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中国农学通报 ›› 2015, Vol. 31 ›› Issue (34): 1-5.doi: 10.11924/j.issn.1000-6850.casb15050112

• 林学 园艺 园林 •    下一篇

马尾松林下不同套种模式的产流产沙与养分流失

黄石德   

  1. (1福建省林业科学研究院,福州 350012;2福建省森林培育与林产品加工利用重点实验室,福州 350012)
  • 收稿日期:2015-05-20 修回日期:2015-06-12 接受日期:2015-06-23 出版日期:2015-12-17 发布日期:2015-12-17
  • 通讯作者: 黄石德
  • 基金资助:
    国家林业局行业科研专项“长汀红壤侵蚀区生态经济型植被恢复技术研究”(201304303);福建省科技重大专项“水土流失初步治理生态循环与产业提升技术研究与示范”(2012NZ0002-1-5-2)。

Runoff and Sediment Characteristics and Nutrient Loss Under Forest Canopy of Pinus massoniana with Different Inter-planting Modes

Huang Shide   

  1. (1Fujian Academy of Forestry, Fuzhou 350012;2Fujian Provincial Key Laboratory of Silviculture and Forest Product Processing and Utilization, Fuzhou 350012)
  • Received:2015-05-20 Revised:2015-06-12 Accepted:2015-06-23 Online:2015-12-17 Published:2015-12-17

摘要: 为了筛选出能有效拦蓄径流和泥沙量以及减少养分流失的马尾松林下套种模式,以马尾松林下不同套种模式为研究对象,包括马尾松对照,马尾松林下套种油茶,马尾松林下油茶+花生以及马尾松林下油茶+大豆,对其产流产沙量和养分流失进行全年的定位监测。结果表明:产流产沙量与降雨量的分布规律基本一致,主要集中在春季和夏季,雨季的径流量和产沙量分别约占全年的84.47 %和86.08%。产流产沙还受到降水多寡的影响,在旱季比雨季对产流产沙的影响更为明显。径流量和产沙量均表现为显著相关(P<0.05)。与马尾松对照相比,套种油茶后年产流产沙和养分流失量均表现为略为增加,而在油茶林下套种花生和大豆后,产流产沙和养分流失量明显减少。表明在马尾松林下仅采取套种油茶的模式,可能会促进产流产沙,增加养分的流失,而在油茶林下增加种植绿肥的模式,能有效拦蓄径流泥沙量,减少养分流失。

关键词: 高光谱特征波段, 高光谱特征波段, 湿地指示植被, 倒数的对数, 东洞庭湖

Abstract: The paper aims to select inter-planting modes which could effectively conserve soil and water and decrease nutrient loss. Runoff and sediment characteristics and nutrient loss under forest canopy of Pinus massoniana with different inter-planting modes, including no inter-planting control, inter-planting with Camellia oleifera, inter-planting with Camellia oleifera and Arachis hypogaea, inter-planting with Camellia oleifera and Glycine max, were monitored for a whole year in Changting County, located in the northwestern Fujian Province. The results showed that the runoff and sediment were mainly concentrated in spring and summer, and their seasonal distribution rule was similar to that of precipitation. The runoff and sediment in wet season accounted for 84.47% and 86.08% of the entire quantities, respectively. The runoff and sediment were influenced by precipitation difference, which in dry season had obvious greater influence than in wet season. The runoff and sediment were significantly correlated (P<0.05). As compared with the control, annual runoff and sediment and nutrient loss had slight increase after inter-planting with Camellia oleifera, however, annual runoff and sediment and nutrient loss had obvious decrease after inter-planting with Camellia oleifera and two kinds of green manure. The research proved that only adopting inter-planting Camellia oleifera mode could stimulate runoff and sediment and increase nutrient loss, but inter-planting modes through green manure planting could effectively conserve soil and water and decrease nutrient loss.