干旱区生态环境知识资源中心(Arid): 甘肃省民勤县天然植被生态需水研究

Arid

	甘肃省民勤县天然植被生态需水研究
其他题名	Study on ecological water requirement for natural vegetation in Minqin County of Gansu Province
	郝博; 粟晓玲; 马孝义
来源期刊	西北农林科技大学学报. 自然科学版
ISSN	1671-9387
出版年	2010
卷号	38 期号:2 页码:158-164
中文摘要	[目的]研究干旱地区天然植被的生态需水量,为区域生态用水与经济用水的合理配置提供参考.[方法]针对西北干旱地区水资源短缺、降雨量少、植被退化、盖度降低等现状,以甘肃省民勤县为例,采用联合国粮农组织(FAO)提出的干旱区受破坏非完全覆盖的天然植被生态需水计算方法,计算植被生态需水定额,扣除有效降雨后得到生态缺水定额,再结合遥感解译的不同类型植被的生态植被面积,获得植被生态需水量和生态缺水量.[结果]民勤县植被适宜和最小的生态需水量在枯水年分别为7 652.0万和4 045.3万m~3,平水年分别为7 554.9万和3 994.0万m~3,丰水年分别为6 546.3万和3 460.8万m~3.植被适宜和最小的生态缺水量在枯水年分别为6 040.3万和2 433.7万m~3,平水年分别为5 714.6万和2 153.8万m~3,丰水年分别为4 220.4万和1 331.4万m~3.[结论]利用FAO提出的生态需水计算方法可以得到植被生长期各月生态需水量,计算结果与利用热脉冲法所得结果差异较小,说明该方法计算结果可靠,可以推广应用于其他干旱区.
英文摘要	[Objective]The purpose of studying natural vegetation ecological water (EWR) is to pro-vide reference for rational allocation of water between regional ecological and economic water usage in arid area. [Method]Considering the characters of the water shortage,little precipitation,degenerating vegeta-tion and low coverage in northwest arid area of China,a new method of EWR for non-pristine、non-full cov-erage natural vegetation was introduced,which was proposed by FAO. The method was used to calculate the quota of EWR for vegetation. And the quota of water shortage for vegetation was obtained after deduc-ting the effective precipitation. Combining with the different types of vegetation area interpreted from re-mote sensing,the volumes of EWR and water shortage for vegetation were obtained. Minqin County of Gansu Province was taken as an example in this study. [Result]The optimal EWR and the mimmum EWR for vegetation in Minqin County in dry year was 76 520 000 and 40 453 000 m~3 respectively,in average year75 549 000 and 39 940 000 m~3 respectively,in wet year 65 463 000 and 34 608 000 m~3 respectively. The wa-ter shortage of optimal EWR and the minimum EWR for vegetation in dry year was 60 403 000 and 24 337 000 m~3 respectively, in average year 57 146 000 and 21 538 000 m~3 respectively, in wet year 42 204 000 and 13 314 000 m~3 respectively. [Conclusion]Monthly EWR can be obtained by the calculating method of EWR, which was proposed by FAO. Comparing the results with measured results by Heat pulse sap flow sensors,the difference is smaller. So the method is reliable and can be extended to other arid are-as.
中文关键词	天然植被生态需水 ; 干旱区 ; 水资源利用与配置 ; 民勤县
英文关键词	ecological water requirement (EWR) for natural vegetation arid area water use and config-uration Minqin County
类型	Article
语种	中文
国家	中国
收录类别	CSCD
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:3845263
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/225759
作者单位	郝博, 西北农林科技大学水利与建筑工程学院, 杨凌, 陕西 712100, 中国.; 粟晓玲, 西北农林科技大学水利与建筑工程学院, 杨凌, 陕西 712100, 中国.; 马孝义, 西北农林科技大学水利与建筑工程学院, 杨凌, 陕西 712100, 中国.
推荐引用方式 GB/T 7714	郝博,粟晓玲,马孝义. 甘肃省民勤县天然植被生态需水研究[J]. 西北农林科技大学,2010,38(2):158-164.
APA	郝博,粟晓玲,&马孝义.(2010).甘肃省民勤县天然植被生态需水研究.西北农林科技大学学报. 自然科学版,38(2),158-164.
MLA	郝博,et al."甘肃省民勤县天然植被生态需水研究".西北农林科技大学学报. 自然科学版 38.2(2010):158-164.