Susquehanna Shale Hills CZO - Leaf Area Index and Canopy Closure Data

Leaf Area Index (LAI) and Canopy Closure (CC) were measured from April to October of 2010 at up to 70 points in the watershed about every two weeks (twice a month). At each point, LAI and CC were measured in four directions and averaged. Soil moisture was measured at many of the same points on a regular basis. LAI was measured using a LAI-2200 instrument (LI-COR Biosciences). Canopy closure was measured with a spherical densiometer, Model C Forest Densiometers).

叶面积指数（Leaf Area Index, LAI）与冠层开度（Canopy Closure, CC）于2010年4月至10月间，在该流域内最多70个采样点开展测定，测定频率约为每两周一次（即每月两次）。在每个采样点处，分别从四个方向测定LAI与CC后取平均值。此外，研究人员在其中多数相同采样点定期测定土壤含水量。叶面积指数采用LI-COR Biosciences公司生产的LAI-2200型仪器进行测定，冠层开度则通过C型森林球面冠层密度仪（Model C Forest Densiometers）完成测量。