摘要
1984-1990年,在江西省分宜县山下林场,对22年生杉木,马尾松人工林中的主要水文要素:降雨、林冠截留、树干茎流、土壤水分含量、径流及各种水的养分含量进行了测定,结果表明:人工林林冠的截留率为10.20-17.56％,茎流率为0.98-1.40％。土壤层较薄,含水率低,水文物理性质较差,土壤蓄渗性能较弱。林地径流量较小,且多为表层流。降雨输入林地的养分量大于径流的输出量。林内雨和树干茎流淋溶的养分量占养分还原总量的48-53％。其淋溶的K、Mg、N的养分量超过凋落物归还量。
From 1984 to 1990, the main hydrological factors, including precipitation, interception of canopy, stemflow, soil moisture, runoff and nutrient content in various water, were measured in the 22-year-old plantations ofCunninghamia lanceolata and Pinus massoniana in Fenyi county, Jiangxi pro-vince. The results indicated that the rate of canopy interception was about10.20-17.56%, the stemflow rate was 0.98-1.40%. The soil layers of theplantations were thinner, and water contents of soil were lower, physicalcharacters of hydrology worse, the properties of penetating and reservingwater less. The amount of runoff in forest land was lower, and most of itwa surface flow. The amount of nutrient input with rainfall in forest landwas more than the amount of runoff output. The nutrients of runfall inforest and leaching nutrients (from runoff account for 45-53% of the totalreducing nutrients. ), and the amounts of leaching K, Mg and N nutrientsto the soil of plantation were more than those of litterfall return.
出处
《林业科学》
EI
CAS
CSCD
北大核心
1993年第3期199-206,共8页
Scientia Silvae Sinicae
关键词
降雨
土壤水分
径流
杉木
马尾松
precipitation
Soil moisture
Runoff
Nutrient cycling
Cunninghamia lanceolata
