Ecological Water Requirement by Forest and Grass in Central and Southern Ningxia Hui Autonomous Region

LI Jin-yan; ZHANG Wei-jiang

doi:10.13961/j.cnki.stbctb.2014.02.057

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Ecological Water Requirement by Forest and Grass in Central and Southern Ningxia Hui Autonomous Region

- Ecological Water Requirement by Forest and Grass in Central and Southern Ningxia Hui Autonomous Region
- Bulletin of Soiland Water Conservation Vol. 33, Issue 2, Pages: 276-280(2014)
- 作者机构：
  
  1. 宁夏大学土木与水利工程学院,宁夏,银川,750021
  2. 宁夏节水灌溉与水资源调控工程技术研究中心,宁夏,银川,750021
  3. 旱区现代农业水资源高效利用教育部工程研究中心,宁夏,银川,750021
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2014.02.057
  CLC：
- Published：2014
- 稿件说明：
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LI Jin-yan, ZHANG Wei-jiang. Ecological Water Requirement by Forest and Grass in Central and Southern Ningxia Hui Autonomous Region[J]. Bulletin of Soiland Water Conservation, 2014, 33(2): 276-280.
DOI：

LI Jin-yan, ZHANG Wei-jiang. Ecological Water Requirement by Forest and Grass in Central and Southern Ningxia Hui Autonomous Region[J]. Bulletin of Soiland Water Conservation, 2014, 33(2): 276-280. DOI： 10.13961/j.cnki.stbctb.2014.02.057.

摘要

以宁夏地区中南部干旱区域气象资料、植被分布、水资源状况等为依据

估算了现有林、草地生长季的最小和适宜生态需水量

并对降雨消耗性及径流消耗性林草地生态需水量进行了降水资源平衡分析。研究结果表明:(1)位于南部山区、年均降雨量在350~550 mm之间的隆德和泾原县降雨消耗性林、草地最小和适宜生态需水量均能依靠降水得以满足

林草植被生长状况良好。(2)位于南部山区、年均降雨量在350 mm左右的彭阳县和原州区

降雨能够满足林、草地最小生态需水量的需求

而适宜生态需水量不能得到满足。因此

该区域要合理考虑林草地种植结构。(3)年均降雨量在175~280 mm

位于中部干旱带的海原、盐池和同心县以及南部山区的西吉县降雨消耗性林、草地最小和适宜生态需水量均不能得到满足。该区域不宜于大面积发展林草业。

Abstract

Using the meteorological data

vegetation distribution data

water resources data

we calculated the minimum and appropriate ecological water requirement of existent forest and grassland in growing season in the Central and Southern Ningxia Hui Autonomous Region. Through the analysis of equilibrium between the eco-environment water demand and rainfall resource

the results showed that in Longde County and Jingyuan County

which locate in the south area

with an average rainfall of 350~550 mm

the minimum and appropriate ecological water requirement both can be met by precipitation

and the vegetation grow well. In Pengyang County and Yuanzhou County

which locate in the south area

with an average annual rainfall of 350 mm or so

the minimum eco-water demand can be satisfied

but appropriate ecological water demand cannot be met. So reasonable grass planting structure should be considered in the area. In Haiyuan

Yanchi and Tongxin Counties in the central arid area and Xiji County in the south area

with an average annually rainfall between 175 and 280 mm

both minimum and appropriate ecological water demand can not be met

it is unreasonable to develop forest and grassland in this area.

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