期刊论文

中文

中南林业科技大学学报

1673-923X

2005

25

6

1-7

10.3969/j.issn.1673-923X.2005.06.001

国家“十五”科技攻关项目“长江中游湘南红壤丘岗区水土保持型植被建设研究与示范”（2004BA510130106）； 国家重点野外科学观测试验站(会同)项目；

本校为第一机构

在防护专用林、防护型用材林、防护型经济林和防护型薪炭林以2∶1∶1∶1比例配置的条件下,进行长期定位研究,其结果是:(1)在1～4 a期间,红壤区和紫色土区单位面积泥沙流失量分别减少38.98%和36.05%,平均含沙量分别减少41.19%和18.43%; 4～7 a期间,两区域泥沙流失量分别减少99.86%和75.73%,平均含沙量减少97.52%和 78.00%.(2)植被恢复后的第7 a,红壤区的土壤侵蚀量已控制在允许量以内,为3.42 t·km-2a-1;紫色土土壤侵蚀量以养分流失为标准时,在允许量以内,以成土量为标准时,尚有一定距离.(3)红壤水土流失量比紫色土小,在水土流失量的减小速度上大于紫色土区.红壤较紫色土区生态恢复快.(4)降雨量在...

A long-time local investigation was conducted, according to the arranged proportion of 2：1：1：1, on all the protecting forest, protecting timber forest, protecting economical forest, and protecting firewood forest. The results are obtained as follows, （1） In the first period of 1-4 year, erosion unit area decreased 38. 98% and 36.05% ; the averaging sediment decreased 41.19% and 18.43% in the red soil area and purple soil area. In the period of 4-7 year, erosion unit area decreased 99.86% and 75.73% the averaging sediment decreased 97. 52% ...