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| | The topography,whether,rainstorm characteristics, rock and earth properties,soiland water losses,etc of bedrock mountain land in rainstorm centre region were studied in the as-pects of disposing comprehensive controlling measure of soil and water conservation, designing gullyprotective engineering under rainstorm circumstance and controlling developing way. It makes peo-ple fully realize the ecological economic law in mountain area and found optimized ecological econom-ic medle taking perennial economic pla... | | 该文以鲁山县清水河试点流域为例,对处于暴雨中心区基岩山地的地形、气候、暴雨特征、岩土性状及水土流失状况等,从水土保持综合治理措施配置、暴雨条件下的沟道防护工程设计和治理开发途经进行了探索性试验研究。通过试验研究使人们进一步认识了山区生态经济规律,建立以多年生经济植物为核心的生态经济模式,重塑森林生态平衡系统,以实现基岩山区环境优美、自然生态和社会经济同步协调发展的目标。 | | 文摘来源 | | Mengba river watershed is located in the south of Zhijin county, Guizhou province,the upper reaches of Sancha river,a main upper tributary of Wujiang river source.Since 1986, various comprehensive administration measures, including biological ones such as afforestation and closing hillsides to facilitate afforestation and engineering works such as vally dams in the watershed have been designed and implemented. And observations in a hierarchical way to evaluate the effect on hydrologic processes and soil and... | | 蒙坝河小流域位于贵州省织金县南部,地处乌江主要源头──三岔河的上游。1986年“七五”国家重点科技攻关项目《乌江上游砂页岩山地水保林、水源林营造技术研究及小流域综合治理试验示范区的建立》专题开始在该小流域开展定点研究,规划实施了各种综合治理措施,包括生物措施(人工造林、封山育林等)及谷坊等工程措施,并分层次布设观测点对其效益进行了评价。 | | 文摘来源 | | There is a soil loss area of 77. 1 thousand km2 in the hilly areas in central Sichuan, among which 32. 4% is extensively eroded. Taking Shizhong district, a typical representative of soil loss areas, as an experiment base, research into comprehensive harnessment technique has been conducted to control soil loss in extensively eroded mountainous area and sloping farmlard, and the benefit of the technique in conserving soil and improving ecological conditions is analyzed. It is shown that after comprehensive ... | | 川中丘陵区水土流失总面积为7.71万km~2,其中极强度流失面积占流失总面积的32.4%.以具有典型代表性的遂宁市市中区为基点,分别研究了荒山极强度侵蚀区和陡坡耕地极强度侵蚀区的综合防治技术,分析了极强度侵蚀区实施综合治理措施后的水保作用及生态经济效益.结果表明,极强度侵蚀区经综合治理后,年泥沙流失总量由10664.6t/km~2减少到647.3t/km~2,与未治理对照区相比,年径流量减少862%,土壤肥力平均提高61.4%. | | 文摘来源 | |   | | << 更多相关文摘 |
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