本文選題：草地分類　切入點：氣候特征　出處：《科學(xué)技術(shù)與工程》2017年24期

【摘要】：氣候變化對草地類型的分布有著決定性的影響,量化分析其影響程度有著重要的意義。將內(nèi)蒙古全區(qū)草地劃分為優(yōu)質(zhì)草地、中質(zhì)草地、劣質(zhì)草地和高產(chǎn)草地、中產(chǎn)草地、低產(chǎn)草地;基于內(nèi)蒙古全區(qū)23個中國地面國際交換站氣象資料(1957~2014年),采用Mann-Kendall法對上述兩套分類方案的各類草地的年降水量和平均氣溫進行趨勢分析和突變性檢驗。結(jié)果表明:優(yōu)質(zhì)、中質(zhì)、高產(chǎn)、中產(chǎn)草地年降水量呈減少趨勢,劣質(zhì)和低產(chǎn)草地年降水量呈增加趨勢;各類草地平均氣溫均呈增加趨勢。劣質(zhì)和低產(chǎn)草地年降水量的離散程度以及優(yōu)質(zhì)和高產(chǎn)草地平均氣溫的離散程度較其他草地更大,各類草地的年降水量和平均氣溫在研究時期內(nèi)均發(fā)生突變,不同類型草地的降水量和氣溫有不同程度的差別。
[Abstract]:Climate change has a decisive effect on the distribution of grassland types, and it is of great significance to quantitatively analyze the degree of influence. The grassland in Inner Mongolia is divided into high quality grassland, middle quality grassland, inferior grassland, high yield grassland and middle yield grassland. Low yield grassland; Based on the meteorological data of 23 China ground international exchange stations in Inner Mongolia from 1957 to 2014, the trend analysis and abrupt change test of the annual precipitation and mean temperature of all kinds of grassland in the above two sets of classification schemes were carried out by using Mann-Kendall method. The results showed that the quality of grassland was high quality and medium quality. The annual precipitation of high yield and middle yield grassland showed a decreasing trend, while the annual precipitation of inferior and low yield grassland showed an increasing trend. The average temperature of all kinds of grassland showed an increasing trend. The dispersion degree of annual precipitation and the average temperature of good quality and high yield grassland were larger than those of other grasslands. The annual precipitation and mean temperature of all kinds of grasslands were abrupt in the period of study, and the precipitation and temperature of different types of grassland were different in different degrees.
【作者單位】： 中國水利水電科學(xué)研究院牧區(qū)水利科學(xué)研究所;
【基金】：中國水利水電科學(xué)研究院科研專項(MK2016J08) 水利部公益型項目(201401003)資助
【分類號】：P467;S812

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