| 呼中林区森林景观的历史变域模拟及评价 |
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| 引用本文： | 吴志丰,李月辉,布仁仓,熊在平,常禹,陈宏伟,胡远满.呼中林区森林景观的历史变域模拟及评价[J].生态学报,2013,33(15):4799-4807. |
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| 作者姓名： | 吴志丰 李月辉 布仁仓 熊在平 常禹 陈宏伟 胡远满 |
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| 作者单位： | 1. 中国科学院沈阳应用生态研究所森林与土壤生态国家重点实验室,沈阳110016;中国科学院生态环境研究中心城市与区域生态国家重点实验室,北京100085
2. 中国科学院沈阳应用生态研究所森林与土壤生态国家重点实验室,沈阳,110016 |
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| 基金项目： | 国家自然科学基金资助项目(41271201,40871245,31070422,40701185); 中国科学院战略性先导科技专项资助项目(XDA05050201) |
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| 摘 要： | 在大兴安岭地区呼中区,将物种的年龄和分布信息进行随机化处理后,应用空间直观景观模型LANDIS对森林景观进行长时间(2500a)模拟,取物种演替稳定时间段作为模拟历史变域的数据来源.分别在景观水平和年龄类型水平上利用景观指数空间分析、主成分分析和核密度估计方法分析景观格局历史变域的模拟结果,并在二维空间坐标内,将研究区1990年、2000年森林景观特征与之比较.结果表明,各树种面积比例在模拟900a后都达到稳定状态,可作为无干扰条件下森林景观特征的历史变域;由于长期采伐,研究区1990年景观的斑块面积和破碎化程度都偏离了该历史变域,其中,过熟林偏离最明显,其斑块面积远小于历史变域,破碎化程度非常严重;虽然1990年后的采伐管理方案比之前的更为合理,但2000年的森林景观仍旧继续偏离历史变域.
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| 关 键 词： | 历史变域 景观格局 主成分分析 核密度分析 大兴安岭 |
| 收稿时间： | 5/8/2012 12:00:00 AM |
| 修稿时间： | 2012/10/26 0:00:00 |
Evaluation and simulation of historical range of variability of forest landscape pattern in Huzhong area |
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| WU Zhifeng,LI Yuehui,BU Rencang,XIONG Zaiping,CHANG Yu,CHEN Hongwei and HU Yuanman.Evaluation and simulation of historical range of variability of forest landscape pattern in Huzhong area[J].Acta Ecologica Sinica,2013,33(15):4799-4807. |
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| Authors: | WU Zhifeng LI Yuehui BU Rencang XIONG Zaiping CHANG Yu CHEN Hongwei and HU Yuanman |
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| Institution: | State Key Laboratory Of Forest And Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;State Key Laboratory Of Forest And Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;State Key Laboratory Of Forest And Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;State Key Laboratory Of Forest And Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;State Key Laboratory Of Forest And Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;State Key Laboratory Of Forest And Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;State Key Laboratory Of Forest And Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China |
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| Abstract: | After randomizing the input information of age and distribution of forest species we simulated the long-term (2500 years) dynamic of forest landscape pattern of huzhong area in Great Xing'an Mountains using spatially explicit landscape model (LANDIS), Then we took the period when simulation results reached stable as the time range to estimate the historical range of variability (HRV). Furthermore, we analyzed the relationship between HRV and the forest landscape pattern of 1990 and 2000 using principal component analysis and kernel density estimation methods. The simulation results showed that the succession of almost all forest species arrived to their stable status at around 900th year of the simulation, and the period afterwards was utilized to estimate the HRV; as to the characteristics of forest, landscape pattern in 1990 fell out of the HRV in area of patches and the degree of landscape fragmentation, especially mature and over-mature forest deviated significantly from HRV in patch area and fragmentation; though forest harvest management was better planned after 1990, the forest landscape pattern in 2000 still deviated from the HRV. |
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| Keywords: | historical range of variability (HRV) landscape pattern principal component analysis (PCA) kernel density estimation method the Great Xing' an Mountains |
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