毛乌素沙地土壤水分对中国沙棘人工林稳定性及生产力的影响  

Influence of Soil Physico-chemical Properties in Maowusu Sandland on the Stability and Productivity of Hippophae rhamnoides subsp. sinensis Plantation

作　　者：曾诚[1] 陈贝贝[1] 肖智勇[2] 李甜江[3] 李孙玲[3] 代光辉[4] 李根前[1] 

机构地区：[1]西南林业大学,昆明650224 [2]江西省宜春市林业科学研究所,江西宜春336000 [3]云南省林业科学研究院,昆明650204 [4]北京林业大学,北京100083

出　　处：《林业资源管理》2016年第1期99-104,共6页Forest Resources Management

基　　金：国家自然科学基金项目(31070551/31570609)

摘　　要：为了解土壤水分对中国沙棘稳定性及生产力的影响,对毛乌素沙地平地与洼地人工林的相应特征进行比较分析,以期为毛乌素沙地造林设计与立地选择提供参考依据。结果表明:洼地土壤的含水率、全P及全K含量均显著高于平地,但土壤含水率对种群特征的形成起着主导作用;洼地的树高生长量、林分生产力、子株数量显著高于平地,且其种群年龄结构属于增长型(或稳定型),而平地的属于衰退型。由此可见:林分生产力和种群稳定性具有良好的一致性,土壤含水率高则洼地林分生产力高、种群稳定性强,土壤含水率低则林分生产力低、种群稳定性弱。In order to know the impact of soil moisture oncared in flatland and low-lying land in Maowusu sandlandthe stability and productivity, the plantations lo-were selected to do comparative analysis on cor-responding characteristics with a view to providing reference for the Maowusu Sandland afforestation de-sign and site selection. The results show that the soil moisture content, total phosphorus and total kaliumcontent of low-lying land were all significantly higher than flatland, but the soil moisture content played adominant role in the formation of the characteristics of the plantation;the tree height growth ,forestry pro-ductivity and ramet number of low-lying land were significantly higher than flatland, and its plantation agestructure belongs to a growing （or stable ） one, but the flatland belongs to declining type. Thus, forestryproductivity and plantation stability have good consistency, as the soil moisture contentis higher, the forest-ry productivity and plantation stability of low-lying land become better, as the soil moisture content is low-er, the forestry productivity and plantation stability of flatland become worse.

关 键 词：中国沙棘 林分生产力 种群稳定性 土壤含水率 种群结构 生长格局 

分 类 号：S757[农业科学—森林经理学] S718.5[农业科学—林学]