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Scientia Silvae Sinicae ›› 2015, Vol. 51 ›› Issue (8): 88-94.doi: 10.11707/j.1001-7488.20150812

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Changes and Tendency Analysis of Forest Land Area in the Key Stated-Owned Forest Region: a Case Study Based on the Data of Forest Industry Region of Heilongjiang Province

Liu Lin1,2, Liu Meishuang2, Xu Yongfei3, Liu Junchang1   

  1. 1. School of Economics and Management, Beijing Forestry University Beijing 100083;
    2. College of Engineering and Technology, Northeast Forestry University Harbin 150040;
    3. College of Economics and Management, Northeast Forestry University Harbin 150040
  • Received:2014-09-17 Revised:2014-12-18 Online:2015-08-25 Published:2015-09-10
  • Contact: 刘俊昌

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Abstract:

[Objective] This paper used forest region in Heilongjiang Province as an example to investigate certain regularity and characteristics of the changes in forest woodland area during 1981—2010, and analyzed the developmental trend in the future to get valuable conclusions. The research conclusions can provide a certain reference for the establishment of related management policies and basis.[Method] Following indicators were used to reflect the actual changes in forest area: forestry land area, forest land area, open forest land area, non-forest land area, not into woodland area, non-forest area, natural forest area, plantation area, forest land use efficiency, productivity of woodland. Based on the inventory data from 1990 to 2010 and using the theory of grey GM (1, 1) model, the forest stock volume per unit and forest land area of 2025 were predicted with the help of MATLAB software. [Result] 1) The total area of the forest management and forest land area shows the tendency of double down in the forest industry region of Heilongjiang Province during 1981—2010, a huge number of forest land were illegally occupied in forest region. 2) Forest land area in forest industry region of Heilongjiang province e increased from 686.75×104 hm2 in1990 to 804.45×104 hm2 in 2010, the increasing rate was 17.14%. 3) Forest land area reached a minimum point in the second forest resources review and then increased rapidly, finally leveled off after the fourth review, the results indicated that the positive effects of national forestry policy were gradually revealed. 4) Open forest land, not into woodland, non-forest land area was greatly reduced during the past 30 years. Forest land use efficiency increased from 73% to 96% between the first and the eighth review of forest resources. 5) Forest land use efficiency in the second forest resources review reached the lowest, then rised rapidly, until leveled off. A significant increase in forest land use efficiency was found, however, the important indicators of forest land productivity, the forest stock volume per unit dropped from 116.52 m3·hm-2 to 77.5 m3·hm-2 between the first and the fifth review of forest resources, the decreasing rate was 33%. It began to slowly rising after the fifth forest resource review. 6) Forest productivity showed lagging compared to the other indicators, reached its lowest point at the fifth forest resource review. 7) The prediction results showed that the forest stock volume per unit and forest land area would be reached 106.99 m3·hm-2 and will reach 831.41×104 hm2 in 2025, respectively.[Conclusion] The pressure of behavior in altering the forestry lands into other uses could not be overlooked, forest right management system need further improved. Once the forest resources were damaged, though the forest resources protection policies such as natural forest protection project were implemented, the recovery also needed a long time to go. It also reflected the importance of forest land resources protection, and nip in the bud is the most important.

Key words: forest land area, trend of development, key stated-owned forest region

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