江西千烟洲试区杉木人工林降雨过程及养分动态研究  

Rainfall process and nutrient dynamics of artificial Chinese fir plantation in Jiangxi Qianyanzhou experimental station

作　　者：陈永瑞[1] 林耀明[1] 李家永[1] 刘允芬[1] 杨汝荣[1] 

机构地区：[1]中国科学院地理科学与资源研究所,北京100101

出　　处：《中国生态农业学报》2004年第1期74-76,共3页Chinese Journal of Eco-Agriculture

基　　金：中国科学院知识创新项目 (KZCX2 40 7和CX10G E0 1 0 8 0 2 )资助

摘　　要：定位试验研究千烟洲试区杉木人工林生态系统水文过程及养分动态结果表明 ,该森林生态系统年降雨量为 1392 .0mm ,其中以林冠穿透雨形式输入林地水量占年降雨量的 89.38% ,以树干流形式输入林地水量占0 .2 7% ,林冠年截流量占 10 .35 %。以地表径流形式输出该系统的水量占年均降雨量的 9.4 %。该森林生态系统中随降雨年输入的N、P、K、Ca、Mg、Fe、Mn、Sr、Zr、Na、Si 11种营养元素总量为 14 4 .0 32kg/hm2 ,随地表径流年输出林地养分总量为 15 5 .335kg/hm2 ,年亏损量 11.30 3kg/hm2 。Course hydrologic and nutrient processes of artificial Chinese fir forest were studied by located experiment. The results show that the average annual rainfall is 1392.0mm, 89.38%, 0.27%, and 10.35% of which are allocated to throughfall, stemflow, and canopy interception, respectively. The surface runoff output is 9.4% of the average annual rainfall. The annual inputting nutrient by rainfall in plantation ecosystem including N, P, K, Ca, Mg, Fe, Mn, Sr, Zr, Na, and Si, amounts to 144.032kg/hm 2, and the surface runoff output is 155.335kg/hm 2. The annual net nutrient accumulation is -11.303kg/hm 2.

关 键 词：杉木人工林 降雨过程 养分动态 水文过程 森林生态系统 定位试验 

分 类 号：S791.27[农业科学—林木遗传育种]