The Woodland Of Minjiang River Estuary Area Pine The Efficiency In The Use Of Evaluation Research

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.