| 低效防护林改造的保土效益 |
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| 引用本文： | 王兴中.低效防护林改造的保土效益[J].水土保持通报,1998,18(2):14-18. |
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| 作者姓名： | 王兴中 |
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| 作者单位： | 重庆市林业科学研究所·重庆市·400036 |
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| 摘 要： | 通过对华蓥山低效防护林改造伯效益观测分析得出；低效防护林改造的保土效益明显。实施改造５年后，由４个径流场测得试验检平均土壤侵蚀模数仅３４．０５６ｔ／ｋｍ＾２。这一数据为合川市平均土壤侵蚀模数的１．３９％，减少了２４１７．９ｔ／ｋｍ＾２。在试验林丰茂的植被条件下，雨强对土壤侵蚀的影响已从首位上退下来，仅为雨量影响的１／６。
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| 关 键 词： | 低效防护林 改造 保土效益 土壤侵蚀模数 |
| 收稿时间： | 1997/3/10 0:00:00 |
| 修稿时间： | 1997年3月10日 |
Soil Conservation Effect of Reformed Low Beneficial Protection Forest |
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| Wang Xingzhong.Soil Conservation Effect of Reformed Low Beneficial Protection Forest[J].Bulletin of Soil and Water Conservation,1998,18(2):14-18. |
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| Authors: | Wang Xingzhong |
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| Institution: | Chongqing Research Institute of Forestry Science,Chongqing,400036,PRC |
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| Abstract: | The effect of a test reformed low beneficial protection forest established on the Huaying mo untain has been observed and appraised.The result shows that the soil conservation effect of the forest is obvious.Having been implemented reformatio n for five years,the mean value of soil erosion modulus by measuring fo ur runoff fields in test forest was merely 34.056t/km2.The value was 1.39% of the mean soil erosion modulus in Hechuan city.With lush vegetation in test forest,the effect of rain intensity on soil erosion have retreated from
the first place,it was merely 1/6 of that of precipitation. |
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| Keywords: | low beneficial protection f orest reforming soil conservation effect soil erosion modulus |
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