本文關(guān)鍵詞：淹水對(duì)河竹鞭根系統(tǒng)生物量分配及異速生長(zhǎng)模式的影響，，由筆耕文化傳播整理發(fā)布。

淹水對(duì)河竹鞭根系統(tǒng)生物量分配及異速生長(zhǎng)模式的影響

Effect of Waterlogging on Biomass Allocation and Allometric Pattern of Rhizome and Root System of Phyllostachys rivalis

[1] [2] [3] [4] [5]

LIU Yu-fang, CHEN Shuang-lin, GUO Zi-wu, LI Ying-chun, YANG Qing-ping （Research Institute of Subtropical Forestry,Chinese Academy of Forestry,Hangzhou 311400,Zhejiang,China）

中國(guó)林業(yè)科學(xué)研究院亞熱帶林業(yè)研究所,浙江杭州311400

文章摘要：為了揭示長(zhǎng)期淹水對(duì)河竹鞭根系統(tǒng)生物量分配及異速生長(zhǎng)模式的影響，調(diào)查測(cè)定了人工噴灌供水（CK）和淹水處理（TR）3、6個(gè)月的河竹1年生竹鞭及其根系的生物量，分析了河竹鞭、根生物量分配對(duì)淹水環(huán)境的適應(yīng)和響應(yīng)策略。結(jié)果表明：淹水條件下河竹根系生長(zhǎng)受到抑制，生物量分配比例鞭〉根。與CK相比，淹水條件下河竹根系生物量及根系生物量／總生物量顯著降低，鞭生物量／總生物量升高。隨著淹水時(shí)間的延長(zhǎng)，河竹鞭、根大量生長(zhǎng)，生物量顯著升高，但根生物量／總生物量、鞭生物量／總生物量和水中鞭生物量／總生物量變化并不明顯。河竹鞭、根生物量間的關(guān)系在TR和CK處理下均符合冪函數(shù)增長(zhǎng)關(guān)系，但淹水條件下的異速生長(zhǎng)指數(shù)b要高于CK。研究表明河竹在鞭根系統(tǒng)生長(zhǎng)和物質(zhì)分配上具有較大的生態(tài)可塑性和可調(diào)節(jié)性，可以通過鞭根系統(tǒng)的生物量合理分配和異速生長(zhǎng)調(diào)節(jié)以逐步適應(yīng)淹水環(huán)境。研究結(jié)果可為河竹在水濕地和江河湖庫(kù)消落帶植被恢復(fù)中的應(yīng)用提供參考。

Abstr：This paper is to study the effect of the waterlogging on biomass allocation and allometric pattern of rhizo- me and root system in Phyllostachys rivalis. The biomass of 1-year-old bamboo rhizome and root was investigated in a pot experiment with treatments of artificial irrigation and waterlogging for three and six months. The response, ada- ptative strategy of biomass allocation in rhizome and root of Ph. rivalis under long-term waterlogging conditions were analyzed. The results showed that the growth of roots was inhibited under waterlogging conditions and the allocation proportion of Ph. rivalis biomass was in the order of rhizome 〉 root. Compared to the CK, the biomass of root and the ratio of root biomass to total biomass decreased significantly, the ratio of rhizome biomass to total biomass in- creased in the TR. It would grow lots of rhizome and root with the extension of waterlogging time and the biomass in- creased significantly. But no obvious impact of waterlogging on the proportion of rhizome biomass, root biomass or waterlogged rhizome in total biomass. The relationship between rhizome biomass and root biomass of Ph. rivalis ac- corded with positive power function in TR and CK. But the growth index in TR was higher than that in CK. By this research it showed that Ph. rivalis has ecological plasticity and regulatory on material distribution and growth of rhi- zome and root. And it could adapt to the waterlogging conditions gradually through reasonable distribution of biomassand allometric accommodation. This research could provide references for its application in vegetation restoration of wetland and areas of fluctuating water tables.

文章關(guān)鍵詞：

Keyword：:Phyllostachys rivalis rhizome and root system waterlogging biomass allocation allometric pattern growth strategy

課題項(xiàng)目：浙江省中國(guó)林業(yè)科學(xué)研究院省院合作項(xiàng)目（2012SY05）;浙江省自然科學(xué)基金項(xiàng)目（LY13C160001）;中央級(jí)公益性科研院所基本科研業(yè)務(wù)費(fèi)專項(xiàng)資金項(xiàng)目（RISF61258）

  本文關(guān)鍵詞：淹水對(duì)河竹鞭根系統(tǒng)生物量分配及異速生長(zhǎng)模式的影響，由筆耕文化傳播整理發(fā)布。