本文選題：水分物理性質(zhì) + 容重　； 參考：《西南農(nóng)業(yè)學(xué)報(bào)》2017年05期

【摘要】：【目的】為了解海拔對(duì)毛竹林土壤水分物理性質(zhì)及竹葉SPAD的影響。【方法】在河北省崇陽(yáng)縣選擇2個(gè)海拔梯度的毛竹林進(jìn)行了對(duì)比研究,分析其土壤容重、空隙狀況、持水性能和葉片SPAD的差異�！窘Y(jié)果】隨著海拔的升高,土壤容重呈下降的趨勢(shì),而土壤孔隙狀況(非毛管孔隙度、毛管孔隙度和總孔隙度)和持水性能(最大持水量、毛管持水量和最小持水量)均呈增加的趨勢(shì)。隨著土層的加深,土壤容重增加,而土壤孔隙狀況和持水性能下降。海拔對(duì)容重、毛管持水量和最小持水量影響顯著;土層對(duì)容重、最大持水量影響顯著。I度竹SPAD值表現(xiàn)為低海拔高海拔,而II度和III度竹則表現(xiàn)為低海拔高海拔;土壤水分物理性質(zhì)中,容重、毛管持水量和非毛管孔隙度對(duì)毛竹葉片SPAD值的影響較大。【結(jié)論】海拔梯度造成了土壤水分物理性狀的差異,對(duì)毛竹生長(zhǎng)有一定影響。本研究區(qū)高海拔土壤水分物理性質(zhì)較低海拔可能更適合毛竹分布。
[Abstract]:[objective] to understand the effect of altitude on soil moisture and SPAR of Phyllostachys pubescens forest. [methods] two bamboo forests with elevation gradient were selected in Chongyang County, Hebei Province, and the soil bulk density and gap status were analyzed. [results] with the increase of altitude, soil bulk density decreased, while soil porosity (non-capillary porosity, capillary porosity and total porosity) and water-holding capacity (maximum water holding capacity) decreased. Both capillary water holding capacity and minimum water holding capacity showed an increasing trend. With the deepening of soil layer, the bulk density of soil increased, while the porosity and water holding capacity of soil decreased. The effect of altitude on bulk density, capillary water holding capacity and minimum water holding capacity was significant, and the maximum water holding capacity of soil layer showed significant influence on bulk density, I. the Spad value of bamboo showed high altitude at low altitude, while that of II degree and III degree bamboo showed high altitude at low altitude. In the physical properties of soil moisture, bulk density, capillary water holding capacity and non-capillary porosity had great influence on the Spad value of Phyllostachys pubescens leaves. [conclusion] elevation gradient resulted in the difference of soil moisture physical properties and the growth of Phyllostachys pubescens. The physical properties of soil moisture at high altitude in this study area may be more suitable for distribution of Phyllostachys pubescens at lower altitude.
【作者單位】： 湖北省環(huán)境科學(xué)研究院;
【基金】：國(guó)家林業(yè)局林業(yè)公益性行業(yè)科研專(zhuān)項(xiàng)(201104058)
【分類(lèi)號(hào)】：S714.2
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本文編號(hào)：2085655