北京地区油松、侧柏人工林叶面积指数变化规律

生态学杂志

北京地区油松、侧柏人工林叶面积指数变化规律

王希群¹;马履一¹;张永福²

¹北京林业大学省部共建森林培育与保护教育部重点实验室，北京 100083；
²北京市十三陵林场, 北京 102200

收稿日期:2006-02-20 修回日期:2006-06-13 出版日期:2006-12-10 发布日期:2006-12-10

Change patterns of leaf area index (LAI) of Pinus tabulaeformis and Platyc ladus orientalis plantations in Beijing

WANG Xiqun¹;MA Lüyi¹;ZHANG Yongfu²

¹Key Laboratory for Silviculture and Conservation of Education Ministry,Beijing Forestry University,Beijing 100083, China;
²Beijing Shisanling Fo rest Farm, Beijing 102200, China

Received:2006-02-20 Revised:2006-06-13 Online:2006-12-10 Published:2006-12-10

摘要/Abstract

摘要： 叶面积指数（LAI）是群体结构的重要参数，也是衡量林分质量的重要指标。通过光学测量方法和遥感技术等手段测量的大范围LAI需要进一步的地面实测验证。以北京十三陵林场为研究区，利用CI-110植冠分析仪和野外实测的69个油松和侧柏林分LAI为基础，分析了有效叶面积指数（LAI_e）与实测叶面积指数（LAI_a）的关系。结果表明，油松林的LA I_e/LAI_a之值在35.52%～36.36%；侧柏林的LAI_e/LAI_a之值在14.60%～16.72%。由于测定的油松、侧柏林分郁闭度在0.5～0.8，符合生态公益林的经营要求，因此油松、侧柏林的LAI是合适的，可以作为油松、侧柏林林分质量调控的一个重要依据。

关键词: 硫肥, 北方作物, 增产效应

Abstract: Leaf area index (LAI) is an important parameter in plant population structure research, and of significance in the estimation of stand quality. The large scope LAI obtained by optical measurement and remote sensing needs to be validated by actual survey. With Pinus tabulaeformis and Platycladus orientalis plant ations in the State Shisanling Forest Farm of Beijing as test objects, and using the LAI data obtained by Digital Plant Canopy Imager (CI-110) and field survey,this paper analyzed the relationship between effective LAI (LAI_e) and actual LAI (LAI_a).The results showed that the LAI_e/LAI_a ratio ofP. tabulaeformis plantation was 35.52%～36.36%, and that of P. orientalisplantation was 14.60%～16.72%. Because the canopy openness of test plantations ranged from 0.5 to 0.8, which accorded with the requirement of non-commercial forest m anagement, the LAI of P. tabulaeformis and P. orientalis plantations was appropriate to be used as an important gist in their quality control.

Key words: Sulfur fertilization, Crops, Increase production

王希群;马履一;张永福. 北京地区油松、侧柏人工林叶面积指数变化规律[J]. 生态学杂志.

WANG Xiqun¹;MA Lüyi¹;ZHANG Yongfu². Change patterns of leaf area index (LAI) of Pinus tabulaeformis and Platyc ladus orientalis plantations in Beijing [J]. cje.