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当前位置: 首页 > 文章 > 宁夏干旱风沙区不同密度人工柠条林营建对土壤环境质量的影响 西北农业学报 2012,21 (12) 153-157
Position: Home > Articles > Impact of Different Densities of Artificial Caragana intermedia Forest on Soil Environmental Quality in Arid Windy Desert in Ningxia Acta Agriculturae Boreali-occidentalis Sinica 2012,21 (12) 153-157

宁夏干旱风沙区不同密度人工柠条林营建对土壤环境质量的影响

作  者：
王占军;蒋齐;潘占兵;何建龙;舒维花
单  位：
宁夏农林科学院荒漠化治理研究所
关键词：
干旱风沙区;人工柠条林;土壤贮水量;土壤肥力
摘  要：
以宁夏干旱风沙区人工柠条灌木林为研究对象,对退化沙地(对照)和种植不同密度柠条林的土壤环境质量及草地生产力进行研究。结果表明,不同密度柠条林对土壤贮水量的影响为0.166 5万/hm2柠条林>0.249 0万/hm2柠条林>退化沙地>0.333 0万/hm2柠条林。营造人工柠条林能明显改善退化沙地20cm以下土层土壤体积质量、总孔隙度。适宜的造林密度能够改善土壤有机质、全氮含量。柠条林间草地地上生物量,以0.166 5万/hm2柠条草地最高,显著高于其他密度林地和退化沙地(对照)(P<0.05);其次是0.249 0万/hm2柠条林地。综合评价,低密度柠条林对水分含量有较大的改善效果,而高密度柠条林可造成土壤的旱化,在退化沙地改良中,营造0.249 0和0.166 5万/hm2密度的柠条林能充分利用天然降水,获得较高的生物产量。
译  名：
Impact of Different Densities of Artificial Caragana intermedia Forest on Soil Environmental Quality in Arid Windy Desert in Ningxia
作  者：
WANG Zhanjun1,JIANG Qi1,PAN Zhanbing1,HE Jianlong1 and SHU Weihua1,2(1.Institute of Desertification Control,Ningxia Academy of Agriculture and Forestry Sciences,Yinchuan 750002,China; 2.Key Laboratory for Restoration and Reconstruction of Degraded Ecosystem in Northwestern China of the Ministry of Education,Ningxia University,Yinchuan 750021,China)
关键词：
Arid windy desert;Artificial Caragana intermedia forest;Soil water storage;Soil fertility
摘  要：
This study took artificial forest of Caragana intermedia as object to investigated the soil environmental quality and productivity of pasture in degraded desert(control) and forest of Caragana intermedia with different densities.The results showed that the order of soil water storage affected by different densities of Caragana intermedia forest was:1.665 thousand clusters/hm2 of Caragana intermedia forest >2.490 thousand/hm2 of Caragana intermedia forest>degraded desert>3.330 thousand/hm2 of Caragana intermedia forest.Planting Caragana intermedia forest could obviously improve the soil bulk density and total porosity below 20 cm layers of degraded desert.Forest of appropriate planting density could improve soil organic matter and total N content.The Caragana intermedia forest with the density of 1.665 thousand/hm2 had the highest biomass of grasses,which was significantly higher than that in Caragana intermedia forest with other densities and degraded desert.Caragana intermedia forest with the density of 2.940 thousand/hm2 had the second highest biomass of grasses.The comprehensive evaluation indicated that Caragana intermedia forest with a low density had better improve effects for soil water conservation,but Caragana intermedia forest with a high density would led to drought of soil.In the improvement of degraded desert,Caragana intermedia forest with densities of 2.940 and 1.665 thousand/hm2 could use natural rainfall sufficiently and resulted in higher biomass yield.

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