Major Research Perspectives on Environmental and Developmental Issues for the Longitudinal Range-Gorge Region (LRGR) in Southwestern China
Major Research Perspectives on Environmental and Developmental Issues for the Longitudinal Range-Gorge Region (LRGR) in Southwestern China
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发表时间：
2005
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通讯作者：
H. Daming
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作者：
H. Daming
纵向岭谷区位于中国西南部，主要分布在云南省境内，是中国南方与东南亚之间的重要生态走廊。该地区的生态变化直接影响到中国的跨境生态安全和资源安全.在地貌、气候、水土、植被以及人类活动等环境格局的综合条件下，该地区生态经济系统明显地表现出南北向的廊道现象和东西向的屏障作用。长江三峡库区的“廊道-屏障”作用主要是由大气环流和地理位置、南北向山脉对季风的屏障作用以及人类活动等因素形成的。“廊道-屏障”功能及其生态效应主要表现在植被南北向、东西向和垂直向的立体分布规律明显，干旱河谷发育，生态环境脆弱，生态系统多样，格局复杂等三个方面。生态系统变化及其驱动因素、重大工程建设的生态效应、跨界生态安全及其对策等是该地区的重要科学研究问题。为了更好地了解跨界生态安全和社会经济状况，需要进行生态经济区划，提供科学依据。本文从宏观生态地域系统出发，运用社会经济指标划分生态经济区。该计划将该地区划分为三个温度区，七个自然区，十九个自然区划和五十五个经济区。
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.