园林生态实验报告.doc

园林生态实验报告2013/6/21此实验报告包括林内光强度的测定、林下温度的测定和树种的滞尘能力三个实验实验一:林内光照强度的测定一、 实验名称：林内光强度的测定二、 实验目的：获取白桦林下的光照强度三、 实验意义：通过林分下光照的测定，从而了解林冠对光照的影 响，以及光强对植物生长的影响。四、 实验器材：照度计，米尺，一些木棍五、 实验步骤：a、选定长势较好的白桦 b、确定桩点位置 c、用米尺在东西南北四个方位量取距桩点一米位置，用木棍确定侧桩点位置，再在侧桩点的四个方位上，各距50cm处用木棍确定小的侧桩点。d、进行测点，对16个点每20分钟测一次，获取一整天的数据。六、 实验数据时间东东平均南南平均10:1020042123170541772502.31582927014271425342610:301755198412562241180913401257124511431246.310:50172110090170220333886.526108860234811693746.814:201120134257221084231781228251024540.51300.414:409331394451.4560.1834.631565749.3781.2575.6917.7815:006303779.9408.6622.22028.4590.0634.9546.0459.1557.515:20715.7748.4344.1975695.8550.0597.6492.6422.5515.6815:40632.0620.0338.8466.6514.35860.9479.8584.0365.7572.616:00503.7555.7287.1391.9434.6388.0403.9362.8272.2356.7316:20471.6458.5248.8375.4388.58507.6550.5308.7237.5401.0816:40382.5422.8225.4274.8326.38313.4262.2257.1222.1263.7西西平均北北平均平均光强空旷地21143405211481103935.8124602473212717414700.33641.190930103402560196625254347.818529610206015243761.52791.17977021541917195856122910.31530162402081229355364019.961350105880901168516.42708.1925465999014802013.52084.73701026941126982.8444.21311.890810775417736.62034.71274.71234022101793816.713561543.9696.7903772.3702.9768.731224.624990875.5990674.0553.9773.35724.1862650.8631.3717.05675.4736010704.5685.0632.6658,3674.03532.4736.0528.0558.2588.65581.6314210636.5602.4562.6258.4514.98451.4615.9488.7487.5510.88454.2920990613.3535.3492.4182.0455.75397.8549.3406.8342.5424.1417.381554416.7352.6378.7171.8329.95322.6469.0373.1258.2355.73318.94758.3注：测定位置均为同一棵白桦树七、 结果分析：1、白桦树种下及空旷地的光照强度的对比2、不同方位光照强度变化对比分析：白桦林内郁闭度较大，上层树冠遮挡了大部分的光照，使林下光照强度大大降低。实验二：林下温度的测定一、 实验名称：林下温度的测定二、 实验目的：获取白桦林下的温度。三、 实验意义：通过对温度的测定，分析温度与树皮裂的关系。四、 实验器材：数字点温计、米尺，一些木棍五、 实验步骤：a、选择长势良好的白桦 b、选择0cm、80cm、150cm三个高度，并在距树身50cm处，四个方位用木棍做标记。 c、对树身上不同高度，不同方位以及对距树身50cm处0cm、80cm、150cm的高度进行测量，每20分钟测量一次，获取一整天数据。六、实验数据时间测定位置基部80cm150cm东西南北平均东西南北平均东西南北平均10:30树皮16.712.117.218.216.1 22.715.716.317.918.2 17.216.017.717.917.2 空气16.816.019.318.217.6 17.011.716.418.015.8 19.217.316.916.717.5 10:50树皮17.118.317.516.217.3 17.918.317.817.617.9 17.716.817.117.717.3 空气17.115.417.017.416.7 17.117.816.917.617.4 17.118.116.518.617.6 14:00树皮20.116.519.819.919.1 19.519.914.719.618.4 17.219.619.819.118.9 空气19.520.019.819.519.7 19.919.920.216.419.1 19.519.620.018.419.4 14:20树皮16.618.817.318.517.8 17.718.118.918.418.3 17.718.217.918.318.0 空气17.618.417.618.718.1 17.618.218.918.718.4 17.518.718.418.718.3 14:40树皮22.219.411.718.117.9 21.719.117.619.119.4 21.518.320.516.819.3 空气21.419.120.319.220.0 21.119.420.219.019.9 20.219.420.114.418.5 15:00树皮20.319.119.518.619.4 20.117.619.318.618.9 19.918.810.818.517.0 空气19.818.919.017.718.9 19.618.819.115.118.2 19.518.518.818.118.7 15:20树皮19.617.918.717.718.5 19.817.118.617.618.3 13.517.615.817.416.1 空气19.217.717.917.618.1 18.417.718.217.618.0 18.517.515.816.717.1 15:40树皮19.515.217.516.917.3 17.518.017.817.817.8 18.716.117.917.817.6 空气18.418.018.017.918.1 18.217.917.917.918.0 18.217.918.118.018.1 16:00树皮18.717.417.717.217.8 18.317.317.717.217.6 18.117.117.717.117.5 空气18.117.217.717.217.6 18.017.117.717.317.5 17.817.117.717.317.5 16:20树皮18.516.517.316.017.1 17.916.016.014.916.2 18.116.517.016.617.1 空气18.016.616.914.116.4 17.716.615.013.615.7 17.416.616.816.416.8 16:40树皮16.515.815.715.215.8 16.215.615.615.115.6 15.815.815.715.115.6 空气15.915.415.715.015.515.815.415.815.015.5 15.615.315.914.915.4 七、结果与分析：1、不同高度的树身与空气的温度变化分析：树皮开裂的树身温度受空气温度的影响比树皮未开裂的树身温度受空气温度的影响大。实验三：树种滞尘能力一、 实验名称：树种滞尘能力二、 实验目