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植被生态需水量
相关语句
  ecological water requirement of vegetation
     Study on Ecological Water Requirement of Vegetation in Jinghe Watershed
     泾河流域植被生态需水量研究
短句来源
     Method for Estimating Ecological Water Requirement of Vegetation
     植被生态需水量计算方法综述
短句来源
     Ecological water requirement for region means the minimal water demand for supporting the integrality ecological system in the region,which includes two parts of ecological water requirement of vegetation and water area.
     区域生态需水量指在一定区域,支撑生态系统完整性所需要的水量,由植被生态需水量和水域生态需水量两部分组成。
短句来源
  “植被生态需水量”译为未确定词的双语例句
     Method for estimating ecological water requirement of natural vegetation in arid area
     干旱区天然植被生态需水量计算方法
短句来源
     Ecological Water Demand of Vegetation Based on Eco-hydrological Processes in the Lower Reaches of Tarim River
     基于生态水文过程的塔里木河下游植被生态需水量研究
短句来源
     Calculation of Ecological Water Requirement of Forests in Jinghe Watershed
     森林植被生态需水量的确定和计算——以泾河流域为例
短句来源
     Ecological water requirements of vegetation in the middle reaches of Heihe River
     黑河中游地区植被生态需水量估算
短句来源
     based on this relation model, proposes a quantitative method of ecological water requirement (EWR) of natural vegetation in arid area, which utilizes the results of RS technique and the spot testing data of vegetative physiology demand.
     基于此关系模型,利用遥感技术成果以及植物生理需水的现场实验数据,提出了干旱区天然植被生态需水量计算方法。
短句来源
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  相似匹配句对
     Method for Estimating Ecological Water Requirement of Vegetation
     植被生态需水量计算方法综述
短句来源
     Ecology,Vegetation and Spring
     生态·植被·泉水
短句来源
     Ecological water requirements of vegetation in the middle reaches of Heihe River
     黑河中游地区植被生态需水量估算
短句来源
     Study on Ecological Water Requirement of Vegetation in Jinghe Watershed
     泾河流域植被生态需水量研究
短句来源
     Method for estimating ecological water requirement of natural vegetation in arid area
     干旱区天然植被生态需水量计算方法
短句来源
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The ecological evolution process was analyzed with RS data, and a quantitative method of determining ecological water requirement of natural stand in arid lower reach of Heihe River was developed, by utilizing RS technique and data to divide the area into many different ecological blocks, and based on spot-tested data of vegetative physiology water demand. The ecological water requirement of natural stand in lower reach of Heihe River was calculated with the method and introduced and analyzed in this paper.

依据遥感资料分析了黑河下游天然植被生态变化 ,提出了依据由生态适宜性理论建立的植物生长与地下水位关系模型 ,结合遥感技术进行的生态分区和植物生理需水的现场实验数据的天然生态需水量计算方法 ,计算了黑河流域下游额济纳旗天然植被生态需水量 ,得出了合理的结论。

According to the ecological appropriate theory, the logarithm normal distribution model between the growth of natural vegetation and the depth of groundwater was established Based on the model, the quantitative method for ecological water requirement of natural vegetation in arid area is proposed, byusing the  remote sensing technique to divide the area in the light of different ecological vegetation and the spot tested data of vegetative physiology demand  As an example, the ecological water requirement...

According to the ecological appropriate theory, the logarithm normal distribution model between the growth of natural vegetation and the depth of groundwater was established Based on the model, the quantitative method for ecological water requirement of natural vegetation in arid area is proposed, byusing the  remote sensing technique to divide the area in the light of different ecological vegetation and the spot tested data of vegetative physiology demand  As an example, the ecological water requirement of natural vegetation in Heihe River basin is computed Compared with the other related researches, the result is rational The method is reasonable and can be used in other arid area

依据生态适宜性理论,建立了植物生长与地下水位关系的对数正态分布模型;基于此模型,结合遥感技术进行的生态分区和植物生理需水的现场实验数据,提出了干旱区天然植被生态需水量计算方法;应用此方法计算了黑河流域额济纳旗天然植被生态需水量,计算成果与其他成果比较相差较小。结果表明,该计算方法是合理的,可以推广应用于干旱区其他地区。

In order to reduce the environmental and ecological problems induced by water resources management and use, this paper proposes a concept of ecological water requirements (EWR). It is defined as three grades for EWR, including critical EWR, optimal EWR and saturation EWR. Critical EWR are the water regimes needed to maintain vegetation growth at a low level of risk. Optimal EWR are the water regimes needed to maintain ecological function of vegetation at a continuable level. Saturation EWR are water regimes...

In order to reduce the environmental and ecological problems induced by water resources management and use, this paper proposes a concept of ecological water requirements (EWR). It is defined as three grades for EWR, including critical EWR, optimal EWR and saturation EWR. Critical EWR are the water regimes needed to maintain vegetation growth at a low level of risk. Optimal EWR are the water regimes needed to maintain ecological function of vegetation at a continuable level. Saturation EWR are water regimes needed to maintain maximum throughput of vegetation community. Based on the definition, the method for calculating the amount of ecological water requirements is determined, which is that auording to the theory of relationship water amount balance,using meteorological data of each county from 1956 to 2000, monitoring data of soil moisture in the different vegetation areas from 2002 to 2003,and 3S technique including geographical information system (GIS), global position system (GPS) and remote sensing (RS) to calculate ecological water requirements and analyze ecological water shortage. In this study in the middle reaches of Heihe River, the water requirements is divided into three parts, including arbor forest, shrub forest and herbage community. The results of calculation show that the Critical ecological water requirements in the middle reaches of Heihe River are 5.78×10~8m~3\5a~(-1), optimal ecological water requirement is (9.48×10~8~)11.58×10~8 m~3·a~(-1) and saturation ecological water requirements are 30.33×10~8~37.08×10~8 m~3·a~(-1), available precipitation of corresponding ecological areas is 4.74×10~8 m~3·a~(-1). The arbor forest, shrub forest and herbage community water requirements account for 33%, 35% and 32% of the amount of total ecological water requirements, respectively. Except Shandan and Minle County, the precipitation of other counties could not provide critical ecological water requirements. Furthermore, in the course of water resource adjusting, it is necessary that not only to consider spatial heterogeneity but also pay attention to season variability of ecological water requirements. This paper shows that ecological water shortages of April, May and June are the most serious in the middle reaches of Heihe River.

以水量平衡关系为理论基础,引用195 6~2 0 0 0年黑河中游地区各县的气象资料和2 0 0 2年4月~2 0 0 3年10月不同类型植被区的土壤水分动态监测数据,并采用GIS技术进行生态分区的基础上估算该地区的植被生态需水量,分析生态需水量的时空变化以及缺水量。结果表明:黑河中游地区每年最适生态需水量在9.4 8×10 8~11.5 8×10 8m3之间,除去相应植被区域上的有效降水量4 .74×10 8m3,还需要从径流中补给4 .74×10 8~6 .84×10 8m3。除山丹和民乐县外,其它各县的降水量均不能满足临界生态需水量。若以最适生态需水量为标准,山丹县的缺水量最大,占整个中游地区缺水量的4 0 .9%。另外,在水资源配置方案中,不仅要考虑空间上的差异,而且更要注意生态需水量在时间上的变化。分析表明,黑河中游地区的生态需水量的亏缺主要发生在4~6月份

 
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