We find ourselves at the end of a national election season, one cycling through a particularly depressed economic situation, but Americans, a generally hopeful, forward looking lot have become accustomed to growing in...We find ourselves at the end of a national election season, one cycling through a particularly depressed economic situation, but Americans, a generally hopeful, forward looking lot have become accustomed to growing incivility and resentment in their politics. This resentment stems from what Albert Borgmann defines as the character of our late modern age--we are both sullen and hyper in our daily lives. This situation comes at the intersection of long developing modern elements stemming from the control of nature via a universal scientific method at the behest of our own aggressive pursuit of individuality. The nature of our lives are in turn reinforced and reproduced by our frenetic militarized mobilization to recapture political and economic leadership at an international level. This goal, spurred on by an elite oligarchical vanguard, is reinforced by a ＂wealth defense industry,＂ developed in the late 20th century, designed to protect the wealth of our own elite class. This industry has stripped traditional cultural and academic sites of their ability or interest in interrogating the present status quo, and has rendered them fiat, uninspiring, and indolent in the face of growing income inequities and injustice. American political science has essentially become, in the vein of Marita Sturken＇s work, kitschified--facile, glib, and easily reproduced so as to act as a balm to our bruised, sullen egos, longing for an age of innocence-a smooth and glassy yet opaque history that eases our consciences and forgives the growing antidemocratic practices of our civil oligarchy.展开更多
Larch caterpillar (Dendrolimus superans) is very common in the Da Hinggan Mountains, Northeast China, affecting fire regime and forest ecosystem change at large spatio-temporal scales. In this study, we used a spatial...Larch caterpillar (Dendrolimus superans) is very common in the Da Hinggan Mountains, Northeast China, affecting fire regime and forest ecosystem change at large spatio-temporal scales. In this study, we used a spatially explicit landscape model, LANDIS, to simulate the changes of fire regime and forest landscape under four larch caterpillar disturbance intensity levels scenarios in Huzhong forest area, northern of Da Hinggan Mountains. The results indicate that larch caterpillar disturbances would decrease fine fuel load and increase coarse fuel load in the 300 simulation years. Larch caterpillar disturbances would decrease fire frequency in the first 200 years, and the disturbances also decrease fire intensity and fire risk in the early and late stage of simulation. Larch caterpillar disturbances would decrease the area percent of larch cohorts and increase the proportion of white birch, and increase the degree of aggregation of white birch as a result of its strong seed dispersal and colonization ability. Disturbances would also decrease the mature and over-mature larch cohorts and increase all cohorts of white birch, especially the mature and over-mature cohorts. Larch caterpillar disturbances will decrease the stability of forest landscape, therefore,some measures preventing in- sect outbreak and ensuring the sustainable management of forest ecosystem should been taken in the study area.展开更多
文摘We find ourselves at the end of a national election season, one cycling through a particularly depressed economic situation, but Americans, a generally hopeful, forward looking lot have become accustomed to growing incivility and resentment in their politics. This resentment stems from what Albert Borgmann defines as the character of our late modern age--we are both sullen and hyper in our daily lives. This situation comes at the intersection of long developing modern elements stemming from the control of nature via a universal scientific method at the behest of our own aggressive pursuit of individuality. The nature of our lives are in turn reinforced and reproduced by our frenetic militarized mobilization to recapture political and economic leadership at an international level. This goal, spurred on by an elite oligarchical vanguard, is reinforced by a ＂wealth defense industry,＂ developed in the late 20th century, designed to protect the wealth of our own elite class. This industry has stripped traditional cultural and academic sites of their ability or interest in interrogating the present status quo, and has rendered them fiat, uninspiring, and indolent in the face of growing income inequities and injustice. American political science has essentially become, in the vein of Marita Sturken＇s work, kitschified--facile, glib, and easily reproduced so as to act as a balm to our bruised, sullen egos, longing for an age of innocence-a smooth and glassy yet opaque history that eases our consciences and forgives the growing antidemocratic practices of our civil oligarchy.
基金Under the auspices of National Natural Science Foundation of China(No.31070422,40871245)Strategic Priority Research Program of Chinese Academy of Sciences(No.XDA05050201)
文摘Larch caterpillar (Dendrolimus superans) is very common in the Da Hinggan Mountains, Northeast China, affecting fire regime and forest ecosystem change at large spatio-temporal scales. In this study, we used a spatially explicit landscape model, LANDIS, to simulate the changes of fire regime and forest landscape under four larch caterpillar disturbance intensity levels scenarios in Huzhong forest area, northern of Da Hinggan Mountains. The results indicate that larch caterpillar disturbances would decrease fine fuel load and increase coarse fuel load in the 300 simulation years. Larch caterpillar disturbances would decrease fire frequency in the first 200 years, and the disturbances also decrease fire intensity and fire risk in the early and late stage of simulation. Larch caterpillar disturbances would decrease the area percent of larch cohorts and increase the proportion of white birch, and increase the degree of aggregation of white birch as a result of its strong seed dispersal and colonization ability. Disturbances would also decrease the mature and over-mature larch cohorts and increase all cohorts of white birch, especially the mature and over-mature cohorts. Larch caterpillar disturbances will decrease the stability of forest landscape, therefore,some measures preventing in- sect outbreak and ensuring the sustainable management of forest ecosystem should been taken in the study area.
