WANG Min,XU Hailiang,YE Mao,et al.Relationship Between Different Stand Age Populus euphratica’s Radial Growth and Groundwater[J].Research of Soil and Water Conservation,2017,24(01):357-360.
不同林龄胡杨径向生长量与地下水的关系
- Title:
- Relationship Between Different Stand Age Populus euphratica’s Radial Growth and Groundwater
- Keywords:
- dendrohydrology; suitable water table; sensitivity; radial increment; groundwater depth; halfmature forest; near-mature stand forest
- 分类号:
- Q945;Q948.1
- 摘要:
- 胡杨是塔里木河河道周围重要的适生树种，对调节区域小气候具有重要的作用。径向生长是反映胡杨生长状况的重要指标，它与地下水位的关系是很多研究关注的焦点。以往的研究将所有林龄的胡杨作为一个整体来对它与地下水之间的响应关系进行研究，却忽略了胡杨由于林龄存在差异，它们对地下水位的响应可能不同。所以该文以塔里木河下游为研究区，选取了不同林龄胡杨的径向生长量作为研究对象，利用曲线回归的方法分别与地下水埋深建立函数关系，并借助灵敏度分析确定了其与地下水埋深响应的敏感点，以实现定量分析的目的。结果表明：（1）胡杨中林和近熟林的径向生长量随地下水埋深下降呈减小特点；（2）胡杨径向生长量受地下水埋深的影响，总体上为4次多项式，但不同林龄的胡杨遵循不同的拟合关系；通过灵敏度分析，胡杨林龄的差异导致其胁迫水位和停止生长的水位也不同。通过研究，证明了胡杨不同林龄与地下水的关系不同，因此在开展恢复时应采取不同的对策。
- Abstract:
- Populus euphratica is a main adaptive tree species of the Tarim River Basin, and it plays an important role in regional micro-climate regulation. The radial increment is one of the most important indices reflecting the growth status of the Populus euphratica, and the relationship between groundwater level and radial growth is also the focus of the research. Previous studies on the response relation between Populus euphratica and groundwater put the all forest age as a whole, and ignored the differences of different age forests response to groundwater. In order to realize the purpose of quantitative analysis, we selected the Tarim River lower reaches as study area, and radial growth of the different forest ages as the research sample, established functional relationship between these parameters respectively, the sensitive points were obtained by the method of sensitivity analysis. The results showed that: (1) the radial growth of halfmature forest and near-mature stand presented decreasing trend with the decline of groundwater depth; (2) the radial growth of different stand age Populus euphratica response to groundwater was different, which had different response function, but followed 4 times function on the whole. Through sensitivity analysis it was found that the stand age difference led to stress water level and growth arrest water level were different, this study proved that the relationship between different stand ages of Populus euphratica and groundwater was different, therefore, the recovery countermeasure should be different.
参考文献/References:
[1] 金晓媚.黑河下游额济纳绿洲荒漠植被与地下水位埋深的定量关系[J].地学前缘,2010,17(6):181-186.
[2] 朱军涛,于静洁,王平,等.额济纳荒漠绿洲植物群落的数量分类及其与地下水环境的关系分析[J].植物生态学报,2011,35(5):480-489.
[3] 李卫红,周洪华,杨晓明,等.干旱荒漠区草地植物群落地上生物量时空分布对地下水的响应[J].草业学报,2010,19(5):186-195.
[4] 曾晓玲,刘彤,张卫宾,等.古尔班通古特沙漠西部地下水位和水质变化对植被的影响[J].生态学报,2012,32(5):1490-1501.
[5] 杨尧军,袁宏波,刘淑娟,等.库姆塔格沙漠沙生柽柳种群与环境因子分析[J].干旱区研究,2013,30(5):827-831.
[6] 安红燕,徐海量,叶茂,等.塔里木河下游胡杨径向生长与地下水的关系[J].生态学报,2011,31(8):2053-2059.
[7] 湾疆辉,陈亚宁,李卫红,等.断流河道输水对地下水净补给量研究:以塔里木河下游为例[J].中国沙漠,2009,29(2):376-382.
[8] 徐海量,陈亚宁,杨戈.塔里木河下游生态输水对植被和地下水位的影响[J].环境科学,2003,24(4):18-22.
[9] 叶茂,徐海量,龚君君,等.不同胸径胡杨径向生长的合理生态水位研究[J].地理科学,2011,31(2):172-177.
[10] 许友.浅谈人工林生长发育阶段划分[J].民营科技,2012(11):136.
[11] 余伟莅.额济纳胡杨物候节律及生理生态特性研究[D].北京:北京林业大学,2013.
[12] 李香云,张蓬涛,章予舒.塔里木河下游绿色走廊特点及衰败成因分析[J].干旱区研究,2001,18(4):26-30.
[13] 李江风,袁玉江,尤希尧,等.树木年轮学研究与应用[M].北京:科学出版社,2000.
[14] 张宏.极端干旱气候下盐化草甸植被净初级生产力对全球变化的响应[J].自然资源学报,2001,16(3):216-220.
[15] 李国迎.塔里木河下游阿拉干断面胡杨根系空间分布规律研究[D].乌鲁木齐:新疆师范大学,2009.
[16] 黄晶晶,井家林,曹德昌,等.不同林龄胡杨克隆繁殖根系分布特征及其构型[J].生态学报,2013,33(14):4331-4342.
[17] 龚君君.塔里木河下游胡杨径向生长量对生态输水响应研究[D].乌鲁木齐:新疆师范大学,2011.
[18] 樊自立,马英杰,张宏,等.塔里木河流域生态地下水位及其合理深度确定[J].干旱区地理,2004,27(1):8-13.
[19] 徐海量,宋郁东,陈亚宁.生态输水后塔里木河下游合理水位探讨[J].水土保持通报,2003,23(5):22-25.
[20] 陈亚宁,王强,李卫红,等.植被生理生态学数据表征的合理地下水位研究:以塔里木河下游生态恢复过程为例[J].科学通报,2006,51(S1):7-13.
[21] 王永斌,努尔巴依·阿布都沙力克, Thevs N.胡杨(Populus euphratica Oliv.)根繁殖特征[J].生态学杂志,2007,26(12):1937-1941.
备注/Memo
收稿日期:2015-12-25;改回日期:2016-01-18。
基金项目:国家自然科学基金（31370551，41461045，31400466）；自治区研究生科研创新项目（XJGRI2015090）
作者简介:王敏(1990-),女,四川内江人,硕士研究生,研究方向为恢复生态学。E-mail:wangm199@126.com
通讯作者:徐海量(1971-),男,江苏宝应人,研究员,博士,主要从事干旱区恢复生态和生态水文学研究。E-mail:xuhl@ms.xjb.ac.cn