Effect of Long-Term Fertilization on Soil Enzyme Activities Under Different Hydrothermal Conditions in Northeast China
Effect of Long-Term Fertilization on Soil Enzyme Activities Under Different Hydrothermal Conditions in Northeast China
复制标题
东北不同水热条件下长期施肥对土壤酶活性的影响
DOI：
10.1016/s1671-2927(11)60020-5
复制
发表时间：
2011-03-20
影响因子：
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通讯作者：
Sui Yu-yu
中科院分区：
文献类型：
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作者：
Jiao Xiao-guang;Gao Chong-sheng;Sui Yu-yu
人类活动导致温室气体增加，从而改变了天气模式。已经研究了气候变化的影响，包括对世界各地一些生态系统的影响。关于气候变化引起的土壤变化的研究很多，但大多没有扩展到结合土壤微生物状况和土壤物理化学条件信息的土壤酶研究。同时，已经建立了大量的试验田来研究长期施肥对土壤酶活性的影响，但许多试验田没有比较土壤酶活性的差异，也没有分析不同水热条件下长期施肥对土壤酶活性的影响。本研究比较了中国东北地区三个不同水热条件下长期定位施肥站的土壤酶活性，分析了水热条件、土壤化学性质与土壤酶活性的关系。在长期的施肥试验过程中，水热条件(年温度和总降雨量)按公主岭(吉林省中国)、哈尔滨(黑龙江省中国)和黑河(黑龙江省中国)的顺序递减。日照时数以公主岭最长，黑河次之，哈尔滨最少。然而，土壤酶的顺序与水热条件不一致。总体而言，三个站点之间相同处理的土壤酶在2008年和2009年的顺序是一致的。相关分析表明，在不同施肥处理下，不同土壤酶受气候因素的影响程度不同。不施肥(CK)处理的尿素酶活性与日照时数呈显著正相关(R=-0.91，P
Human activities have altered weather patterns by causing an increase in greenhouse gas. The effects of climate change have been studied, including effects on some ecosystems throughout the world. There are many studies on changes in the soil due to climate change, but much of them did not extend their research to soil enzyme that integrates information on soil microbial status and soil physical-chemical conditions. Meanwhile, there are lots of experimental fields established to study effects of long-term fertilization on soil enzyme activities, but many did not compare the difference of soil enzyme activities and did not analyze the effect of climatic factors on soil enzyme activities with long-term fertilization under different hydrothermal conditions. In this study, we compared soil enzyme activities of three long-fertilization stations which had different hydrothermal conditions in Northeast China, and analyzed the relationship of hydrothermal condition, soil chemical properties with soil enzyme activities. Hydrothermal conditions (annual temperature and total rainfall) decreased in order of Gongzhuling (Jilin Province, China) > Harbin (Heilongjiang Province, China) > Heihe (Heilongjiang Province, China) over the course of the long-term fertilization experiment. Sunshine hours showed the longest in Gongzhuling, the second in Heihe, and the last in Harbin. However, the order of soil enzymes was not in agreement with hydrothermal conditions. Overall, the order of soil enzymes for the same treatment among three stations was consistent in 2008 with in 2009. Correlation analysis demonstrated that different soil enzymes achieved the different affected levels by climatic factors under different fertilization treatments. Urease activity showed a significant relationship with sunshine hours in no fertilizer (CK) treatment (R=-0.91, P