洮儿河流域地下水TDS时空变异特征研究

分别在2 0 0 3年枯水期与丰水期对洮儿河流域平原区潜水系统进行取样分析,运用空间变异函数和克立格插值法对潜水总溶解固体(TDS)时空变异特征分析,研究结果表明:(1)潜水TDS季节变化不明显,而且呈现明显的分带性;(2 )TDS空间变程较大,主要受区域水文地质条件、地形地貌、土壤类型等大尺度因子影响;(2 )局部地区潜水TDS出现异常,已受外界盐分污染。

洮儿河流域农业水生态环境研究

本文系统分析了吉林西部洮儿河流域的农业水生态环境特征，揭示了流域内影响农业可持续发展的五大农业水生态环境问题；按照地质、地貌、自然资源状况、生态环境灾害、环境质量等综合要素对流域进行了环境分区；最后论述了流域内农业水生态环境的演化过程和影响因素。

Study on the Non-point Source Pollution in the Upper and Middle Reaches of the Taoer River Basin

The Taoer River basin is the epitome in the west of Northeast China and it is one of the most fragile and sensitive ecoregions. Thus, protection of water quality of the Taoer River is important. Not only point source pollution but non-point source (NPS) pollution results in deteriorating water quality. In this study, long-term hydrologic impact assessment model was used to evaluate the impacts of land use change impacts on NPS pollution, and the replacement cost method was used to calculate the economic loss caused by NPS pollution. Through analyzing the NPS pollutant loads of different land categories and the economic loss, the article puts forward that there exists a close relationship between land-use types and NPS pollution, and agricultural pollution is the main component of the NPS pollution in this area. The results of this study can provide decision-making basis for agricultural development and land-use change.

1998年大洪水中察尔森水库发挥的重要作用

文章依据实测雨量及洪水资料 ,对 1998年洮儿河察尔森水库的暴雨、洪水成因、特点进行了分析 ,介绍了察尔森水库在 1998年大洪水中发挥的重要作用。

科尔沁草原上的无限“风光”

美丽的科尔沁大草原是我国四大草原之一，地处内蒙古东部，大兴安岭南坡，松辽平原西端。其宽从大兴安岭到松辽平原东半部，其长为内蒙古、辽宁、吉林、黑龙江四个省区交汇的狭长结合部，它包括大兴安岭南段东侧的西辽河、霍林河、洮儿河流域。