碳中和分类(2)
气候变化(2)
在“碳中和文献”中,命中:2条,耗时:小于0.01 秒
1.气候变化背景下东北水稻的时空分布特征
机构:中国农业科学院农业资源与农业区划研究所/农业部农业信息技术重点实验室;中山大学地理科学与规划学院;国际食物政策研究所;
关键词:水稻;;作物空间分配模型;;空间响应;;气候变化;;东北地区
摘要:以受气候变化影响显著的中国东北地区(黑龙江、吉林和辽宁)为研究区域,以水稻为研究对象,利用1980—2010年东北三省分县水稻播种面积、水田分布以及水稻气候适宜性分布等多源数据,结合作物空间分配模型(SPAM),在5'×5'的像元尺度上模拟了东北地区水稻时空变化过程,结合气温、降水等气候因子的空间分异,重点分析了水稻分布在不同积温与降水区间的时空变化特征.结果表明:水稻分布的核心纬度由北纬39°—46°推移至41°—47°,经度则由122°—127°向东推移至131°,同时还呈现向200 m以上的较高海拔地区扩展的趋势;区域内积温带均向北偏移,新增的水稻面积主要集中在2800~3400℃·d的积温区间;研究期间区域内降水量2000年以前呈增加趋势,之后下降,水稻面积变化则主要发生于300~600 mm的降水区间内.
年:2016
出版单位:应用生态学报
2.中国东北玉米空间分布对气候变化的响应,1980–2010(英文)
机构:Chinese Academy of Agricultural Sciences,Key Laboratory of Agri-informatics,Ministry of Agriculture/Institute of Agricultural Resources and Regional Planning;Hunan Academy of Agricultural Sciences,Institute of Agricultural Economics and Regional Planning;Sun Yat-sen University,School of Geography and Planning;
摘要:Based on county-level crop statistics and other ancillary information,spatial distribution of maize in the major maize-growing areas(latitudes 39°–48°N) was modelled for the period 1980–2010 by using a cross-entropy-based spatial allocation model.Maize extended as far north as the northern part of the Lesser Khingan Mountains during the period,and the area sown to maize increased by about 5 million ha.More than half of the increase occurred before 2000,and more than 80% of it in the climate transitional zone,where the annual accumulated temperature(AAT) was 2800–3400 °C·d.Regions with AAT of 3800–4000 °C·d became more important,accounting for more than 25% of the increase after 2000.The expansion of maize was thus closely related to warming,although some variation in the distribution was noticed across zones in relation to the warming,indicating that maize in northeast China may have adapted successfully to the warming by adjusting its spatial distribution to match the changed climate.
年:2016
出版单位:Journal of Geographical Sciences
1
按检索点细分(2)
作者(2)
按资源类型细分(2)
期刊论文(2)
按来源细分(2)
知网(2)
按年细分(2)
2016年(2)