Journal of Desert Research ›› 2025, Vol. 45 ›› Issue (2): 61-70.DOI: 10.7522/j.issn.1000-694X.2024.00107
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Aokang Xu1,2(
), Tianqi Ji3(
), Jing Shi2
Received:2024-04-29
Revised:2024-11-11
Online:2025-03-20
Published:2025-03-26
Contact:
Tianqi Ji
CLC Number:
Aokang Xu, Tianqi Ji, Jing Shi. Construction and optimization of ecological network of the Heihe River Basin (Gansu section)[J]. Journal of Desert Research, 2025, 45(2): 61-70.
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URL: http://www.desert.ac.cn/EN/10.7522/j.issn.1000-694X.2024.00107
| 数据类别 | 数据格式 | 数据来源 |
|---|---|---|
| 土地利用 | 栅格,30 m×30 m | 中国科学院资源环境科学数据中心(http://wwwresdc.cn) |
| DEM | 栅格,30 m×30 m | 中国科学院资源环境科学数据中心(http://wwwresdc.cn) |
| 人口密度 | 栅格,1 000 m×1 000 m | 中国科学院资源环境科学数据中心(http://wwwresdc.cn) |
| GDP | 栅格,1 000 m×1 000 m | 中国科学院资源环境科学数据中心(http://wwwresdc.cn) |
| 土壤属性 | 栅格,1 000 m×1 000 m | 世界土壤数据库(HWSD)中国土壤数据集 |
| NDVI | 栅格,250 m×250 m | 美国地质调查局(USGS) |
| 气温、降水 | 栅格,1 000 m×1 000 m | 中国气象科学数据共享平台(http://data.cma.cn/) |
| 雪盖因子数据 | 栅格,1 000 m×1 000 m | 国家冰川冻土沙漠科学数据中心(http://wwwncdc.accn/portal/) |
| 社会经济统计数据 | 表格统计 | 《中国统计年鉴》《甘肃发展年鉴》《甘肃农村年鉴》《甘肃省水资源公报》《张掖市年鉴》 |
Table 1 Specific data sources and related descriptions
| 数据类别 | 数据格式 | 数据来源 |
|---|---|---|
| 土地利用 | 栅格,30 m×30 m | 中国科学院资源环境科学数据中心(http://wwwresdc.cn) |
| DEM | 栅格,30 m×30 m | 中国科学院资源环境科学数据中心(http://wwwresdc.cn) |
| 人口密度 | 栅格,1 000 m×1 000 m | 中国科学院资源环境科学数据中心(http://wwwresdc.cn) |
| GDP | 栅格,1 000 m×1 000 m | 中国科学院资源环境科学数据中心(http://wwwresdc.cn) |
| 土壤属性 | 栅格,1 000 m×1 000 m | 世界土壤数据库(HWSD)中国土壤数据集 |
| NDVI | 栅格,250 m×250 m | 美国地质调查局(USGS) |
| 气温、降水 | 栅格,1 000 m×1 000 m | 中国气象科学数据共享平台(http://data.cma.cn/) |
| 雪盖因子数据 | 栅格,1 000 m×1 000 m | 国家冰川冻土沙漠科学数据中心(http://wwwncdc.accn/portal/) |
| 社会经济统计数据 | 表格统计 | 《中国统计年鉴》《甘肃发展年鉴》《甘肃农村年鉴》《甘肃省水资源公报》《张掖市年鉴》 |
| 类型 | 理论依据 | 计算公式 | 变量释义 |
|---|---|---|---|
| 食物 供给 | 以归一化植被指数对农牧业产值空间化处理,农业产值以栅格NDVI值与耕地NDVI值的比分配,牧业产值以栅格NDVI值与草地NDVI值的比分配,水产品产值以栅格NDVI值与水域NDVI值的比分配,以表征各栅格的食物供给能[ | ||
| 碳固存 | 运用InVEST模型中的Carbon模块计算,土地利用类型碳密度系数根据Alam等[ | i为土地利用类型数量; | |
| 防风 固沙 | 通过植被的固沙量进行计算,裸土条件下的潜在风蚀量与植被覆盖条件下的实际风蚀量的差值[ | ||
| 产水 | 运用InVEST模型中的产水模块计算,即栅格的年降水量减去年实际蒸散量[ |
Table 2 Ecosystem services assessment
| 类型 | 理论依据 | 计算公式 | 变量释义 |
|---|---|---|---|
| 食物 供给 | 以归一化植被指数对农牧业产值空间化处理,农业产值以栅格NDVI值与耕地NDVI值的比分配,牧业产值以栅格NDVI值与草地NDVI值的比分配,水产品产值以栅格NDVI值与水域NDVI值的比分配,以表征各栅格的食物供给能[ | ||
| 碳固存 | 运用InVEST模型中的Carbon模块计算,土地利用类型碳密度系数根据Alam等[ | i为土地利用类型数量; | |
| 防风 固沙 | 通过植被的固沙量进行计算,裸土条件下的潜在风蚀量与植被覆盖条件下的实际风蚀量的差值[ | ||
| 产水 | 运用InVEST模型中的产水模块计算,即栅格的年降水量减去年实际蒸散量[ |
| 威胁源 | 权重 | 敏感水平 | 最大威胁 距离 | 衰减 类型 | |||
|---|---|---|---|---|---|---|---|
| 耕地 | 林地 | 草地 | 水域 | ||||
| 建设用地 | 1.0 | 0.50 | 0.70 | 0.65 | 0.70 | 8 | 指数 |
| 公路 | 0.8 | 0.30 | 0.20 | 0.35 | 0.40 | 5 | 指数 |
| 铁路 | 0.6 | 0.25 | 0.20 | 0.35 | 0.45 | 3 | 指数 |
| 未利用地 | 0.3 | 0.25 | 0.30 | 0.40 | 0.20 | 3 | 线性 |
| 耕地 | 0.2 | 0.20 | 0.40 | 0.45 | 0.50 | 1 | 线性 |
Table 3 Threat source data for different habitat types
| 威胁源 | 权重 | 敏感水平 | 最大威胁 距离 | 衰减 类型 | |||
|---|---|---|---|---|---|---|---|
| 耕地 | 林地 | 草地 | 水域 | ||||
| 建设用地 | 1.0 | 0.50 | 0.70 | 0.65 | 0.70 | 8 | 指数 |
| 公路 | 0.8 | 0.30 | 0.20 | 0.35 | 0.40 | 5 | 指数 |
| 铁路 | 0.6 | 0.25 | 0.20 | 0.35 | 0.45 | 3 | 指数 |
| 未利用地 | 0.3 | 0.25 | 0.30 | 0.40 | 0.20 | 3 | 线性 |
| 耕地 | 0.2 | 0.20 | 0.40 | 0.45 | 0.50 | 1 | 线性 |
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