中国水土保持科学2017，Vol.15Issue(3)：65-73,9.DOI:10.16843/j.sswc.2017.03.009
长三角区典型林分浅层土壤温度变化特征
Variation characteristics of shallow-soil temperature under typical stands in the Yangtze River Delta
摘要
Abstract
[Background]The soil temperature directly determines the quality of soil resources,and affects plant's growth,development,reproduction and distribution.As the largest economic developed area in China,the hot summer in the Yangtze River Delta demands high requirements for the rational allocation of artificial vegetation communities.This work aims to understand the changes of temperature of shallow-soil under typical stands in the Yangtze River Delta,and to reveal the effects of forest on regulating temperature of shallow-soil.[Methods] The soil temperature sensor EMS0 was used to conduct long-term monitoring,from June 2012 to May 2013,on temperature of shallow-soil (5 cm,10 cm,and 15 cm) of Quercus acutissima stand,Phyllostachys edulis stand and Cunninghamia lanceolata stand in Tongshan of Nanjing.With nudaton as the control,the temperature variation characteristics of shallow-soil under three stands were analyzed by Microsoft Excel 2007,Origin 8.5,SPSS 19.0 and LSD.[Results] The diurnal variation and annual variation of soil temperature under forest was smaller than that in nudation.The diurnal range of soil temperature was in descending order of nudation,C.lanceolata stand,P.edulis stand and Q.acutissima stand and the annual variation range was in descending order of nudation,C.lanceolata stand,Q.acutissima stand and P.edulis stand.The forest presented the effect of decreasing the soil temperature in summer and autumn,moreover,P.edulis stand (about 1-3 ℃) showed the best effect of reducing soil temperature.The forest had the function of increasing soil temperature in winter and spring,moreover,C.lanceolata stand (about 0.1-1 ℃) showed the strongest effect of increasing soil temperature.The forest caused the decrease of the annual average temperature,and P.edulis stand decreased the annual average temperature about 1-2 ℃,C.lanceolata stand and Q.acutissima stand about 0.5-1.5 ℃,respectively.The forest lagged the time of the daily maximum and minimum temperature of soil,and the lagging effect was descending in order of C.lanceolata stand,P.edulis stand and Q.acutissima stand.The highest temperature of soil temperature was lowered by forest and the lowest temperature of soil temperature rose in spring and winter.The effect of reducing daily highest temperature of soil temperature was the most significant under Q.acutissima stand.In the spring and winter,Q.acutissima stand and C.lanceolata acted as the best role in increasing daily lowest soil temperature.[Conclusions] The diurnal range and annual range of soil temperature under both Q.acutissima stand and P.edulis stand was smaller than that under C.lanceolata stand.For the ability of reducing soil temperature in summer and autumn and raising the temperature in winter and spring,the P.edulis stand was better than Q.acutissima stand and C.lanceolata stand.For the ability of lagging the time of the maximum and minimum temperature of soil,the C.lanceolata stand was better than P.edulis stand and Q.acutissima stand.For the ability of reducing the maximum temperature of soil and raising the lowest temperature of soil,Q.acutissima stand was better than P.edulis stand and C.lanceolata stand.This conclusion can provide reference for soil environment protection and tree species selection.关键词
土壤温度/浅层土壤/麻栎林/毛竹林/杉木林Key words
soil temperature/shallow-soil/Quercus acutissima stand/Phyllostachys edulis stand/Cunninghamia lanceolata stand分类
农业科技引用本文复制引用
杨丹,孙永涛,庄家尧,张金池,葛波,凡国华..长三角区典型林分浅层土壤温度变化特征[J].中国水土保持科学,2017,15(3):65-73,9.基金项目
江苏省高校自然科学研究重大项目“基于水量平衡的南京城郊植被水源涵养机制研究项目”(16KJA220003) （16KJA220003）
