| （摘要内容经过系统自动伪原创处理以避免复制，德语毕业论文，下载原文正常，内容请直接查看目录。） 为评价中德协作造林项目区的情况状态,本研究以荒山荒地、水蚀区、风蚀区、贫瘠山地等四品种型区为研究对象,对分歧区域内树木发展情形、生物多样性变更、泥土腐蚀及微地形情况变更停止了历久不雅测、查询拜访研究。成果注解：分歧类型区的生物多样性变更趋向根本分歧,跟着时光的推移,植物品种有所增长,植物多样性显著进步。分歧类型区中草本多样性指数值最高的是贫瘠山地,为2.23,最低的是荒山荒地,为0.95,排序是贫瘠山地>风蚀区>水蚀区>荒山荒地。四品种型区2017年泥土腐蚀强度排序是风蚀区>水蚀区>荒山荒地>贫瘠山地。泥土腐蚀强度变更幅度最年夜的是风蚀区,变更幅度最小的是贫瘠山地。四品种型区的泥土腐蚀强度变更均表示为后期动摇幅度较年夜,前期动摇幅度削减,且日益稳固。各类型区裸地景不雅面积逐步削减,乔木景不雅面积逐步增多,草本面积也赓续增长,枯落物景不雅面积变更较小。2017年四品种型区中乔木景不雅所占样线比例及排序是水蚀区(6.02%)>风蚀区(5.10%)>贫瘠山地(4.86%)>荒山荒地(2.64%)；灌木景不雅所占样线比例及排序是风蚀区(16.42%)>水蚀区(8.50%)>贫瘠山地(3.70%)>荒山荒地(3.42%)；草本景不雅所占样线比例及排序是荒山荒地(84.26%)>贫瘠山地(68.10%)>风蚀区(60.24%)>水蚀区(56.62%)；枯落物景不雅所占样线比例及排序是贫瘠山地(12.22%)、风蚀区(12.22%)>水蚀区(11.74%)>荒山荒地(2.84%)；裸地所占样线比例及排序是水蚀区(17.12%)>贫瘠山地(11.12%)>荒山荒地(6.84)>风蚀区(6.02%)。2017-2017年分歧类型区中山杏发展增幅排序状态是：贫瘠山地(增加48.11cm,涨幅为75.03%)>水蚀区(增加28.88cm,涨幅为36.00%)>荒山荒地(增加17.82cm,涨幅为27.28%)>风蚀区(增加17.50cm,涨幅为26.60%)；油松发展增幅排序状态是：水蚀区(增加104.61cm,涨幅为524.36%)>风蚀区(增加78.74cm,涨幅为424.70%)>荒山荒地(增加119.03cm,涨幅为286.61%)>贫瘠山地(增加66.85cm,涨幅为182.00%)。落叶松发展增幅排序状态是：贫瘠山地(增加385.75cm,涨幅为687.37%)>水蚀区(增加315.58cm,涨幅为547.41%)>荒山荒地(增加234.68cm,涨幅为323.56%)>风蚀区(增加68.92cm,涨幅为83.08%)。 Abstract: Evaluation of Sino German cooperation afforestation project area of the state, the study on barren hills and wasteland, water erosion area, wind erosion area, barren mountain, four varieties of type area as the research object, the differences within the region development status of trees, biological diversity change, soil erosion and micro topography change to stop the long-term observation, investigation and study. Results: different types of areas of biodiversity changes tend to be radically different, with the passage of time, plant varieties have increased, plant diversity significantly improved. Different type areas in herb diversity refers to the highest value is barren mountain, 2.23, lowest is barren hills and wasteland, 0.95, the sorting is barren mountain wind erosion area of > > water erosion area > barren hills and wasteland. Four types of soil erosion intensity in 2017 ranking is the water erosion area of wind erosion area of barren hills and wasteland barren mountain > > >. The biggest change in soil erosion intensity is the wind erosion area, the smallest change is barren hill. Four varieties of soil erosion intensity of the area are said to have more than the eve of the shake, the early stage of the reduction, and increasingly stable. Each zone type bare landscape area reduce gradually, tree landscape area gradually increased, herbaceous area also increases ceaselessly, litter material landscape area changes are minor. 2017 Joe four types of wooden landscape for line ratio and sorting is water erosion area (6.02%) > > (5.10%) wind erosion area of barren mountain (4.86%) > wasteland (2.64%); the shrub landscape for sample line ratio and sorting is a wind erosion area (16.42%) > 8.50% (water erosion area the barren mountain (3.70%) > > wasteland) (3.42%); herbaceous landscape for line ratio and sorting is a barren wasteland (84.26%) (68.10%) > > barren mountain wind erosion area (60.24%) > water erosion area (56.62%); litter the landscape for sample proportion and sorting line is a barren mountain (12.22%), wind erosion area (12.22%) > water erosion area (11.74%) > wasteland (2.84%); the sample line and the ratio of bare land for sorting is water erosion area (17.12%) > barren mountain (11.12%) > > wasteland (6.84) wind erosion area (6.02%). 2017-2017 different types of Zhongshan District apricot development growth sequence is: barren mountain (increase 48.11cm, or 75.03%) > water erosion area (increase 28.88cm, or 36.00%) > barren hills and wasteland (increase 17.82cm, or 27.28%) > wind erosion area (increase 17.50cm, or 26.60%); growth of Pinus tabulaeformis development sequence is: water erosion area (increase 104.61cm, or 524.36% > wind erosion area (increase 78.74cm, or 424.70%) > barren hills and wasteland (increase 119.03cm, rose to 286.61%) > barren mountain (increase 66.85cm, rose to 182%). Growth of Larch development sequence is: barren mountain (increase 385.75cm, or 687.37% > water erosion area (increase 315.58cm, or 547.41%) > barren hills and wasteland (increase 234.68cm, or 323.56% > wind erosion area (increase 68.92cm, or 83.08%). 目录: |
