检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:陆道调[1] 秦武明[1] 杨来安[1] 刘运华 伍善荣
机构地区:[1]广西大学林学院,南宁530004 [2]广西国有高峰林场,南宁530001 [3]国有钦廉林场,广西钦州535000
出 处:《中南林业调查规划》2006年第2期4-6,15,共4页Central South Forest Inventory and Planning
基 金:广西高峰林业相思树短周期工业用材基地高产林试验与推广及广西大学科研基金项目(X032069)资助
摘 要:基于广西区收集的马占相思工业人工林林分标准地及优势解析木73株,拟合其优势树高生长的Chpman-Richards模型;从14~26m指数级拟合总剩余标准差小于0.29m,最大的为0.40m;以15a作为基准年龄,采用参数预估法编制了该区域的马占相思林多形地位指数表;经另置的31株优势解析木样本检验,指数级预报误差平均值为0.38m,最大误差为0.55m;龄级的预报误差平均值为0.33m,最大0.65m;所研建的模型用于编表,适应性能好。Based on the data of Acacia mangium industrial plantation in Guangxi,including a series of sample plots and 73 dominant analysis trees ,the height growth model was simulated and established by using Richards function,and the fitting mean residue standard variations of the models on site index classes (from 14 to 26 m) are less than 0.40 m.The multi-shape site index table of the stand has been compiled in the region according to the fitting model of which the reference year is 15.Testing results show that the fitting and predicting precision of the curve model is high based on another 31 dominant analysis trees, i.e. ,the predicting mean errors are 0.38 m,and the max 0.55 m in site classes, and 0.33 m, 0.65 m respectively on age classes. So, the established table is applicable and reliable.
关 键 词:马占相思 多形地位指数表 建模 工业人工林 广西
分 类 号:S758.62[农业科学—森林经理学]
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.28