红壤坡地不同人工林水土保持规律  

Study on the law of soil and water conservation of different artificial forests in red slope field

作　　者：丁军[1] 王兆骞[2] 陈欣[2] 

机构地区：[1]平顶山学院,河南平顶山467002 [2]浙江大学生命科学学院,浙江杭州310029

出　　处：《平顶山学院学报》2005年第5期64-68,共5页Journal of Pingdingshan University

基　　金：国家自然科学基金重点项目(30030030)

摘　　要：通过对小流域人工水土保持林建成及其水土保持效果的研究,结果表明在6月前自然生长马尾松区和幼杉区的冠层郁闭度明显高于白桃-桃形李区、角竹-板栗-枇杷-青枣区和胡柚-雷竹-特早桔区,6月后各区林冠层郁闭度相差不大;随树龄的增加,径流量、径流深度、悬移质、推移质、土壤侵蚀模数减小,土壤侵蚀模数与降雨量的相关系数最高,其次是径流深度, 在与植被林分特征参数间的关系中与总盖度相关系数最大,而与其他林分相关系数偏小;各林区0～10cm和10～20cm土层的蓄水能力, 在6月、7月、8月和9月的变化趋势一致,并且10～20cm土层蓄水能力明显地高于0～10cm土层.The building of soil and conservation and its effects on soil and water conservation are studied in this paper. The results show the degree of shade in the forest＇s crown in natural pine trees and young China fir obviously are higher than other forest districts before June. After June all forest districts have similar degree of shade. With the age of the tree increasing, quantity of runoff, depth of runoff, suspended matter, processed matter, soil erosion modulus are decreasing. The coefficient between soil erosion modulus and quantity of rain is highest and depth of runoff is second position. At one time the result also shows the coefficient between soil erosion modulus and the total degree of shade is higher than other forest components. The ability to store water is identical in June,July,August and September is from 0cm to 10cm to 20cm soil layer. At the same time the ability to store water of the soil layer from 10cm to 20cm evidently is higher than of from 0cm to 10cm.

关 键 词：水土保持林 林冠层郁闭度 蓄水能力 土壤侵蚀模数 

分 类 号：S157.1[农业科学—土壤学]