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长江是否将演变成“第二黄河”的讨论,在学术界已进行了两年多。然而论说纷云,认识不一。在各种论点已充分展开的条件下,中国林学会于1981年7月到9月,邀请林业、水利、水土保持和经济专业的科学工作者三十余人,到长江流域的赣湘川鄂四省考察水土保持。这是力求深入探讨长江问题的又一次努力。因为分歧在于对长江干支流含沙及其生态后果的看法上。河流之挟带泥沙,追根溯源多来自流域坡面的土壤侵蚀。要对长江干支流泥沙的普遍性,严重性和今后动向有个正确估计,就不能囿于当前干流河槽的泥沙,更要放眼广大流域,对水土流失的条件,规律进行探索。可以说此次考察水土保持,是长江问题学术讨论深化的必然。
Whether the Yangtze River will evolve into “the second Yellow River” has been discussed for more than two years in academia. However, talking about clouds, different understanding. Under the conditions that various arguments have been fully developed, the Chinese Society of Forestry invited more than 30 scientific workers in forestry, water conservancy, soil and water conservation and economy from July to September 1981 to the Jiangxi-Xiangchuan River in the Yangtze River valley Four provinces examine soil and water conservation. This is yet another effort to explore the issue of the Yangtze River in depth. Because the differences lie in the perception of the sediment and its ecological consequences of the Yangtze River tributaries. Rivers carry sediment, tracing more from the watershed slope soil erosion. If we have a correct estimate of the universality, seriousness and future trends of sediment in the Yangtze River and the tributaries of the Yangtze River, we can not ignore the current sediment in the river basins. We must also look into the vast river basins to explore the conditions and laws of soil and water loss. It can be said that the study of soil and water conservation is an inevitable result of the deepening academic discussions on the Yangtze River issue.