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闽江入海口地区马尾松林林地利用效率评价研究

标题: 闽江入海口地区马尾松林林地利用效率评价研究
英文标题: The Woodland of Minjiang River Estuary Area Pine the Efficiency in the Use of Evaluation Research
作者: 周奇
出版时间: 2012-01-01
所在大学: 河北农业大学
关键词: 3S,林地质量评价,层次分析法,闽江
英文关键词: 3S,Forest land quality evaluation,analytic hierarchy process,Minjiang River
论文级别: 硕士
学位: 学位论文
导师: 谷建才
专业: 森林经理学
提交时间: 2012
摘要: 本文以闽江入海口沿岸林地为研究对象,结合3S技术,运用ARCGIS软件对研究区森林资源进行分析研究.主要进行了以下研究:(1)根据研究区09年二类调查数据以及大量文献参考,结合3S技术,对研究区林地利用现状与森林资源现状进行了系统的分析,研究区林分面积为11269.26 hm~2占研究区面积的76.6%,疏林地面积为166.26 hm~2占研究区面积的1.1%,灌木林面积为625.66 hm~2占研究区面积的4.3%,未成林地面积为206.98 hm~2占研究区面积的1.4%,无林地面积为490.5hm~2占研究区面积的3.3%.研究区林地类型以林分为主.马尾松是研究区的优势树种,面积分布最广,蓄积量最多,蓄积量为2364.5m~3,占所有树种的67.7%.湿地松为研究区第二大树种,蓄积为510.1m~3,占所有树种的14.6%.按各龄组面积排序为:中龄林〉幼龄林〉近熟林〉成熟林〉过熟林,中、幼龄林占据了研究区总面积的86.2%,成熟林只有5.35%.得出研究区森林资源分布的特点:(1)林地面积比例大,林业发展空间广阔,(2)针叶林地面积比例大,优势树种单一且突出,(3)成熟林面积较少,森林资源比较缺乏,(4)幼龄林和中龄林多,针叶林后续资源充足.(2)使用层次分析法对研究区林地质量进行分析评价,选取了土层厚度、坡向、坡位、坡度四个因子作为评价指标,通过专家打分构造矩阵得到了指标体系各指标的权重,权重排序为:土壤厚度〉坡度〉坡向〉坡位.从而建立起闽江入海口沿岸林地质量等级评价指标体系.(3)对研究区马尾松林林地功效等级划分为5级,后对各功效等级区域分布情况进行分析.得出Ⅰ级功效森林面积最多为4050 hm~2,占研究区总面积的56.58%;Ⅱ级功效森林面积2028.13 hm~2,占研究区总面积的28.33%;Ⅲ级功效森林面积878.77 hm~2,占研究区总面积的12.28%;Ⅳ级功效森林面积136 hm~2,占研究区总面积的1.9%;Ⅴ级功效森林面积64.99 hm~2,占研究区总面积的0.9%.5个质量等级地块中不同功效等级所占比例排序Ⅰ〉Ⅱ〉Ⅲ〉Ⅳ〉Ⅴ.(4)结合林地质量等级评价结果与研究区林地功效等级分布,进行综合对比分析,发现研究区质量等级1级的林地中有Ⅰ、Ⅱ两个功效等级的林地,所占面积分别为Ⅰ级290.46hm~2,Ⅱ级53.86hm~2.在质量等级2级林地中有Ⅰ、Ⅱ、Ⅲ三个功效等级的林地,所占面积分别为Ⅰ级1098.24hm~2,Ⅱ级499.81hm~2,Ⅲ级109.88hm~2.质量等级3级林地中有5个功效等级,所占面积分别为Ⅰ级1516.56hm~2,Ⅱ级914.05hm~2,Ⅲ级341.68hm~2,Ⅳ级40.65hm~2,Ⅴ级14.96hm~2.质量等级4级林地中有5个功效等级,所占面积分别为Ⅰ级1014.7hm~2,Ⅱ级483.16hm~2,Ⅲ级388.91hm~2,Ⅳ级80.88hm~2,Ⅴ级38.52hm~2.质量等级5级林地中有5个功效等级,所占面积分别为Ⅰ级130.04hm~2,Ⅱ级77.25hm~2,Ⅲ级38.3hm~2,Ⅳ级14.47hm~2,Ⅴ级11.51hm~2.本研究对闽江入海口沿岸森林资源的经营管理提供了参考价值,对研究区的开发利用和生态环境保护具有现实意义.
