| From the provincial capital urban economy social development, the ecological security strategy embarks highly, the Jinan forestry is facing the extremely stern situation, mainly displays in: First organism's habits worsen (south mountainous area soil erosion, along yellow local desertification and so on) trend not yet keep within limits; Second standing forest mass is not high , the forest organism's habits function declines gravely; Third economic restructuring lags , industrial set-ups is unitary , follow-up estate develops slowly. How the objective appraises now available forest reserves current situation , the project adjusting industrial set-ups rationally , improving and perfecting further putting significant organism's habits of forestry into practice, realize organism's habits compensation and forest sustainable manage wait , appear especially urgent and need.This article take the Jinan area existing forest (including south ecology public welfare forest, economic forest, north plain protective forest, timber forest and so on) and the sustainable development as a goal, in view of the forest resources existence main question, to this local forest succession history and the forestry development present situation, aspects and so on forest resources present situation and dynamic analysis conducts the research, the use "3S" the technology, namely GIS (geographic information system), RS (remote sensing technology), GPS (satellite positioning system), simultaneously, applies investigation technologies and so on the TM, SPOT image, establishes the Jinan forest resources dynamic monitor system, software draws up the whole city forest resources present situation distribution map using the Photo Shop .The state-owned forest land uses the tree farm, the forest region (sub-field), the district, the bottom class in kindergarten four levels of regionalization, the collective forest land uses the county, the township, the village, the bottom class in kindergarten four levels of regionalization carries on the investigation. Adopts means which progressive compiles, according to each kind of resources data which compiles, From forest aspect such as area , forest coverage rates , accumulation , forest species , age of stand structure, the development making use of software such as Excel , SPSS , carrying out agriculture District forestry , forest reserves analyses.1. Forest resources present situation2000 year's end, the whole city forestry used area 201477.2hm~2, occupied whole city total acreage 817700hm~2 24.6%.In which: Forest land area 116272.2 hm~2 (including bush forest land area 1303.2hm~2); Stocked land area 4135.6hm~2; Has not grown into a forest planting area 3731.0 hm~2; Suitable for forestry area 76769.1 hm~2; Plant nursery area 569.3hm~2.The whole city forest always stores up 5290272 m~3; Whole city forest coverage fraction 19.7%.2. Forest resources dynamic analysis(1) according to several time city-wide forest resources investigation, Whole city forestry uses a field already from 115849.7 hm~2 of 1962 , increasing to 201477.2 hm~2 of 2000, is that 1.7 times of 1962 , the year increase 2253.4 hm~2 equally(2) Have forest land area , reason 19980.0 hm~2 of 1962 , increase to 116272.2 hm~2 of 2000, a woodland area in 2000 to 5.8 times in 1962.(3) founding of the nation, the Jinan ecological environment has had the gradually improvement, the round-off work had the very big enhancement, From 1949 the city's forest coverage rate 0.4%, increased to 19.7% in 2000, an annual average of 0.38%(4) Live stumpage total accumulation general trend is to increase year by year, mainly from year to year growth after 1962, by 1962 the total volume of 102018 m~3 in 2000, 5290272 m~3, 1962 is 51.9 times the average annual growth of 130,000 cubic meters.(5)forestry uses the present situation and develops the potential appraisalThe whole city existing forestry uses the area to divide into three parts roughly: A part has used in the forestry production the forest land, the second part for the suitable for forestry barren hill open land, the third part was takes back from agriculture returns the forest land This investigation plan 201477.2hm~2 forestry uses, in fact was my city which used for the forestry form 2000 to 2015. But in the entire province, the Jinan many forestry target is lower than other cities, This is very disproportionate with the development of provincial capital city Therefore solve the problem of "the big province is small capital", completion construction ecosystem City of grand construction target, increase a forestry to use ground is an inevitable exactitude decision(6) forest resources cultivation potentialMy city still have 76769.1 hm~2 available uses in the new forestry, include no woodland 1182.0 hm~2, barren hill and wasteland 41692.6 hm~2, Returning farmland to forest 33894.5 hm~2 In the non-forestry land,Still have a farmland not to have built the farmland network of forest and require to perfect a network of forest's 4135.6 hm~2., DO not carry on the agriculture and forestry farmland 814.2 hm~2, Therefore, the potential that forest reserves cultivates is very big , accomplishes a forestation if all-round , estimates that whole city forest coverage rates will reach 34.1% to 2015.3 .Key forestry ecological engineering construction benefit appraisalIn recent years, Jinan has started and implements the four forest project close hillsides to facilitate afforestation, the plain afforests, the green channel and Returning farmland to forest. Focus on the implementation of ecological afforestation project, the ecological, social benefits significantly, the provincial capital Jinan sustainable socio-economic development and improve the ecological environment has a positive role in promoting; Have taken project forestation as leading factor , has drive whole city forestation area , the survival rate, retention rate and improve the rapid growth; Have driven a barren mountain to afforest a course , have made Jinan barren mountain area fall off year by year, and have cultivated development of forestry estate..At the same time, this article presents the rational distribution of Jinan forestry ecological engineering, green ring system into Jinan City, the green belt around the city and outskirts of the city three levels of the building, built in the city within a relatively stable forest ecological system, three big afforestation system forming mountain area plain city and town within whole city range4. ConclusionsJinan forestry belongs to agricultural area forestry, according to several of the city's forest resources survey, come to the following conclusions:(1)Forestry land area gradually increasing With the social economy construction development and the improvement of the ecological environment, forestry land area is increasing gradually. the city forestry land in 1962 to 115849.7 hm2 and in 2000 to 201477.2 hm2, the 2000 is 1.7 times of 1962.(2) Woodland area steady increasingAs a result of increased closing hillsides to facilitate forestation and reforestation, forest area has increased year by year, increasing to 116272.2 hm2 in 2000, the forest area of 2000 is 5.8 times of 1962.(3) The total stock volume are increasing year by yearThe changing trend of the total stock volume is consist with the woodland area, since 1982 increasing rapidly .The total stock volume in 1962 to 102018 m3and in 2000 to 5290272 m3, the 2000 is 51.9 times of 1962, average annual increase 130,000 m3.(4) The dynamic changes of forest coverageSince 1949, Jinan City gradual improvement of the ecological environment, forest coverage were improved significantly from 1949 to 0.4 percent in 2000 to 19.7 percent, with an average annual increase 0.38 percentage points.The results suggest that, in recent years the implementation of the key ecological projects promote the growth of forest resources, and ecological construction has achieved preliminary results. |
PDF Full Text Request