| 川西米亚罗亚高山暗针叶林土壤pH和养分空间异质性分析 |
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| 引用本文： | 熊凯,赵玉娟,陈健,张运,赵广东,杨洪国,史作民,许格希.川西米亚罗亚高山暗针叶林土壤pH和养分空间异质性分析[J].北京林业大学学报,2022,44(2):55-64. |
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| 作者姓名： | 熊凯 赵玉娟 陈健 张运 赵广东 杨洪国 史作民 许格希 |
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| 作者单位： | 1.中国林业科学研究院森林生态环境与自然保护研究所，国家林业和草原局森林生态环境重点实验室，北京 100091 |
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| 基金项目： | 中央级公益性科研院所基本科研业务费专项（CAFYBB2016MA004、CAFZC2017M004）； |
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| 摘 要： | 目的]对川西米亚罗亚高山暗针叶林土壤pH和养分空间异质性进行研究,可为深入了解川西亚高山林区土壤质量以及区域生态恢复提供科学依据.方法]依托在四川米亚罗省级自然保护区建立的亚高山暗针叶林9.6 hm2(400m×240 m)动态样地,采用野外布点采样、实验室测定、经典统计学、地统计学分析相结合的方法,分析了动态样地...
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| 关 键 词： | 亚高山 暗针叶林 地统计学 土壤pH 土壤养分 空间异质性 |
| 收稿时间： | 2020-12-31 |
Spatial heterogeneity of soil pH and nutrients in Miyaluo Subalpine dark coniferous forest of western Sichuan,southwestern China |
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| Xiong Kai,Zhao Yujuan,Chen Jian,Zhang Yun,Zhao Guangdong,Yang Hongguo,Shi Zuomin,Xu Gexi.Spatial heterogeneity of soil pH and nutrients in Miyaluo Subalpine dark coniferous forest of western Sichuan,southwestern China[J].Journal of Beijing Forestry University,2022,44(2):55-64. |
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| Authors: | Xiong Kai Zhao Yujuan Chen Jian Zhang Yun Zhao Guangdong Yang Hongguo Shi Zuomin Xu Gexi |
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| Institution: | (Key Laboratory of Forest Ecology and Environment of National Forestry and Grassland Administration,Institute of Forest Ecology,Environment and Nature Conservation,Chinese Academy of Forestry,Beijing 100091,China;Miyaluo Research Station of Alpine Forest Ecosystem,Lixian 623100,Sichuan,China;Institute of Ecological Protection and Restoration,Chinese Academy of Forestry,Beijing 100091,China;Co-Innovation Center for Sustainable Forestry in Southern China,Nanjing Forestry University,Nanjing 210037,Jiangsu,China) |
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| Abstract: | Objective]The spatial heterogeneity of soil pH and nutrients in Miyaluo subalpine dark coniferous forest of western Sichuan,southwestern China was studied,and the study results can provide scientific basis for further understanding soil quality and regional ecological restoration in the subalpine forest of western Sichuan,southwestern China.Method]The experimental site was in 9.6 ha(400 m×240 m)Miyaluo subalpine dark coniferous forest dynamic plot of western Sichuan.By combining field sampling,laboratory measurement,classical statistics and geostatistical analysis,we analyzed the spatial heterogeneity of 0-10 cm surface soil pH and nutrients,including soil organic carbon(SOC),total nitrogen(TN),total phosphorus(TP),total potassium(TK),ammonium nitrogen(AN),nitrate nitrogen(NN)and available phosphorus(AP),in the subalpine dark coniferous forest.Result](1)The mean pH of the soil was 4.85.The mean contents of SOC,TN,TP and TK were 50.05,3.40,0.53 and 24.97 g/kg,respectively and the mean contents of AN,NN and AP were 11.44,2.24 and 8.12 mg/kg,respectively;(2)pH was lower in the western portion.SOC,TN,TP and AN were generally abundant in the eastern portion of the dynamic plot.TK was abundant in a north-south strip pattern,and the distribution pattern of AN and NN was patchy;(3)the coefficient of variation(CV)of all soil properties ranged from 11%to 86%,the CV of soil pH was11%,and that of NN and AP both was 86%.The nugget-sill ratio of soil properties ranged from 0.11 to 0.50,and NN and AP showed a strong spatial autocorrelation,whereas other soil properties showed a moderate spatial autocorrelation;(4)except for pH and TN,pH and TK,SOC and AN,TN and AP,TP and TK,TP and NN,TP and AP,the partial correlation coefficient between the other 21 pairs of soil properties reached a significant level(P<0.05)or extremely significant level(P<0.01).Conclusion]The soil in Miyaluo subalpine dark coniferous forest of western Sichuan is acidic and the nutrient content in the soil is relatively high.The spatial distribution of soil properties shows obvious spatial autocorrelation.The soil properties are generally interrelated with each other.SOC is the most representative of the 8 comprehensive variations of soil properties studied in this paper. |
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| Keywords: | subalpine dark coniferous forest geostatistics soil pH soil nutrient spatial heterogeneity |
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