【摘要】：本研究針對東北地區(qū)降雨集中、耕層養(yǎng)分含量高、土壤凍融作用強烈、氮磷流失嚴重特點，通過東北地區(qū)農業(yè)面源污染形勢宏觀分析、區(qū)域農業(yè)面源污染特征分析等大量基礎研究選取阿什河流域作為東北地區(qū)農業(yè)面源污染的典型區(qū)域，構建了流域農業(yè)面源污染控制模擬優(yōu)化系統(tǒng)，進行小流域農業(yè)面源模擬與優(yōu)化，并借助軟件平臺實現了該系統(tǒng)的功能與應用。 首先結合東北地區(qū)的土地利用現狀、農業(yè)生產特點以及水文氣象特征等方面對農業(yè)面源污染形勢進行了宏觀分析，黑龍江省作為我國的最重要的糧食生產基地，農業(yè)污染源數量居全國第一。為更深入地分析東北地區(qū)農業(yè)面源污染的形勢和特征，從農業(yè)土地利用狀況的診斷入手利用輸出負荷模型，對典型農區(qū)哈爾濱地區(qū)農業(yè)面源污染總氮和總磷負荷進行了估算和污染特征分析。該地區(qū)作為松花江流域的典型規(guī)模集約化農區(qū)，農業(yè)面源污染負荷輸出量呈逐年上升趨勢；總氮年輸出負荷遠高于總磷年輸出負荷，是主要的農業(yè)面源污染物質；農業(yè)土地利用是農業(yè)面源污染最大的影響因素，，農業(yè)種植用地是該地區(qū)農業(yè)面源污染最主要的來源，其中又以玉米種植用地貢獻率最大。由此表明，規(guī)模集約化的農業(yè)種植，種植模式單一，為追求產量盲目大量施用化肥是農業(yè)面源污染的主要原因。畜禽養(yǎng)殖的第二大農業(yè)面源污染來源；由農村居民生活帶來的面源污染也不容忽視。 為進一步剖析流域農業(yè)土地利用與水環(huán)境的相互作用機理，提出污染控制優(yōu)化策略，本研究選擇阿什河流域作為研究區(qū)域，建立基于全流域的農業(yè)面源污染控制模擬與優(yōu)化系統(tǒng)。在大量收集數據和實地監(jiān)測的基礎上，針對流域農業(yè)面源污染負荷模型對基礎數據信息的需求，建立農業(yè)面源污染基礎信息管理系統(tǒng)。將流域內農業(yè)面源污染產生及各影響因素與流域出口負荷總量建立響應聯(lián)系。將改善農業(yè)管理措施的成果量化輸入模擬與優(yōu)化系統(tǒng)，評估優(yōu)化效果，為制定農業(yè)面源污染負荷削減優(yōu)化方案提供依據。為了使整個模擬與優(yōu)化過程更為精確和簡易快捷，本研究將整個數據管理系統(tǒng)、面源污染模擬和優(yōu)化過程通過計算機軟件實現。通過流域農業(yè)面源污染的模擬與優(yōu)化系統(tǒng)對農業(yè)面源污染削減措施的評估，從而得出了針對該流域農業(yè)面源污染更為有效的控制優(yōu)化方案，實現了從總體上減少農業(yè)面源污染量的目標，為流域農業(yè)面源污染控制提供決策支持。模擬與優(yōu)化結果表明：改善化肥配施比、增施有機肥以及平衡玉米和大豆的種植結構是有效控制該流域農業(yè)面源污染的優(yōu)化策略。
[Abstract]:In view of the characteristics of concentrated rainfall, high nutrient content, strong freezing and thawing of soil and serious loss of nitrogen and phosphorus in Northeast China, the situation of agricultural non-point source pollution in Northeast China was analyzed macroscopically. A large number of basic studies, such as analysis of the characteristics of agricultural non-point source pollution in regional agriculture, selected the Ashe River basin as the typical area of agricultural non-point source pollution in Northeast China, and constructed a simulation and optimization system for agricultural non-point source pollution control in the basin. The function and application of the system are realized by means of the software platform for the simulation and optimization of agricultural non-point source in small watershed. Firstly, considering the present situation of land use, the characteristics of agricultural production and the characteristics of hydrology and meteorology in Northeast China, the situation of agricultural non-point source pollution is analyzed macroscopically. Heilongjiang Province is the most important food production base in China. The number of agricultural pollution sources ranks first in the country. In order to analyze the situation and characteristics of agricultural non-point source pollution in Northeast China, the output load model is used from the diagnosis of agricultural land use condition. The total nitrogen and total phosphorus load of agricultural non-point source pollution in Harbin were estimated and the pollution characteristics were analyzed. As a typical intensive agricultural area of Songhua River basin, the output of agricultural non-point source pollution load is increasing year by year, the annual output load of total nitrogen is much higher than the annual output load of total phosphorus, and it is the main agricultural non-point source pollution material. Agricultural land use is the biggest influencing factor of agricultural non-point source pollution. Agricultural planting land is the most important source of agricultural non-point source pollution in this area. It is concluded that the main reason of agricultural non-point source pollution is intensive agricultural planting on a large scale with a single planting pattern and blind and mass application of chemical fertilizer in pursuit of yield. The second largest agricultural non-point source of pollution in livestock and poultry farming, and the non-point source pollution brought by rural residents can not be ignored. In order to further analyze the interaction mechanism between agricultural land use and water environment, and put forward the optimal pollution control strategy, the Ashe River Basin was selected as the study area. An agricultural non-point source pollution control simulation and optimization system based on the whole basin was established. Based on a large amount of data collection and field monitoring, a basic information management system for agricultural non-point source pollution was established in accordance with the demand of basic data information for agricultural non-point source pollution load model in watershed. The response of agricultural non-point source pollution and its influencing factors to the total export load of the basin was established. The results of improving agricultural management measures are quantified into the simulation and optimization system to evaluate the optimization effect and provide the basis for formulating the optimization scheme of agricultural non-point source pollution load reduction. In order to make the whole simulation and optimization process more accurate and convenient, the whole data management system, non-point source pollution simulation and optimization process are realized by computer software. Through the evaluation of agricultural non-point source pollution reduction measures through the simulation and optimization system of agricultural non-point source pollution in watershed, a more effective control and optimization scheme for agricultural non-point source pollution in this basin is obtained. The goal of reducing the amount of agricultural non-point source pollution is achieved, which provides decision support for agricultural non-point source pollution control in watershed. The results of simulation and optimization showed that the optimization strategy of controlling agricultural non-point source pollution in the watershed was to improve the chemical fertilizer ratio, increase the application of organic fertilizer and balance the planting structure of maize and soybean.
【學位授予單位】：北京理工大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：X71

【參考文獻】

相關期刊論文 前5條

1 畢雪;王曉媛;;基于輸出系數模型的洞庭湖流域面源污染分析[J];人民長江;2012年11期

2 蔡明,李懷恩,莊詠濤,王清華;改進的輸出系數法在流域非點源污染負荷估算中的應用[J];水利學報;2004年07期

3 薛利紅;楊林章;;面源污染物輸出系數模型的研究進展[J];生態(tài)學雜志;2009年04期

4 賀瑞敏,張建云,陸桂華;我國非點源污染研究進展與發(fā)展趨勢[J];水文;2005年04期

5 苑韶峰,呂軍;流域農業(yè)非點源污染研究概況[J];土壤通報;2004年04期

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