JOURNAL OF NATURAL RESOURCES ›› 2012, Vol. 27 ›› Issue (8): 1304-1315.doi: 10.11849/zrzyxb.2012.08.005

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Assessment of Forest Ecosystem Resilience in Lianhua County of Jiangxi Province

ZHAN Jin-yan1, YAN Hai-ming1, DENG Xiang-zheng2,3, ZHANG Tao1   

  1. 1. State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China;
    2. Institute of Geographic Sciences of Natural Resources Research, CAS, Beijing 100101, China;
    3. Center for Chinese Agricultural Policy, CAS, Beijing 100101, China
  • Received:2011-09-05 Revised:2011-12-14 Online:2012-08-20 Published:2012-08-20

Abstract: Ecosystem resilience is one of the key targets for sustainable development of forest resources and it plays an important role in maintaining the desirable ecosystem states that allow these ecosystem services to be delivered. The quantitative measurement of the forest ecosystem resilience is of great significance to assisting the sustainable development of forest ecosystems, but there have been very few quantitative measurement approaches in previous researches. An approach more plausible is to investigate the factors influencing resilience; with the definition of ecosystem resilience and scale clarified, the authors analyzed influencing factors of forest ecosystem resilience based on previous researches. The index system of forest ecosystem resilience was constructed with 26 indices with respect to the stand condition and ecological memory at the spatial resolution of 100 m. With Lianhua County of Jiangxi Province as the study area, the authors determined the index weights with the combinatorial weighing method and the forest ecosystem resilience was calculated with spatial overlay. The result indicated that the forest ecosystem resilience was mainly influenced by internal ecological memory, the weight of which reached 0.554; forest ecosystem resilience in Lianhua County was between 0.103 and 0.464, with the average value of only 0.268 and the forests above the average level accounting for only 49.2% of the total forest area, so the forest ecosystem resilience was low on the whole. The forest ecosystem resilience was relatively higher in the southern part while relatively lower in the northern part of Lianhua County. The result of the classification of forest ecosystem resilience suggested that only 48.16% of the forests reached the high or very high resilience level in total. The forests in the southern and middle parts were at high or higher level, while the forests in the northern part were generally at median, low or lower levels. In addition, it was a distinct characteristic that the forests with high ecosystem resilience mainly expanded along the boundaries of towns. The result can provide significant scientific reference information for the forest resource management.

Key words: forest management, ecosystem resilience, ecological memory, combinatorial weighing method, Lianhua County

CLC Number: 

  • S718.55