| 北京山区侧柏人工林林内景观质量分级技术 |
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| 引用本文： | 赵凯,李金航,刘海轩,马冰倩,龙嘉翼,崔哲浩,徐程扬.北京山区侧柏人工林林内景观质量分级技术[J].浙江农林大学学报,2019,36(3):557-564. |
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| 作者姓名： | 赵凯 李金航 刘海轩 马冰倩 龙嘉翼 崔哲浩 徐程扬 |
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| 作者单位： | 北京林业大学 林学院, 北京 100083 |
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| 基金项目： | 国家林业公益性行业重大项目201404301 |
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| 摘 要： | 北京山区侧柏Platycladus orientalis人工林在发挥生态服务功能的同时，其景观质量也备受关注，林内景观质量受美学质量和林分结构质量共同影响。综合考虑美学质量与林分结构质量，对北京山区侧柏人工林进行林内景观质量分级。通过相关分析筛选与林内美景度显著相关的林分结构指标，通过因子分析和逐步回归分析构建美景度模型，使用TOPSIS法和系统聚类分析对林内景观质量进行分级。结果显示:①平均胸径、林分密度、平均枝下高、灌木盖度、透视距离、郁闭度、径高比与美景度呈显著相关（P < 0.05），林下有效空间与美景度呈极显著相关（P < 0.01）；②二次多项式逐步回归模型能够更好地解释林分结构与美景度间的关系；③将山区侧柏人工林分为高质（Ⅰ级）、中等（Ⅱ级）、低质（Ⅲ级）3个等级，选择在各等级间差异显著的平均胸径、林分密度、平均枝下高、径高比、林下有效空间指标作为划分等级的主要参考依据。林内景观质量等级较高的林地，树木粗壮且长势较好，林分密度不宜过大，枝下高较高且林下灌木较低矮，具有一定的林下空间，林内可进入性较高。
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| 关 键 词： | 景观生态学 侧柏人工林 美景度评价 TOPSIS法 景观质量分级 |
| 收稿时间： | 2018-07-17 |
Landscape quality grading technology for Platycladus orientalis plantations in Beijing mountainous areas |
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| ZHAO Kai,LI Jinhang,LIU Haixuan,MA Bingqian,LONG Jiayi,CUI Zhehao,XU Chengyang.Landscape quality grading technology for Platycladus orientalis plantations in Beijing mountainous areas[J].Journal of Zhejiang A&F University,2019,36(3):557-564. |
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| Authors: | ZHAO Kai LI Jinhang LIU Haixuan MA Bingqian LONG Jiayi CUI Zhehao XU Chengyang |
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| Institution: | College of Forestry, Beijing Forestry University, Beijing 100083, China |
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| Abstract: | Platycladus orientalis plantations in the Beijing mountainous areas provide an ecological service function paying much attention to its landscape aesthetic quality with forest landscape quality being influenced by aesthetic quality and quality of stand structure. This study considered both aesthetic quality and stand structure for Beijing mountainous area biota of P. orientalis plantation forests for landscape grading quality. The forest structural indexes strongly related to scenic beauty in the forest were selected through a correlation analysis; then the landscape model was constructed by factor analysis and stepwise regression analysis; and finally the forest landscape quality was classified by the TOPSIS method and systematic cluster analysis. Results showed (1) the average diameter at breast height (DBH) (r=0.284), forest density (r=-0.285), average height of the clear bole (r=0.274), shrub coverage (r=0.307), perspective distance (r=0.311), density (r=-0.323), and diameter to height ratio (r=0.307) were significantly correlated with scenic beauty (P < 0.05). The effective space under the forest had a highly significant correlation to scenic beauty (r=0.457, P < 0.01). (2) The Quadratic Polynomial Stepwise Regression Model better explained the relationship between forest fractional structure and landscape degree. (3) The mountainous area of P. orientalis was divided into three levels:high quality (Level Ⅰ), medium grade (Level Ⅱ), and low quality (Level Ⅲ). The average DBH, forest density, average clear bole height, diameter to height ratio, and effective spatial index under the forest were selected as the main references for classification. Thus, the forest landscape with high quality was thick and strong with the density of trees relatively favorable, the density of the forest not too large, a higher clear bole, and a relatively low forest underbrush, having a certain undergrowth space and higher accessibility of the forest. |
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