四湖流域LUCC對生態(tài)水文過程的影響
發(fā)布時間：2018-08-05 15:55
【摘要】：隨著社會經(jīng)濟條件的迅速發(fā)展、人口的增加以及人類活動的復(fù)雜影響,城市化過程、不同的耕作方式等對水文過程的影響越來越明顯。LUCC對區(qū)域水文過程的影響逐漸成為目前水文學(xué)最具活力的熱點領(lǐng)域。 本文以湖北省境內(nèi)的四湖流域為研究范圍,在RS/GIS技術(shù)支持下,分析四湖流域的氣候變化特征、降雨徑流過程、土地利用/覆被變化特征,研究LUCC對流域產(chǎn)水量的影響。四湖流域產(chǎn)匯流過程最顯著地特點,是受到人工修筑的水利工程設(shè)施的強烈調(diào)控和限制。流域內(nèi)的降雨徑流過程是自然和人為因素共同作用的產(chǎn)物,呈現(xiàn)一種非自然的狀態(tài)。因此,本文從不同地表土地利用類型組合狀況對降雨引起的產(chǎn)流過程的差異角度,來探討地區(qū)小流域尺度的水文循環(huán)過程,以便為調(diào)節(jié)四湖流域水管理提供一定的理論指導(dǎo)。 對20年來四湖流域氣候變化的特征進行分析后,本文認為,四湖地區(qū)年降雨量季節(jié)分配很不均勻,極易造成暴雨洪澇災(zāi)害。同時流域內(nèi)不同地區(qū)受暴雨影響的頻度也不相同。通過對1990年,2000年,2010年三期遙感影像的解譯分析,發(fā)現(xiàn)四湖流域不同地類呈現(xiàn)不同的變動趨勢。其中旱地和水田面積二十年間有升有降,但總體變動幅度不大。水域面積不斷擴大,建設(shè)用地面積顯著增加,而未利用地等其他用地類型面積大幅下降。 為了分析四湖流域不同時期土地利用變化對流域產(chǎn)水量的影響,本文對1998年5-9月的強降雨進行計算,得出相同雨型在不同年份土地利用方式下的產(chǎn)水量。2000年的流域產(chǎn)水總量比1990年少0.68×108m3；2010年的流域總產(chǎn)水量比2000年多2.64×108m3,總體上流域的產(chǎn)水量是呈增加的趨勢。結(jié)果同時顯示,流域水域和建設(shè)用地的產(chǎn)水量在增加,而耕地的產(chǎn)水量下降。這主要是由于建設(shè)用地面積的增加和四湖流域養(yǎng)殖業(yè)的發(fā)展擴大了坑塘面積所致。
[Abstract]:With the rapid development of social and economic conditions, the increase of population and the complex influence of human activities, the process of urbanization, The influence of different farming methods on hydrological process is becoming more and more obvious. Lucc has gradually become the most active hot field in hydrology. In this paper, with the support of RS/GIS technology, the characteristics of climate change, rainfall runoff and land use / cover change in four lake basins in Hubei Province were analyzed, and the effects of LUCC on water production were studied. The most obvious characteristics of the process of runoff production and confluence in the four lakes basin are strongly regulated and restricted by the constructed water conservancy facilities. The rainfall-runoff process in the basin is the result of the interaction of natural and human factors, which presents an unnatural state. Therefore, from the point of view of the difference between different land use types and the runoff production process caused by rainfall, this paper discusses the hydrological cycle process on the scale of small watershed in order to provide some theoretical guidance for regulating the water management of the four lakes watershed. After analyzing the characteristics of climate change in the four lakes basin in the past 20 years, it is concluded that the seasonal distribution of annual rainfall in the four lakes area is very uneven and it is easy to cause torrential rain and waterlogging disasters. At the same time, the frequency of rainstorm in different areas of the basin is also different. Based on the interpretation and analysis of three remote sensing images in 1990, 2000 and 2010, it is found that different land types in the four lakes basin show different changing trends. Among them, dry land and paddy field area have increased and decreased in 20 years, but the overall change range is not big. The area of water area is expanding, the area of construction land is increasing significantly, while the area of other land types such as unused land has decreased significantly. In order to analyze the effect of land use change on water production in the four lakes watershed in different periods, the heavy rainfall in May-September 1998 was calculated in this paper. The total water production in 2000 was 0.68 脳 10 ~ 8m ~ 3 less than that in 1990, and 2.64 脳 10 ~ 8m ~ 3 more in 2010 than in 2000. The results also show that the water production of watershed and construction land is increasing, while that of cultivated land is decreasing. This is mainly due to the increase of construction land area and the expansion of pit area by the development of aquaculture in the four lakes basin.
【學(xué)位授予單位】：華中師范大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：P343.9
本文編號：2166268
[Abstract]:With the rapid development of social and economic conditions, the increase of population and the complex influence of human activities, the process of urbanization, The influence of different farming methods on hydrological process is becoming more and more obvious. Lucc has gradually become the most active hot field in hydrology. In this paper, with the support of RS/GIS technology, the characteristics of climate change, rainfall runoff and land use / cover change in four lake basins in Hubei Province were analyzed, and the effects of LUCC on water production were studied. The most obvious characteristics of the process of runoff production and confluence in the four lakes basin are strongly regulated and restricted by the constructed water conservancy facilities. The rainfall-runoff process in the basin is the result of the interaction of natural and human factors, which presents an unnatural state. Therefore, from the point of view of the difference between different land use types and the runoff production process caused by rainfall, this paper discusses the hydrological cycle process on the scale of small watershed in order to provide some theoretical guidance for regulating the water management of the four lakes watershed. After analyzing the characteristics of climate change in the four lakes basin in the past 20 years, it is concluded that the seasonal distribution of annual rainfall in the four lakes area is very uneven and it is easy to cause torrential rain and waterlogging disasters. At the same time, the frequency of rainstorm in different areas of the basin is also different. Based on the interpretation and analysis of three remote sensing images in 1990, 2000 and 2010, it is found that different land types in the four lakes basin show different changing trends. Among them, dry land and paddy field area have increased and decreased in 20 years, but the overall change range is not big. The area of water area is expanding, the area of construction land is increasing significantly, while the area of other land types such as unused land has decreased significantly. In order to analyze the effect of land use change on water production in the four lakes watershed in different periods, the heavy rainfall in May-September 1998 was calculated in this paper. The total water production in 2000 was 0.68 脳 10 ~ 8m ~ 3 less than that in 1990, and 2.64 脳 10 ~ 8m ~ 3 more in 2010 than in 2000. The results also show that the water production of watershed and construction land is increasing, while that of cultivated land is decreasing. This is mainly due to the increase of construction land area and the expansion of pit area by the development of aquaculture in the four lakes basin.
【學(xué)位授予單位】：華中師范大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：P343.9
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