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The Establishment of Ecological Environment Database and the Analysis of the Forest Land Landscape in WuQi County

Author: ChenHongTao
Tutor: ZhaoPengXiang
School: Northwest University of Science and Technology
Course: Forest Management
Keywords: Ecological database Landscape Woodland Wuqi County
CLC: X171.1
Type: Master's thesis
Year: 2008
Downloads: 107
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In this study, the use of remote sensing technology means SPOT5 remote sensing images as the main information source on the basis of the field survey, Wuqi County woodlands information extraction, application Arcview GIS, VB and the Avenue programming tools initially established Wuqi County ecological environment database, can achieve database data, query, edit, statistics, and peer review functions of the spatial data and attribute data, the results to create the conditions for further ecological environment monitoring carried out in Wuqi County; same time, the use of the information in the database, focusing on Wuqi County woodland landscape pattern analysis. The results show that: (1) in the forestry land, woodland area 31211.71hm2, open woodland area 1691.3hm2, shrubbery area 111357.45hm2, barren land area 89710.38hm2, nursery ground area 89.64hm2, the unpaired forest land area 77950.65hm2, respectively accounted for 10.02%, 0.54%, 35.68%, 28.75%, 0.03% and 24.98% of the forest land area. Compared with the 1986 survey results, the county's forest coverage rate from 7% to 8.75% in 2005, an increase of 1.75%. (2) of Wuqi County landscape diversity rich enough a landscape as 0.4659, two landscape as 1.3337 the three landscape as 0.9656. The forestry land landscape is the matrix of the entire study area landscape shrub dominated forestry land. Two of Landscape and three landscape have to enhance the diversity of the landscape space, in the specific work to improve forest area, increase the proportion of young forest and coniferous forest, woodland landscape diversity to enhance. (3) the immature forest landscape in plaque density 4.95 / 100hm2, of relatively small degree of fragmentation. Therefore be considered from the landscape, pest control occurred, should increase the degree of fragmentation, and forestry production practices should be avoided large-scale afforestation single species. (4) two landscape landscape of barren land, the three coniferous young forest landscape, Bo class young forest and hardwood class young forest are poor ecological stability of the landscape types. Practice of forestry production as a priority object, young forest of pine, cypress class young forest and hardwood class young forest needs to be a focus on the protection, land suitable for afforestation can promote the surrounding plaque type conversion. (5) three landscape spread values, indicating relatively close to the same types of woodland forest land will lead to forest resources in the study area are unevenly distributed. (6) The vegetation landscape pattern of Wuqi County is in a state of change. Landscape pattern formation is mainly caused by natural causes and human interference, the driving force of human activities. Although the land area in the region of the study, complex terrain, serious soil erosion, water scarcity, causing small proportion of arbores landscape grass shrub landscape than, but in recent years the national implementation of the Grain for Green Project made in Wuqi County obvious effectiveness of the woodland landscape pattern in significant changes under the influence of the driving force of human factors. This study showed that, under the influence of human activities, immature forest landscape has been accounted for 20.56% of the area; land suitable for afforestation to other woodland direction transformed; increasing forest coverage.

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CLC: > Environmental science, safety science > The basic theory for the Environment and Science > Environmental Biology > Ecosystems and pollution ecology > Ecosystems and the ecological environment
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