沙地樟子松人工林矿质营养循环的初步研究  

Primary study on mineral nutrition cycling in Pinus sylvestris var. mongolica plantation on sandy land

作　　者：张柏习[1] 韩辉[1] 张学利[1] 尤国春[1] 杨树军[1] 

机构地区：[1]辽宁省固沙造林研究所,辽宁阜新123000

出　　处：《辽宁林业科技》2014年第4期16-19,共4页Liaoning Forestry Science and Technology

基　　金：国家林业公益性行业科研专项(201004063)

摘　　要：该文以林龄为32 a的樟子松林作为研究对象,研究了沙地樟子松人工林林内K、P、Mg、Zn、Cu、Fe、Mn等矿质元素2010-2011年通过降雨输入、地表径流输出以及积累、留存、淋溶、归还、吸收等循环过程。结果表明:沙地樟子松林林分矿质元素的收入大于支出,呈盈余状态。但林分的生产力却比较低,生物生产量仅为2.604 t·hm-2·a-1,原因可能是樟子松林对矿质元素的利用率较低。同时林分的归还量少,林分矿质元素循环效率低。建议采取人工措施调控樟子松林,建立良性循环的生态系统。This study was conducted in apinus sylvestris var. mongolica plantation. The cycling process ofK,P ,Mg,Zn, Cu,Fe,Mn from 2010 to 201 lwere studied, including their input with mining, output with overland rtmoff, accumulation, retention, leaching, re- turn, uptake. The result indicated the mineral nutrition input was more than the output, and was in a surplus state. However, the forest productivity was relatively low, and the biological production was 2.604 t. hm-2. a-1, which may be due to the low nulrition utilization of Pinus sylvestris vat. rnongolica plantation. Meanwhile, the amount of forest return and cycling rate of mineral elements were low. Above all, we propose to regulate pinus sylvestris var. mongolica plantation artificially and establish an ecosystem with virtuous circulation.

关 键 词：沙地 樟子松 人工林 矿质元素 循环 

分 类 号：S763.4[农业科学—森林保护学]