准噶尔东南缘梭梭幼苗生境生态因子及其生长

doi:10.6048/j.issn.1001-4330.2019.08.018

新疆农业科学 ›› 2019, Vol. 56 ›› Issue (8): 1527-1534.DOI: 10.6048/j.issn.1001-4330.2019.08.018

• 土壤肥料·微生物·植物保护·畜牧兽医·信息技术 • 上一篇下一篇

准噶尔东南缘梭梭幼苗生境生态因子及其生长

粟玲^1,2, 王泽^1,2, 罗艳丽^1,2, 麻浩^1,2,3, 任财^1,2, 张玲卫^1,2, 仝伯凯^1,2

1.新疆农业大学干旱区荒漠研究所,乌鲁木齐 830052;
2.新疆农业大学草业与环境科学学院/新疆土壤与植物生态过程实验室,乌鲁木齐 830052;
3.南京农业大学农学院,南京 210095

收稿日期:2019-05-26 出版日期:2019-08-20 发布日期:2019-10-10
通信作者: 麻浩(1965-),男,湖南花垣人,教授,研究方向为荒漠生态恢复与重建,(E-mail)lq-ncsi@njau.edu.cn
作者简介:粟玲(1995-),女,新疆乌鲁木齐人,硕士研究生,研究方向为生态环境保护与饲草学,(E-mail)1904846496@qq.com
基金资助:
自治区区域协同创新专项(科技援疆计划)“荒漠生态恢复与重建”(2017E0237);国家自然科学基金(31800384)

Studyon Eco-environmental Factors and Growth of Seedlings Habitats of Haloxylon ammodendron in the Southeastern Margin of Junggar Basin

SU Ling^1,2, WANG Ze^1,2, LUO Yan-li^1,2, MA Hao^1,2,3, REN Cai^1,2, ZHANG Ling-wei^1,2, TONG Bo-kai^1,2

1.Institute of Desert Research in the Arid Areas, Xinjiang Agricultural University, Urumqi 830052, China;
2. Xinjiang Key Laboratory of Soil and Plant Ecological Processes / College of Pratacultural and Environmental Sciences,Xinjiang Agricultural University, Urumqi 830052, China;
3. College of Agriculture, Nanjing Agricultural University, Nanjing 210095, China

Received:2019-05-26 Online:2019-08-20 Published:2019-10-10
Correspondence author: MA Hao (1965-), male, native place; Huanyuan, Hunan, Professor, research field: Restoration and reconstruction of desert ecosystem,(E-mail)lq-ncsi@njau.edu.cn
Supported by:
Supported by: Innovation Program of Regional Cooperation of Xinjiang (Science and Technology Supporting Xinjiang Program) "Desert Ecosystem Restoration and Reconstruction"(2017E0237);The National Natural Science Foundation of China(31800384)

摘要/Abstract

摘要： 【目的】研究准噶尔东南缘荒漠梭梭幼苗生境区的生态环境因子及幼苗个体生长生理特征,分析幼苗对生境条件变化的适应状况,为梭梭天然林的生态保育提供科学依据。【方法】采用野外监测和室内分析相结合的方法,研究不同生境区光照强度、土壤温度和土壤水分等生态因子对幼苗个体生长生理特征与差异。【结果】(1)生长季生境区A与B的地表光照强度呈先升高后降低趋势,最大值出现在7月,分别为78 500 lx和82 000 lx,而地表最高温度出现在8月,分别为46.28和47.60℃,且随着土层深度的增加呈持续降低趋势。(2)土壤表层水分匮乏期为7和8月,其土壤水分含量范围分别为0～1.88%和0～1.72%,且随着土层深度的增加呈持续升高趋势。(3)生境区A与B幼苗的株高和地径呈递增的变化趋势,而冠幅和梢长呈先增加后降低再增加的变化趋势。(4)在极端干旱的7~8月,幼苗同化枝叶绿素SPAD值分别由18.37和16.05下降到9.27和10.03。【结论】幼苗生境区的生态因子变化具有明显的季节性,生长季生境区A与B的地表光照强度、表层土壤温度和土壤水分状况均有利于梭梭幼苗的生长,但生境区A的幼苗生长状况要优于生境区B。

关键词: 梭梭幼苗; 光照强度; 土壤温度; 土壤水分; 生长生理

Abstract: 【Objective】 The characteristics of eco-environmental factors, individual growth and physiological under seedlings habitats of Haloxylon ammodendron in the southeastern margin of Junggar Basin were explored and the adaptation of seedlings to habitat conditions was analyzed comprehensively in the hope of providing provide a scientific basis for the ecological conservation of the plant. 【Method】The characteristics and differences of light intensities, soil temperature, soil moisture, individual growth and physiological under different seedlings habitats were researched by the method of field monitoring and laboratory analysis. 【Result】 (1) The trend of surface light intensities rose first and then decreased under seedlings habitats of A and B in the growing season, and the crest value appeared in July, which was 78,500 lx and 82,000 lx, respectively, while, the highest soil surface temperature appeared in August, which was 46.28℃ and 47.60℃, respectively, and continued to decrease with the increase of soil depth. (2) The scarcity period of soil water was July and August, and the soil moisture content ranged from 0 to 1.88% and 0 to 1.72%, respectively, and continued to increase with the increase of soil depth. (3) The plant seedling height and ground diameter in the habitat area A and B showed an increasing trend, while the crown width and shoot length increased at first and then decreased and then increased. (4) From the extremely drought July to August, the chlorophyll SPAD values of assimilation branches decreased from 18.37 and 16.05 to 9.27 and 10.03, respectively.【Conclusion】The variation of ecological factors in seedling habitat area has obvious seasonality. The surface light intensity, surface soil temperature and soil moisture status of growth season area A and B were beneficial to the growth of H. ammodendron seedlings, but the seedling growth status of habitat area A was better than that of habitat area B.

Key words: Haloxylon ammodendron seedlings; light intensities; soil temperature; soil moisture; growth physiology

中图分类号:

S717

粟玲, 王泽, 罗艳丽, 麻浩, 任财, 张玲卫, 仝伯凯. 准噶尔东南缘梭梭幼苗生境生态因子及其生长[J]. 新疆农业科学, 2019, 56(8): 1527-1534.

SU Ling, WANG Ze, LUO Yan-li, MA Hao, REN Cai, ZHANG Ling-wei, TONG Bo-kai. Studyon Eco-environmental Factors and Growth of Seedlings Habitats of Haloxylon ammodendron in the Southeastern Margin of Junggar Basin[J]. Xinjiang Agricultural Sciences, 2019, 56(8): 1527-1534.

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准噶尔东南缘梭梭幼苗生境生态因子及其生长

Studyon Eco-environmental Factors and Growth of Seedlings Habitats of Haloxylon ammodendron in the Southeastern Margin of Junggar Basin

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