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陕北刺槐林木生长及林下植被与土壤水分 对种植密度的响应特征
吴多洋1; 焦菊英1,2,3; 于卫洁2; 徐海燕1; 陈一先3
Source Publication西北植物学报

以陕西省安塞县2000年左右退耕栽植的5种不同密度(830~3 330株/hm2)刺槐林地为研究对象,分析
坡中2 500株/hm2 的刺槐林木平均胸径、树高与两个低密度林的差异显著,且平均冠幅与1 670株/hm2 差异显
著,与2 000株/hm2 差异不显著。(2)当栽植密度为1 670株/hm2 时,刺槐林地水分含量相对较高,林下植被平均
(4)阳坡中3 330株/hm2 的林地0~500cm土层含水量仅为4.5%,土壤干旱化严重,而830株/hm2 的刺槐林地土
壤水分为7.8%;阴坡中栽植密度为1 670~2 000株/hm2 的刺槐林地土壤含水量较高,为7.5%~8.2%。研究表
明,在陕北黄土高原丘陵沟壑区,刺槐初始造林密度不宜超过1 670株/hm2(株行距2m×3m),在进入刺槐生长高

Other Abstract

Abstract:In order to explore the impact of planting density on the locust growth,understory vegetation and
soil moisture on the Hilly-gullied Loess Plateau in northern Shaanxi,we observed and analyzed the locust
woodland planted around 2 000with five different planting densities.The results show that:(1)in sunny
aspect,the average DBH,tree height and crown between different densities were significantly different(P
<0.05).In shady aspect the average DBH and tree height in the density of 2 500plants/hm2 were significantly
different from the another two lower densities.The average crown was significantly different from 1
670plants/hm2 while insignificantly from 2 000plants/hm2(P>0.05).(2)Woodland soil moisture,coverof understory vegetation and species diversity were relatively higher under the density of 1 670plants/hm2.
(3)Soil moisture in 0~500cm depth of locust woodland with each density was lower than that of stable
soil moisture(12%)in the study area.(4)In sunny aspect,soil moisture in 0~500cm depth with density
of 3 330plants/hm2 was only 4.5%,while the density of 830plants/hm2 reached 7.8%,and the soil moisture
with density of 1 670plants/hm2 and 2 000plants/hm2 was relatively higher in shady aspect,which
was 7.5%~8.2%.The study suggests that the initial planting density of locust should not be more than 1
670plants/hm2(spacing of 2m×3m)in the hilly-gullied loess area and thinning management should be
taken to adjust the stand density after entering the peak growth period in order to maintain the stability and
sustainability of locust plantation

Keyword刺槐生长 响应特征 林下植被 土壤水分 黄土丘陵沟壑区
Indexed By中文核心期刊要目总览
Document Type期刊论文
3.中国科学院水利部 水土保持研究所
Recommended Citation
GB/T 7714
吴多洋,焦菊英,于卫洁,等. 陕北刺槐林木生长及林下植被与土壤水分 对种植密度的响应特征[J]. 西北植物学报,2017,37(2):346-355.
APA 吴多洋,焦菊英,于卫洁,徐海燕,&陈一先.(2017).陕北刺槐林木生长及林下植被与土壤水分 对种植密度的响应特征.西北植物学报,37(2),346-355.
MLA 吴多洋,et al."陕北刺槐林木生长及林下植被与土壤水分 对种植密度的响应特征".西北植物学报 37.2(2017):346-355.
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