PROGRESS IN GEOGRAPHY ›› 2005, Vol. 24 ›› Issue (1): 31-40.doi: 10.11820/dlkxjz.2005.01.004

• Original Articles • Previous Articles     Next Articles

Major Research Perspectives on Environmental and Developmental Issues for the Longitudinal Range-Gorge Region (LRGR) in Southwestern China

WU shaohong1, DAI Erfu1, HE Daming2   

  1. nstitute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101;
    2. Yunnan University, Kunming, 650091
  • Received:2004-11-01 Revised:2004-12-01 Online:2005-01-25 Published:2005-01-25

Abstract:

Located in north-south directed mountains and valleys in Southwestern China, mainly in Yunnan Province , the Longitudinal Range-Gorge Region (LRGR) is a very important ecological corridor between South China and South-East Asian. Ecological changes in this region directly influence Chinese trans-boundary ecological security and resources security. Under the comprehensive conditions of environmental pattern on landform, climate, water, soil, vegetation as well as human activity, corridor phenomena in the south-north direction and barrier functions in the west-east direction have been showed distinctively on ecological economic system in this region. “Corridor-barrier” functions in LRGR are formed mainly by atmospheric circulation and geographical location; the barrier effect of North-South directive mountains to monsoon; and human activities. “Corridor-barrier” functions and its ecological effect in LRGR can be expressed as three major aspects: obviously three dimension distribution laws of vegetation in north-south direction, west-east direction and vertical direction; developed dry valleys and their fragile environments, and diverse ecosystems and their complicated patterns. Vital scientific research questions in this region include: ecological system changes and their driving factors, ecological effects of significant engineering construction projects, and trans-boundary ecological security as well as countermeasures. For better understanding of trans-boundary ecological security and socio-economic condition, ecological-economic regionalization is required to provide a scientific base. Based on macro ecological region system, social-economic indexes are applied to differentiate ecological-economic regions in this paper. The scheme divides the region into three temperature zones, seven natural zones, nineteen natural divisions and fifty-five economic districts.

Key words: “corridor-barrier&rdquo, ecological effect, ecological-economy regionalization, function, the Longitudinal Range-Gorge Region (LRGR), trans-boundary ecological security