Simulating impact of larch caterpillar (Dendrolimus superans) on fire regime and forest landscape in Da Hinggan Mountains, Northeast China
Simulating impact of larch caterpillar (Dendrolimus superans) on fire regime and forest landscape in Da Hinggan Mountains, Northeast China
复制标题
模拟落叶松毛毛虫（Dendrolimus superans）对东北大兴安岭火情和森林景观的影响
DOI：
10.1007/s11769-011-0494-9
复制
发表时间：
2011-09
影响因子：
3.4
通讯作者：
Liu Miao
中科院分区：
文献类型：
--
作者：
Chen Hongwei;Hu Yuanman;Chang Yu;Bu Rencang;Li Yuehui;Liu Miao
落叶松毛虫是大兴安岭林区的常见害虫，在大时空尺度上影响着林火动态和森林生态系统的变化。利用LANDIS景观模型，模拟了大兴安岭北方呼中林区4种落叶松毛虫干扰强度下的林火动态和森林景观变化。结果表明，在300年的模拟过程中，落叶松毛虫的干扰会降低细可燃物的负荷，增加粗可燃物的负荷。落叶松毛虫的干扰在前200年内会降低林火发生的频率，在模拟的前期和后期也会降低林火的强度和危险性。落叶松毛虫的干扰会降低落叶松种群的面积百分比，增加白色桦的比例，并增加白色桦的聚集程度，这是因为其具有较强的种子扩散和定殖能力。干扰也会减少成熟和过成熟落叶松的种群，增加所有白色白桦的种群，特别是成熟和过成熟的种群。落叶松毛虫的干扰会降低森林景观的稳定性，因此，应采取一定的措施防止虫害的发生，确保研究区森林生态系统的可持续经营。
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 insect outbreak and ensuring the sustainable management of forest ecosystem should been taken in the study area.
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DOI：
--
发表时间：
--
期刊：
--
影响因子：
--
作者：
H. HONGS.
通讯作者：
H. HONGS.
影响因子：
0.6
作者：
Jian Yang
通讯作者：
Jian Yang
影响因子：
--
作者：
Yujia Zhang;B. Zeide
通讯作者：
Yujia Zhang;B. Zeide
DOI：
--
发表时间：
1994
期刊：
--
影响因子：
--
作者：
刘宽余
通讯作者：
刘宽余
影响因子：
1.6
作者：
R. Walker;R. M. Fecko;W. B. Frederick;J. Murphy;Dale W. Johnson;W. W. Miller-W.
通讯作者：
R. Walker;R. M. Fecko;W. B. Frederick;J. Murphy;Dale W. Johnson;W. W. Miller-W.