2008,28(2):54-57. | |
| Authors: | CHEN Tian-lin XU Xue-xuan ZHANG Bei-ying and HE Ping |
| Institution: | College of Resources and Environment,Northwest Agriculture and Forestrey University,Yangling,Shaanxi 712100,China;Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources,Yangling,Shaanxi 712100,China;Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources,Yangling,Shaanxi 712100,China;Agr-economy Management Work-station of Ansai County,Ansai,Shaanxi 717400,China |
| Abstract: | The ecological water requirement of Robinia perseudoacacia can be expressed by the evapotranspiration of trees in growing season.It can be influenced by weather,vegetation,and soil moisture.If soil moisture is above temporary-wilt or growth-retard,tree growth can be sustained,basically or normally.Therefore,soil water contents for temporary-wilt and growth-retard can be taken as the minimum ecological water requirement and the suitable ecological water requirement of Robinia perseudoacacia,respectively.They can be estimated by introducing soil factor and tree species factor to potential evapotranspiration with Penman formula.Accordingly,the ecological water requirement(May to Oct.) for Robinia perseudoacacia in Yangou watershed is estimated.The minimum and suitable ecological water requirements of childhood Robinia perseudoacacia are 420.3 and 506.7 mm,respectively.The minimum and suitable ecological water requirements of young Robinia perseudoacacia are 602.4 and 730.4 mm,respectively. |
| Keywords: | Robinia perseudoacacia ecological water requirement potential evapotranspiration loess hilly region |
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