地理研究 ›› 2015, Vol. 34 ›› Issue (7): 1222-1234.doi: 10.11821/dlyj201507003
戴尔阜1,2(), 李双元3, 吴卓1,2,4, 闫浩文3, 赵东升1,2
收稿日期:
2015-01-21
修回日期:
2015-05-05
出版日期:
2015-08-19
发布日期:
2015-08-08
作者简介:
作者简介:戴尔阜(1972- ),男,甘肃静宁人,博士,研究员,博士生导师,主要研究方向为自然地理综合研究、气候变化及其区域响应、土地利用变化模拟。E-mail:
基金资助:
Erfu DAI1,2(), Shuangyuan LI3, Zhuo WU1,2,4, Haowen YAN3, Dongsheng ZHAO1,2
Received:
2015-01-21
Revised:
2015-05-05
Online:
2015-08-19
Published:
2015-08-08
摘要:
植被净初级生产力(NPP)对气候变化的响应研究是全球变化研究的核心内容之一。在区域尺度上研究NPP年际间的空间变化规律,探究气候因子与植被生长的关系,是应对气候变化区域响应、探讨区域生态过程的科学基础。基于SPOT VEGETATION NDVI 植被指数数据、气候和植被分类数据,利用光能利用率模型(CASA)估算了中国南方红壤丘陵区泰和县1998-2012年植被NPP,分析了NPP时空分布特征及其与气候因子的相关性。结果表明:① 1998-2012年泰和县植被年均NPP为762 g C/m2·a,不同植被类型差异明显,空间上表现出东西高、中间低的分布特征;② 1998-2012年泰和县植被NPP总体呈增长趋势,年际波动较大,平均值为2.21×106 g C/a;③ 研究区NPP与年降水量呈不显著正相关关系,与年均气温呈显著负相关关系,表明温度是影响该地区植被NPP的主要气候因子。
戴尔阜, 李双元, 吴卓, 闫浩文, 赵东升. 中国南方红壤丘陵区植被净初级生产力空间分布及其与气候因子的关系——以江西省泰和县为例[J]. 地理研究, 2015, 34(7): 1222-1234.
Erfu DAI, Shuangyuan LI, Zhuo WU, Haowen YAN, Dongsheng ZHAO. Spatial pattern of net primary productivity and its relationship with climatic factors in Hilly Red Soil Region of southern China: A case study in Taihe county, Jiangxi province[J]. GEOGRAPHICAL RESEARCH, 2015, 34(7): 1222-1234.
表2
不同植被类型年均NPP与降水量和年均温的平均相关系数"
Rp | Rt | |
---|---|---|
人工湿地松林 | -0.027 | -0.3486 |
天然马尾松林 | -0.0156 | -0.3305 |
杉木林 | 0.0436 | -0.2945 |
天然针叶混交林 | -0.0414 | -0.4211 |
人工落叶阔叶林 | 0.0239 | -0.3113 |
天然落叶阔叶林 | -0.0495 | -0.2812 |
人工常绿阔叶林 | 0.1536 | -0.4587 |
天然常绿阔叶林 | 0.0167 | -0.2696 |
天然阔叶混交林 | -0.0584 | -0.1144 |
人工针阔混交林 | -0.1477 | -0.7316 |
天然针阔混交林 | 0.0167 | -0.1944 |
天然竹林 | 0.0021 | -0.2815 |
经济林 | -0.0621 | -0.1838 |
其他土地 | -0.1123 | -0.2883 |
农地 | -0.0141 | -0.3546 |
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