Spatial Analysis · T0-1

Catchment Study

Travel-time catchments and the population inside them.

Dayun Tiandi · Longgang · Shenzhen 100 m population grid · 1 km age-gender structure Oval_Adam October 2026

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空间分析 · T0-1

CATCHMENT STUDY

等时圈研究

以 15 / 30 / 45 分钟车程为界,读出场地可触达的人群规模与结构。

深圳 · 龙岗 · 大运天地 100 m 人口格网 · 1 km 年龄‑性别结构 Oval_Adam 2026 年 10 月

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At a glance

What the catchment holds

SummaryThe population is dense, majority-male and working-age at every scale. As the catchment widens from 15 to 45 minutes, the profile barely changes — only the size of the pool does: 0.7 M → 5 M → 12.35 M people.

12.35 Mpeople within the 45-min catchment · 1,874 km²

4.96 Mwithin the 30-min catchment · 542 km²

0.71 Mwithin the 15-min catchment · 60 km²

55.3%male share · median age 34.5

By catchment

Catchment	Area (km²)	Population	Male share	Median age
15 min	59.9	714,496	55.3%	34.4
30 min	541.6	4,964,573	55.1%	34.7
45 min	1,874.0	12,315,121	55.3%	34.6

The three catchments nest within one another, so the differences are a matter of scale rather than of profile.

关键数字

等时圈里有什么

小结人口在每一个尺度上都表现为「稠密、男性偏多、劳动年龄为主」。等时圈由 15 分钟扩大到 45 分钟,结构几乎不变,变的只是人口体量:70 万 → 500 万 → 1,235 万。

12.35 M45 分钟等时圈内人口 · 1,874 km²

4.96 M30 分钟等时圈内 · 542 km²

0.71 M15 分钟等时圈内 · 60 km²

55.3%男性占比 · 中位年龄 34.5

分圈层

等时圈	面积(km²)	人口	男性占比	中位年龄
15 分钟	59.9	714,496	55.3%	34.4
30 分钟	541.6	4,964,573	55.1%	34.7
45 分钟	1,874.0	12,315,121	55.3%	34.6

三个等时圈层层嵌套,差异主要体现在尺度而非结构上。

Region

Population heatmap

SummaryPopulation is heavily concentrated. The great majority of the 12.35 million people in the 45-min catchment live in the continuous Shenzhen and Hong Kong urban cores; the site sits on the eastern edge of that mass, where density falls away toward the Longgang hills.

Resident population · people per 100 m cell 0360 White → red = low → high.

区域

人口热力图

小结人口高度集中。45 分钟等时圈内约 1,235 万人,绝大多数分布在深圳与香港连续的建成核心区;场地位于这一人口密集区的东缘,密度向龙岗丘陵方向迅速衰减。

常住人口 · 每 100 m 格网人数 0360 白 → 红 = 低 → 高。

Site focus

Population heatmap — site focus

SummaryThe 15-min catchment is a mid-density suburban fabric: about 714,000 people across 60 km² — roughly 11,900 per km². Density falls steadily as the catchment widens (≈9,200 per km² at 30 min, ≈6,600 at 45 min), so the site's nearest population is also its densest.

Resident population · people per 100 m cell 0360 White → red = low → high.

场地聚焦

人口热力图 — 场地聚焦

小结15 分钟等时圈属中等密度的城区外围:约 71.4 万人分布于 60 km²,约 11,900 人/km²。等时圈越大,密度越低(30 分钟约 9,200 人/km²,45 分钟约 6,600 人/km²)—— 离场地最近的圈层,也正是人口最密的圈层。

常住人口 · 每 100 m 格网人数 0360 白 → 红 = 低 → 高。

Gender

Gender ratio

SummaryThe population is consistently male-skewed — about 55% male to 45% female across the entire catchment, from the 15-min core to the 45-min span. The balance is even rather than concentrated: it is a structural feature of Shenzhen's migrant workforce, not a local anomaly.

Female share of population, Dayun Tiandi — **Female share** · 1 km age-gender grid.

Female share of population 40%60%

性别

性别比

小结人口结构稳定偏男性 —— 整个等时圈内约男性 55%、女性 45%,自 15 分钟核心到 45 分钟腹地基本一致。分布均匀,并不集中:这是深圳移民劳动力的结构性特征,而非局部异常。

女性人口占比 40%60%

Age structure

Population by age group

SummaryA working-age population. 25–44 makes up about 48% of every catchment, 65+ is under 3%, and the median age is about 34.5 — consistent from the 15-min core to the 45-min span.

Population structure by age and gender, for the 15, 30 and 45 minute catchments — **Age and gender structure.** Catchments: 15 / 30 / 45 min · share of each catchment's population.

年龄结构

人口年龄结构

小结典型的劳动年龄人口。每个等时圈内 25–44 岁约占 48%,65 岁以上不足 3%,中位年龄约 34.5 岁 —— 自 15 分钟核心到 45 分钟腹地高度一致。

各等时圈人口年龄与性别结构 — **年龄与性别结构。**等时圈:15 / 30 / 45 分钟 · 占各等时圈人口的比例。

Sources & notes

Sources and notes

Method

Catchments are travel-time isochrones at 15, 30 and 45 minutes, measured from a single site origin.
Population is read from WorldPop 2026 R2025A on a 100 m grid; a cell is counted when its centre falls inside a catchment.
Age and gender come from the WorldPop 1 km age-gender structure; female share is calculated only where population exists.

Sources

Population and age-gender: WorldPop 2026 R2025A (modelled) · CC-BY 4.0
Travel-time catchments: Mapbox driving-traffic
Basemap: OpenStreetMap contributors / CARTO
Administrative boundaries: Shenzhen and Hong Kong

Notes

Population figures are modelled estimates rather than a census count; read them as orders of magnitude.
Travel times are estimates under typical conditions, not observed journey times.

来源与说明

方法

等时圈为 15 / 30 / 45 分钟车程的等时线,自同一场地原点量取。
人口取自 WorldPop 2026 R2025A,100 m 格网;格网中心点落入等时圈内即计入。
年龄与性别取自 WorldPop 1 km 年龄‑性别结构;女性占比仅在有人口的格网内计算。

来源

人口与年龄‑性别:WorldPop 2026 R2025A(模型数据)· CC-BY 4.0
车程等时圈:Mapbox driving-traffic
底图:OpenStreetMap contributors / CARTO
行政区边界:深圳、香港

说明

人口为模型估算值,非普查数据,请按数量级理解。
车程为常规路况下的估算值,非实测通勤时间。