长江上游水土保持和营造防护林体系关系到中下游长治久安

何乃维

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长江上游水土保持和营造防护林体系关系到中下游长治久安

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- 长江上游水土保持和营造防护林体系关系到中下游长治久安
- Soil conservation and construction of the protecting-forest system on the upper reaches of Yangtze River, being related to the control and safty on the lower reaches for long time
- 水土保持通报 1988年7卷第2期页码：13-17
- 作者机构：
  
  中国社会科学院农村发展研究所
- 作者简介：
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- 纸质出版：1988
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何乃维. 长江上游水土保持和营造防护林体系关系到中下游长治久安[J]. 水土保持通报, 1988,7(2):13-17.

He Naiwei. Soil conservation and construction of the protecting-forest system on the upper reaches of Yangtze River, being related to the control and safty on the lower reaches for long time[J]. Bulletin of Soiland Water Conservation, 1988, 7(2): 13-17.
何乃维. 长江上游水土保持和营造防护林体系关系到中下游长治久安[J]. 水土保持通报, 1988,7(2):13-17. DOI：

He Naiwei. Soil conservation and construction of the protecting-forest system on the upper reaches of Yangtze River, being related to the control and safty on the lower reaches for long time[J]. Bulletin of Soiland Water Conservation, 1988, 7(2): 13-17. DOI：

摘要

据1982年统计

长江流域水土流失面积已增加到73.94万平方公里

占总面积的41%

比1957年增加了1倍

虽然宜昌站测定年输沙量为6亿吨

但全流域的土壤侵蚀量可达24亿吨

比黄河流域严重得多。水土保持和防护林体系

关系到这一地区的社会经济发展、广大农民的脱贫致富以及改善生态环境的长远利益

也关系到中下游广大地区的长治久安。

Abstract

It is accounted that in 1982 the soil erosion area in Yangtze Riverwatershed has been raisen to 739

400km~2

being amounted to 41% of the totalarea and 1 times more than that in 1957.Although the annual sedimentload observed at Yichang station is 600 million tons

the total soil loss ofthe whole watershed can reach 2 billion ton

much more serious thanthat in the watershed of Yellow River. Soil conservation and protecting-forest system is connected with the social-economic development

thethrowing of poorness and obtaining of riching as well as the long-termbenefit in improvement of ecological environment of the region

it is alsorelated to the control and safty for long time of the wide area at middle-lower reaches.

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