浙江农业学报
浙江農業學報
절강농업학보
ACTA AGRICULTURAE ZHEJIANGENSIS
2001年
1期
19-23
,共5页
降雨%林内雨%土壤肥力%侵蚀模数
降雨%林內雨%土壤肥力%侵蝕模數
강우%림내우%토양비력%침식모수
定位观测研究表明，降雨是林地形成土壤肥力的重要因素，特别是通过林冠层的穿透水和树干的径流水，其养分含量平均要比林外雨高80％左右。但在不同的气候条件下和不同的森林类型里，降雨输入土壤的养分差异悬殊。在无植被覆盖的坡地上，降雨会造成土壤侵蚀，使土壤养分入不敷出。
定位觀測研究錶明，降雨是林地形成土壤肥力的重要因素，特彆是通過林冠層的穿透水和樹榦的徑流水，其養分含量平均要比林外雨高80％左右。但在不同的氣候條件下和不同的森林類型裏，降雨輸入土壤的養分差異懸殊。在無植被覆蓋的坡地上，降雨會造成土壤侵蝕，使土壤養分入不敷齣。
정위관측연구표명，강우시임지형성토양비력적중요인소，특별시통과림관층적천투수화수간적경류수，기양분함량평균요비림외우고80％좌우。단재불동적기후조건하화불동적삼림류형리，강우수입토양적양분차이현수。재무식피복개적파지상，강우회조성토양침식，사토양양분입불부출。
Results of a long-term observation study on forest soil indicated that the precipitation was an important way in aspect of nutrient inputs to forest soil,especially the rain volume fluxed by canopy through fall and along the stem flow,in which the mean nutrient contents was about 80? higher than that on uncovered land.Whereas,the inputs of nutrient from rainfall was quite different among different climatic conditions and forest types.The precipitation caused soil erosion on the barren slopes land,resulting in nutrient exhaustion.
