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首页> 外文期刊>Lakes & Reservoirs >Simple model for monitoring Balkhash Lake water levels and Ili River discharges: Application of remote sensing
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Simple model for monitoring Balkhash Lake water levels and Ili River discharges: Application of remote sensing

机译：监测巴尔喀什湖水位和伊犁河流量的简单模型：遥感的应用

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Balkhash Lake and its environs are a very fragile ecosystem, whose dynamics exhibits large oscillations in magnitude caused by climatic factors and human impacts. The most recent oscillation was accompanied by construction of a water storage reservoir on the Ili River, the main inflow to the lake, leading to an additional decrease in the Balkhash Lake water level, and to dehydration of wetland landscapes in the Ili River delta. The main purpose of this study was to model the link between wetland biomass conditions in the Ili River delta and changes in the Balkhash Lake water level. A monthly, coarse-resolution Normalized Difference Vegetation Index (NDVI) dataset was used as an indicator of vegetation activity and biomass dynamics in the Ili River delta wetland for the period between 1982 and 2003. The NDVI displays significant intra-annual and interannual variability strongly correlated with Ili River discharge and Balkhash Lake water level. This study also developed a simple model between NDVI and the two hydrological variables used in monitoring the hydrological regime of Balkhash Lake and its catchment basin.
机译：巴尔喀什湖及其周围地区是一个非常脆弱的生态系统，其动态表现出由气候因素和人类影响引起的震级变化。最近的振荡伴随着在伊犁河上的蓄水水库的建设，这是该湖的主要流入水，导致巴尔哈什湖水位进一步下降，并导致伊犁河三角洲的湿地景观脱水。这项研究的主要目的是模拟伊犁河三角洲湿地生物量条件与巴尔喀什湖水位变化之间的联系。使用月度粗分辨率归一化植被指数（NDVI）数据集作为1982年至2003年期间伊犁河三角洲湿地植被活动和生物量动态的指标。NDVI强烈显示出明显的年内和年际变化。与伊犁河流量和巴尔喀什湖水位相关。这项研究还建立了NDVI与两个水文变量之间的简单模型，这两个变量用于监测Balkhash湖及其集水盆地的水文状况。

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