人类活动和自然因素对海流兔河流域生态环境影响分析

Effects of human activities and natural factors on ecological environment of the Hailiutu river basin

为了分析研究海流兔河流域生态环境变化以及人为因素和自然因素在区域中各自影响,文中通过计算实际的NPP和潜在的NPP的方法来分离人为因素和自然因素各自所占比例。结果表明:1)研究区多年来植被生态环境呈现出良性的发展;2)在时空变化中,人为因素占到影响区域的85.9%,是该区域生态环境良性发展的主要推动力;3)在区域空间变化中,人类活动影响较大的区域主要集中分布在河床谷地以及湖盆滩地地区,自然因素影响较大的区域主要集中分布在沙丘沙地以及流域分水岭和河岸两边的沙梁地区。人为因素和自然因素共同促进了该区域的生态环境发展,人为因素是该区域生态环境良性发展的主要推动力。

In order to analyze the influence of human factors and natural factors on the ecological environment changes of Hailiutu river basin,the calculation of actual NPP and potential NPP were used to separate the proportion of human factors and natural factors. Results show that： 1） The vegetation presented a benign development over the years in the study area. 2） In the temporal and spatial variation,human factors accounted for 85.9% of the influencing factors that affected the area,and was the main driving force for the healthy development of ecological environment. 3） For the regional spatial change,the areas affected greater by human activities mainly concentrated in the river valley and lake beach areas; where affected greatly by natural factors mainly distributed in sand dunes,sandy land,watershed and sand beam area on both sides of the river bank. The contributions to the development of the region ＇s ecological environment were human factors and natural factors; human factors were the main driving force for the healthy development of the region＇s ecological environment.