英文摘要: Based on the coast of minjiang river estuary woodland for example, combined with the "3 S" technology, the use of ARCGIS software forest resources in the study area were analyzed. The main the following studies:(1) According to the area of 09 second survey data and a large number of reference, combined with 3 S technique of study area, forest land use status and the forest resources current situation of system analysis, the study area is 11269.26 hm~2 stand area accounts for 76.6% of the area of the study area, open area of 166.26 hm~2 accounted for 1.1% of the area of the study area, the area of 625.66 hm~2 shrubbery accounted for 4.3% of the area of the study area, and not into the area of 206.98 hm~2 woodland of 1.4% of the area of the study area, non-forest land area of 490.5 hm~2 accounted for 3.3% of the area of the study area. The study area in forest type stand to give priority to. The advantage of pinus massoniana is tree species, the area's most widely distributed, most volume, volume of 2364.5 m~3, accounting for 67.7% of all species. Pinus elliottii for the second big tree species in the study area, the accumulation of 510.1 m~3, accounting for 14.6% of all species. According to the age group of area of order: middle age of stand > young forest > near-mature forest > mature forest > overmature forest in the research area, sapling occupies 86.2% of the total area, grove and only 5.35%. That study area of forest resource distribution characteristics: (1) the area proportion forest land, forestry development room is wide, (2) coniferous forest area proportion is large, a single tree species and outstanding advantages, (3) grove and less area, the relative lack of forest resources, (4) sapling and middle age of stand much, coniferous forest resources enough follow-up.(2) Using analytic hierarchy process to forest land quality analysis study area evaluation, the selection of the soil layer thickness, slope to, slope, and a slope four factors as evaluation index, through the expert scoring structure matrix got the index system of the weight of each index, weighted order for: soil slope > > thickness slope to > slope positions. To establish the minjiang river estuaries coastal forest land quality rank evaluation index system.(3) In the study area horsetail pine forest land efficacy hierarchy for 5 level, the effect of level analysis about the regional distribution.Ⅰlevel that effect most forest for 4050 hm~2, accounting for 56.58% of the total area of the study area;Ⅱforest area of 2028.13 hm~2 level efficacy, accounting for 28.33% of the total area of the study area;Ⅲforest area of 878.77 hm~2 level efficacy, accounting for 12.28% of the total area of the study area;Ⅳforest area of 136 hm~2 level efficacy, accounting for 1.9% of the total area of the study area;Ⅴforest area of 64.99 hm~2 level efficacy, accounting for 0.9% of the total area of the study area. Five quality level in the different effect level plot proportionⅠ>Ⅱ>Ⅲ>Ⅳ>Ⅴ.(4) Combined with forest land quality level evaluation result and research area woodland efficacy level distribution, carries on the comprehensive analysis, found that the study area 1 level quality grades of forest landⅠ,Ⅱtwo efficacy levels of forest land, accounting for the areaⅠlevel respectively 290.46 hm~2,Ⅱlevel 53.86 hm~2. In the quality level 2 levels of woodlandⅠ,Ⅱ,Ⅲhave three efficacy level forest, accounting for the areaⅠlevel respectively 1098.24 hm~2,Ⅱlevel hm~2 499.81, 109.88 hm~2Ⅲlevel. Quality level 3 grade five of forest land a efficacy level, accounting for the areaⅠlevel respectively 1516.56 hm~2,Ⅱlevel 914.05 hm~2,Ⅲlevel 341.68 hm~2,Ⅳlevel 40.65 hm~2, 14.96 hm~2Ⅴlevel. Quality rank 4 grade five of forest land a efficacy level, accounting for the areaⅠlevel respectively 1014.7 hm~2,Ⅱlevel 483.16 hm~2,Ⅲlevel 388.91 hm~2,Ⅳlevel 80.88 hm~2, 38.52 hm~2Ⅴlevel. Quality grade level 5 woodland has five efficacy level, accounting for the areaⅠlevel respectively 130.04 hm~2,Ⅱlevel 77.25 hm~2,Ⅲlevel 38.3 hm~2,Ⅳlevel 14.47 hm~2,Ⅴlevel 11.51 hm~2.This study of minjing estuary coast in the management of the forest resources to provide the reference value, to study the area development and the ecological environment protection has practical significance.