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| 珠江上游融江流域森林景观格局现状及分析 | |
| 引用本文： | 黎良财,杨胜天,李耀强,邓利,肖万娟.珠江上游融江流域森林景观格局现状及分析[J].西北林学院学报,2012,27(5):26-31,216. |
| 作者姓名： | 黎良财 杨胜天 李耀强 邓利 肖万娟 |
| 作者单位： | 1. 广西生态工程职业技术学院,广西柳州545004;北京林业大学林学院,北京100083 2. 北京师范大学地理学与遥感科学学院,北京,100875 3. 柳州市林业局林业调查设计队,广西柳州,545001 4. 广西生态工程职业技术学院,广西柳州,545004 |
| 基金项目： | 柳州市科技基金(2009021603) |
| 摘 要： | 基于融江流域2009年森林资源二类调查数字化成果,运用景观生态学原理和景观指数分析方法,通过ArcGIS9.3和Fragstats3.3软件分析了融江流域的I级和II级景观格局特征。选取的景观指数包括斑块总面积(TA)、斑块个数(NP)、类型面积(CA)、平均大小(MPS)、香农多样性(SHDI)、优势度(LDI)、香农均匀度(SHEI)等。研究结果表明,融江流域以有林地和灌木林地组成的森林景观面积比达到74%,保障了流域景观的生态功能;在森林景观中杉木面积比约为49%,同时斑块密度和斑块边缘密度也较大,对景观类型的发育和保持结构功能的稳定都不利。建议将过于单一的杉木纯林向针叶林、针阔混交林结构调整。 |
| 关 键 词： | 森林景观 景观格局 景观优化 融江流域 |
An Analysis on Landscape Patterns of Rongjiang Watershed in the Pearl River Upstream |
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| LI Liang-cai , YANG Sheng-tian , LI Yao-qiang , DENG Li , XIAO Wan-juan.An Analysis on Landscape Patterns of Rongjiang Watershed in the Pearl River Upstream[J].Journal of Northwest Forestry University,2012,27(5):26-31,216. | |
| Authors: | LI Liang-cai YANG Sheng-tian LI Yao-qiang DENG Li XIAO Wan-juan |
| Institution: | 1(1.Guangxi Ecological Engineering Vocational and Technical College,Liuzhou,Guangxi 545004,China; 2.Forestry College,Beijing Forestry University,Beijing 100083,China;3.School of Geography,Beijing Normal University, Beijing 100875,China;4.Team of Forest Inventory and Planning,Liuzhou Forestry Administration,Liuzhou,Guangxi 545001,China) |
| Abstract: | Based on the data from forest resources survey in Rongjiang watershed of the Pearl River upstream,by using the landscape ecological theory and the method of landscape index,some characteristics of class I and class II landscape patterns were analyzed under the support of ArcGIS 9.3 and Fragstats3.3 softwares.Indicators to evaluate landscape patterns included total area,number of patch,class area,mean patch size,Shannon’s diversity index,landscape dominance index,Shannon’s evenness index and some other indices.The results showed that the forest landscape which consisted of forest lands and scrublands accounted for 74.15% of the total area,which ensured the ecological functions of the watershed.Area ratio of China fir in the forest landscape was about 49%,while the indices of patch density and patch edge density were also higher,which was negative to the development of the landscape and the maintenance of the stability of forest structure and function.It was recommended to adjust the tree structure from pure Cunninghamia lanceolata forest to coniferous forest and the mixed coniferous and broad leaved forest. |
| Keywords: | forest landscape landscape pattern landscape optimization Rongjiang watershed |
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