基于复杂网络理论的西藏巴宜区森林景观空间结构研究  

Forest Ecological Network Construction and Structure Evaluation Based on Complex Network Theory in Bayi District of Tibet

作　　者：卢杰[1,2] 王戈 马骏 于强[3] 高郯[1,2] 牛腾 LU Jie;WANG Ge;MA Jun;YU Qiang;GAO Tan;NIU Teng(Institute of Tibet Plateau Ecology,Tibet Agriculture&Animal Husbandry University,Nyingchi 860000,China;Key Laboratory of Forest Ecology in Tibet Plateau(Tibet Agriculture&Animal Husbandry University),Ministry of Education,Nyingchi 860000,China;Beijing Key Laboratory of Precision Forestry,Beijing Forestry University,Beijing 100083,China)

机构地区：[1]西藏农牧学院高原生态研究所,林芝860000 [2]西藏高原森林生态教育部重点实验室,林芝860000 [3]北京林业大学精准林业北京市重点实验室,北京100083

出　　处：《农业机械学报》2021年第4期152-158,共7页Transactions of the Chinese Society for Agricultural Machinery

基　　金：西藏高原森林生态教育部重点实验室开放课题项目(XZA-JYBSYS-2019-01)。

摘　　要：西藏巴宜区降水量丰富,但地质灾害频发,森林生态系统的水源涵养功能取决于森林景观空间结构的优劣,这对于区域生态稳定至关重要。以西藏巴宜区为研究区,基于复杂网络理论和景观生态学分析方法识别并构建区域森林景观空间网络,并运用复杂网络特征指标及鲁棒性分析方法分析该森林景观空间网络的拓扑结构特征及抗破坏能力。结果表明:西藏巴宜区的森林景观空间网络度分布呈现幂律分布,具有无标度性特征,该网络具有非均匀特性,网络结构稳定性较差,且随机攻击下的边与节点恢复鲁棒性优于恶意攻击下的恢复鲁棒性。The Bayi District of Tibet is rich in rainfall and frequent geological disasters. The water conservation function of the forest ecosystem is vital to regional ecological stability. The stable performance of its functions depends on the spatial structure of the forest landscape. Therefore,the forest landscape should be studied accurately. The characteristics of the spatial structure are of great significance to the subsequent optimization of the layout. Taking Bayi District of Tibet as the research area,based on complex network theory and landscape ecology analysis methods,the forest ecological corridor was extracted through the least cumulative resistance model,and then the fragile ecological nodes on the forest ecological corridor were identified. It constituted a forest ecological network intertwined with"point-line-surface". And the complex network static characteristic index and robustness analysis method were used to analyze the topological structure characteristics and anti-destructive ability of the forest landscape spatial network. The results showed that the degree distribution of the forest landscape spatial network in Bayi District of Tibet presented a power-law distribution and had the characteristics of nonscaling. The network had non-uniform characteristics,the network structure was less stable,and under random attacks,the edge and node recovery robustness was better than malicious attacks.

关 键 词：西藏巴宜区 最小累积阻力模型 森林生态网络 复杂网络分析方法 结构鲁棒性 

分 类 号：P9[天文地球—自然地理学]